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Every Reel, self-hosted with its transcript. 754 videos.
Feeling Froggy?: Wood Frogs Can Freeze Solid in Winter and Thaw Back to Life
The wood frog (Lithobates sylvaticus), found across North America from the American Midwest and southern Canada to Interior Alaska, can survive with about 65-70% of its body water frozen. While frozen it shows no heartbeat, breathing or circulation. It builds up urea before winter and floods its tissues with glucose from the liver when ice starts to form; both act as cryoprotectants that limit ice formation and cell shrinkage. When temperatures rise in spring, the frog thaws, its heart starts beating again, and normal functions resume. The footage, credited to Nat Geo Animals, shows wood frogs in water and a close-up of a frog's eye.
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Did you know? Wood frogs can survive being frozen solid during winter, with their hearts stopping and as much as 65% of their body water turning to ice. Found across North America, these amphibians survive temperatures that would kill most other vertebrates by flooding their tissues with glucose and urea, which act as natural cytoprotectants. When spring arrives and temperatures rise, the ice melts, their hearts start beating again, and normal bodily functions resume. NOW YOU KNOW!
Tyler, The Creator: Tyler, The Creator Co-Founded the Collective Odd Future
Tyler, The Creator (Tyler Gregory Okonma) is an American rapper, songwriter and producer, born on March 6, 1991, in Los Angeles. He co-founded the alternative hip-hop collective Odd Future (OFWGKTA) in 2007. His debut studio album, Goblin, came out in 2011. IGOR (2019) won the Grammy Award for Best Rap Album in 2020, and Call Me If You Get Lost (2021) won the same award in 2022. His music mixes hip-hop with R&B, funk, soul and jazz. The footage shows performances and interviews, with the presenter.
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Tyler, the creator, the innovative and provocative force in music, has carved a unique path in the industry with his eclectic style and boundless creativity. DID YOU KNOW? Born Tyler Gregory Okonma on March 6th, 1991 in Los Angeles, California, he burst onto the scene as the co-founder of the alternative hip-hop collective Odd Future, challenging conventions and pushing boundaries. From his debut album, Goblin, to the critically acclaimed Igor, which won the Grammy for Best Rap Album, Tyler's work defies categorization, blending hip-hop, R&B, and funk with his unmistakable voice and daring lyrics. NOW YOU KNOW!
Dragon Drones: Drones in the War in The Ukraine Began Dropping Molten Thermite in 2024
Dragon drones are drones, typically modified first-person-view (FPV) types, that release burning thermite over positions; Ukrainian forces used them in the Russo-Ukrainian war, and they were first widely documented in 2024. Thermite burns at temperatures above 2,200 degrees Celsius, producing showers of molten metal. The footage, credited to HowThingsWork_, shows a drone dropping burning thermite over a field and buildings.
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Did you know The Ukraine's dragon drones range streams of burning metal over enemy positions? First widely documented in 2024, these weapons are typically modified first-person FPV drones, carrying an incendiary mixture called thermite. When ignited, the chemical can reach temperatures exceeding 2200 degrees Celsius. NOW YOU KNOW!
Munitions Management: Leftover Ammunition Can't Simply Be Thrown Away
Armed forces, including the U.S. military, accumulate excess, obsolete or unserviceable ammunition during long deployments. Because it can't be discarded like ordinary waste, it is handed to disposal specialists, explosive ordnance disposal technicians and ammunition specialists, who destroy it through controlled detonation or open burning. The footage, credited to Historic Vids, shows service members unpacking ammunition and a controlled detonation.
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Did you know, during lengthy military deployments, the U.S. Armed Forces can accumulate leftover ammunition that cannot simply be thrown away or left sitting. unserviceable, obsolete, or excess munitions may be sent to specialized disposal teams where explosive ordnance technicians and ammunition specialists oversee their destruction through controlled detonations or burning operations? NOW YOU KNOW!
Temperature Tiles: Shuttle Tiles Could Glow Red-Hot yet Be Held by the Edges
The Space Shuttle's thermal protection system used about 24,300 tiles, mostly silica-fiber ceramic, to shield the orbiter during reentry. The highest-temperature tiles were rated for about 1,260 degrees Celsius, and because the material is largely empty space it conducts heat so poorly that a tile glowing hot in the middle can be held at the edges moments after leaving a furnace. The footage, credited to asgardia_space, shows a tile being heated and then held by hand.
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Did you know? Spacecraft thermal protection tiles can withstand temperatures exceeding 1,260 degrees Celsius while remaining cool enough underneath to protect the vehicle structure. The space shuttle used approximately 24,300 individual tiles, made primarily from silica fibers. With each tile containing an enormous amount of microscopic empty space, that dramatically reduces heat conduction. You can even hold one in your hand. NOW YOU KNOW!
Lunavity: The University of Tokyo's Wearable Drone for Moon-Like Jumps
A University of Tokyo team built a 16-fan wearable drone that makes jumping feel like you're on the Moon.
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Did you know? The University of Tokyo's Rekimoto Lab developed Lunavity, a wearable multi-rotor system designed to augment human jumping instead of simply flying the wearer. The backpack places a cluster of drone rotors above the user, generating upward thrust that partially counteracts body weight and creates the sensation of reduced gravity.
Freeze Branding Explained: Marking Horses and Cattle With Extreme Cold
Some horses are branded with -196 °C cold instead of fire, and the hair grows back snow-white in the brand's shape.
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Did you know? Freeze branding, or cryogenic branding, uses extreme cold rather than heat to create a permanent identification mark, most commonly on cattle and horses. A copper or bronze branding iron is chilled with liquid nitrogen or dry ice and alcohol, then briefly pressed against the animal's clipped skin. Freeze branding has also crossed over from livestock identification into a niche body modification trend, with social media videos showing people deliberately using cryogenically cooled metal to create permanent marks on their skin.
Print Precision: Your Printer Fires Drops a Trillionth of a Liter in Size
An inkjet printhead fires drops measured in picoliters, trillionths of a liter. Home printers go down to about 1–1.5 pL, and some lab heads go below 1. Thermal ('bubble jet') heads flash-boil a speck of ink so that a vapor bubble kicks a drop out. Piezo heads flex a crystal to squeeze it out. Drops fly at roughly 5–15 m/s, and Epson heads can fire up to 50,000 times a second. The best industrial heads land each drop within about a micron of its target.
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DID YOU KNOW? Inkjet printing precision comes from the ability to control and place microscopic droplets of ink with extreme accuracy, often measured in picoliters and positioned within microns of their intended location. Printheads use thermal or piezoelectric actuators to eject droplets at high speeds. NOW YOU KNOW!
Starry Eyed: Some People Have Tiny Stars Floating in Their Eyes
Asteroid hyalosis fills the eye's vitreous gel with hundreds of tiny yellow-white spheres ('asteroid bodies') made of calcium, phosphate and lipids. To an eye doctor they glitter like stars in a night sky, but most people who have them never notice. It affects roughly 1 in 100–130 people, becomes far more common with age, is more common in men, and usually affects only one eye. It needs no treatment unless it hides the retina during an exam or, rarely, blurs vision.
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DID YOU KNOW? Asteroid hyalosis is an eye condition in which tiny calcium/lipid deposits called asteroid bodies, accumulate within the vitreous humor, the gel-like substance that fills the inside of the eyeball. These deposits appear as small, white or yellowish sparkling particles that float in the vitreous humor, but are usually harmless and rarely affect vision significantly. NOW YOU KNOW!
Salvadoran Salvation: El Salvador's Official Homicide Count Fell From Thousands to 114
El Salvador recorded 6,656 homicides in 2015, a rate of about 105 per 100,000 and among the highest in the world. The Attorney General's office reported 114 for 2024. Since March 2022 a state of exception has suspended some constitutional rights, and more than 83,000 people were detained by late 2024. The government credits the crackdown for the fall. Analysts say the official count now excludes some categories of deaths, and the IACHR and Amnesty International report arbitrary detentions and deaths in custody.
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DID YOU KNOW? El Salvador has recently undergone dramatic reductions in violent crime, transforming daily life across the country. In 2015, the nation recorded more than 6,000 homicides, but by 2024 that figure had fallen to 114, according to official statistics. The government launched a sweeping crackdown on criminal gangs, allowing residents to reclaim neighborhoods, parks, and public spaces. NOW YOU KNOW!
Spray Foam Fun: Two Liquids That Swell Into Insulation
Spray polyurethane foam is mixed on site from an isocyanate side (polymeric MDI) and a polyol blend containing catalysts, surfactants and fire retardants. Open-cell foam is blown mainly by water and expands about 150 times. Closed-cell foam is blown mainly by HFC-type agents and expands about 35 to 50 times, so the 'more than 100 times' claim applies only to open-cell foam. Both types seal air well. Both are combustible and usually need a thermal or ignition barrier, and installers must manage isocyanate exposure.
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DID YOU KNOW? Spray foam insulation can expand to more than 100 times its original liquid volume, filling gaps and sealing buildings against unwanted air flow. It works through a chemical reaction between two liquid components, an isocyanate and a polyol, which rapidly form a lightweight plastic filled with tiny gas-filled cells. There are two main types: open-cell foam, which is softer and more flexible, and closed-cell foam, which is denser, more rigid, and more resistant to moisture vapor. NOW YOU KNOW!
SSRIs: How a Common Class of Antidepressants Works
SSRIs inhibit the serotonin transporter (SERT) on presynaptic neurons, so serotonin stays in the synaptic cleft longer. They act on SERT within hours, but the NHS says benefits commonly appear after 1 to 2 weeks and can take longer. The delay is thought to reflect slower adaptations in receptors and circuits, and the idea that low serotonin causes depression (the monoamine hypothesis) is a postulate rather than settled fact. Regulators warn about withdrawal symptoms when stopping, and about monitoring young people early in treatment. This case is general information, not medical advice.
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DID YOU KNOW? SSRIs or selective serotonin reuptake inhibitors, increase serotonin signaling in the brain by blocking the serotonin transporter, which normally removes serotonin from the synaptic space after release. This leaves more serotonin available between neurons, but the effects develop gradually because downstream receptors and neural circuits adapt over weeks. Common SSRIs include: fluoxetine, sertraline, citalopram, escitalopram, and paroxetine. NOW YOU KNOW!
Fear: What Your Brain and Body Do When Danger Appears
When the amygdala perceives danger, it signals the hypothalamus. The hypothalamus activates the sympathetic nervous system, and the adrenal glands release epinephrine (adrenaline), raising heart rate, blood pressure and blood sugar. If the threat persists, the HPA axis takes over: CRH from the hypothalamus triggers ACTH from the pituitary, which prompts the adrenal cortex to release cortisol. The amygdala is central to fear of external threats, but a 2013 study showed that people without functioning amygdalae can still feel fear and panic triggered from inside the body.
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DID YOU KNOW? Fear begins as the brain rapidly detects potential danger with the amygdala coordinating signals from sensory systems and triggering defensive response. The hypothalamus activates the sympathetic nervous system, causing the adrenal glands to release adrenaline and noradrenaline. At the same time, the hypothalamic pituitary adrenal axis releases cortisol, helping maintain energy availability during prolonged stress. NOW YOU KNOW!
Surprise: What Happens in the Brain When Expectations Break
The locus coeruleus (LC) is a small nucleus in the brainstem and the brain's main source of noradrenaline (norepinephrine). Brainstem fMRI studies show that deviant, behaviorally relevant stimuli produce brief bursts of LC activity, which spread arousal and attention signals widely through the brain. The LC isn't a surprise-only system, though. It also tracks task relevance and general arousal, and other neuromodulatory systems respond to surprise too.
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DID YOU KNOW? Surprise is the brain's response to something that sharply violates its expectations, producing a rapid shift in neural and physiological activity. Sensory information is processed through networks including the thalamus, prefrontal cortex, and hippocampus, which help compare incoming information with predictions and stored memories. Unexpected stimuli can trigger the locus coeruleus, increasing the release of norepinephrine and briefly heightening attention and arousal. NOW YOU KNOW!
Disgust: The Emotion Built to Keep Contamination Out
Imaging studies link the anterior insula to disgust. In one study, how strongly people felt disgust tracked anterior insula activity regardless of its form. The insula isn't disgust-specific, though: it represents the body's internal (interoceptive) state in many emotions. A 2022 meta-analysis found that 'core' disgust (contamination) and 'social' disgust (moral) engage different networks but share anterior insula and fusiform activity. Occipital, amygdala and prefrontal regions are involved too.
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DID YOU KNOW? Disgust is driven by a neural system that detects potential sources of contamination, poisoning, or biological harm. The anterior insular cortex is especially important, integrating sensory information from taste, smell, and the internal state of the body, while the basal ganglia and amygdala contribute to avoidance and threat processing. NOW YOU KNOW!
Anger: The Brain Circuits Behind a Flash of Anger
Neuroscience reviews describe reactive anger and aggression as driven by a threat system running from the amygdala through the hypothalamus to the periaqueductal gray (PAG). The prefrontal cortex, especially the ventromedial and orbital regions, helps appraise and regulate these responses, and reduced function there is associated with more reactive aggression. The bodily surge is the sympathetic fight-or-flight response: epinephrine raises heart rate and blood pressure and sends blood to the muscles.
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DID YOU KNOW? Anger involves coordinated activity in brain circuits that detect threats, evaluate conflict, and prepare the body for action. The amygdala and hypothalamus help initiate the response, while reduced activity in parts of the prefrontal cortex can weaken regulatory control over emotional reactions. The hypothalamus activates the sympathetic nervous system, increasing adrenaline and noradrenaline, which raise heart rate, blood pressure, and blood flow to skeletal muscles. NOW YOU KNOW!
Sadness: What Changes in the Brain When We Feel Sad
A 2020 multidisciplinary review describes sadness as a normal emotion with distributed brain correlates. These include the subgenual anterior cingulate cortex, the dorsal periaqueductal gray and changes in frontal activity, along with altered autonomic control of the heart. The review treats ordinary sadness and clinical depression as related but distinct. The Reel's specific neurotransmitter claims are simplifications that these sources don't directly support.
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DID YOU KNOW? Sadness involves coordinated changes across the brain's emotional, reward, and physiological systems. Dopamine signaling often decreases in reward-related circuits, contributing to reduced motivation and pleasure, while changes in serotonin and norepinephrine signaling can affect mood, arousal, and behavioral regulation. NOW YOU KNOW!
Happiness: Why There's No Single 'Happy Chemical'
Research by Kent Berridge and Morten Kringelbach separates 'wanting' (incentive motivation, in which dopamine plays a major part) from 'liking' (hedonic pleasure). Liking depends on small hedonic hotspots, such as parts of the nucleus accumbens and ventral pallidum, where opioid and endocannabinoid signals amplify pleasure. Raising dopamine can increase wanting without increasing liking. The researchers also distinguish moment-to-moment pleasure from broader happiness, which includes a sense of meaning.
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DID YOU KNOW? Happiness isn't produced by a single feel-good chemical. It emerges from interacting neural circuits and chemical signals. Dopamine helps encode reward prediction and motivation, while serotonin influences mood, appetite, sleep, and behavioral regulation. Endogenous opioids and endocannabinoids can contribute to pleasure and reward. NOW YOU KNOW!
Rick Charls: A 172-Foot Dive at SeaWorld San Diego in 1983
In 1983, ABC's Wide World of Sports staged its last World Record High Dive at SeaWorld San Diego. To count, a dive had to include at least one somersault, and the diver had to leave the water without help. Five divers succeeded from 172 ft (52.4 m): Rick Charls, Rick Winters, Dana Kunze, Bruce Boccia and Mike Foley, and all five share credit for the record. Charls, from Cincinnati, was a collegiate All-American at Ohio University and the 1980 world tandem high-diving champion.
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DID YOU KNOW? In 1983, high diver Rick Charls stepped onto a platform 172 ft, or 52.4 m above the water at Seaworld San Diego for ABC's Wide World of Sports World Record High Dive Challenge. Charls launched into the air, completed a dive, and hit the water at roughly 70 mph, before resurfacing under his own power. He was one of five divers who successfully completed the 172 ft-dive during the event, and Charls is still credited with the record under the competition's criteria. NOW YOU KNOW!
(Z) Pinch Me: A Plasma Squeezed by Its Own Current
In a Z-pinch, current flowing along the axis of a plasma or a metal target creates a circular (azimuthal) magnetic field, and the resulting Lorentz force drives the material inward. Sandia's Z machine stores up to 22 MJ and discharges it as a pulse of about 100 nanoseconds, with currents of about 26 million amps (up to about 30 MA). That gives magnetic pressures of about 100 Mbar at a 1 mm radius. On Z, the targets are usually wire arrays or metal liners that vaporize into plasma. The Reel's footage is credited to Zap Energy, a company developing a different, sheared-flow Z-pinch approach to fusion.
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DID YOU KNOW? A plasma Z-pinch compresses plasma using the magnetic field created by an enormous electrical current flowing directly through it. When the current travels along the plasma's axis, it generates a circular magnetic field around the plasma, producing an inward force that squeezes the plasma into a narrow column. In experiments such as the Z Machine at Sandia National Laboratories, electrical pulses can reach tens of millions of amperes, generating magnetic pressures powerful enough to compress plasma to extreme temperatures and densities. NOW YOU KNOW!
Kenny POWERs: The 1979 Rocket-Car Jump Across the St. Lawrence That Went Wrong
The St. Lawrence 'Super Jump' was Canadian stuntman Ken Carter's project, begun in 1976, to jump a rocket-powered Lincoln Continental about a mile from near Morrisburg, Ontario to the United States. On September 26, 1979, after Carter's attempt was aborted, the backers and film producers had American stuntman Kenny Powers make the jump while Carter was away. The bumpy runway damaged the car, the parachutes deployed early, and it traveled about 506 feet before landing in shallow water. Powers survived with eight broken vertebrae, three broken ribs and a broken wrist. He died in 2009.
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DID YOU KNOW? In 1979 American stuntman Kenny Powers was secretly put behind the wheel of a rocket-powered Lincoln Continental, for one of the most bizarre car jumps ever attempted. The plan was to cross about one mile of the Saint Lawrence River, from Canada into the United States, using an enormous 26-meter high ramp. Powers accelerated toward the ramp, but the car became airborne for only about 506 feet before breaking apart and crashing into the river. Powers survived but suffered eight broken vertebrae, three broken ribs, and a broken wrist. NOW YOU KNOW!
Branched Flow: A Laser Inside a Soap Film Splits Into Branching Filaments
Branched flow happens when waves pass through a weak, smoothly varying disorder whose features are larger than the wavelength. The waves form channels of higher intensity that keep dividing. It was first seen with electrons and microwaves. In 2020, Patsyk, Sivan, Segev and Bandres reported the first observation with light in Nature. They sent a laser into a soap film, which acts as a thin waveguide, and the film's smooth thickness variations focused the light into branching filaments that stayed unexpectedly collimated.
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DID YOU KNOW? A thin soap bubble film can make branched flow visible in ordinary laser light. As the laser travels through the film, tiny thickness variations in curved regions of the soap membrane act like a constantly changing network of microscopic lenses, slightly redirecting different parts of the beam. Instead of spreading smoothly, the light concentrates into bright filaments that repeatedly split and merge, creating a tree-like pattern known as branched flow. The effect comes from wave propagation through a complex, disordered medium. NOW YOU KNOW!
Hefei Fusion: A 582-Ton Superconducting Magnet Built for Fusion Research
On June 27, 2026, the Institute of Plasma Physics in Hefei (ASIPP) completed and accepted a toroidal field superconducting magnet for CRAFT, China's Comprehensive Research Facility for Fusion Technology. The magnet weighs 582.4 t, measures 21 × 12 × 3.3 m, operates at 98 kA and stores 120 GJ. Sixteen such coils would produce 6.5 T at the plasma center and a 14.5 T peak. ASIPP says it has 1.3 times the volume and three times the stored energy of an ITER TF magnet, making it the world's largest fusion-reactor superconducting magnet.
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DID YOU KNOW? China has completed a 582.4-ton superconducting toroidal field magnet, designed for next generation fusion research. Built by the Institute of Plasma Physics in Hefei, this enormous D-shaped structure measures about 21 m long, 12 m wide, and 3.3 m high. It carries up to 98,000 amps and stores roughly 120 GJ of magnetic energy. NOW YOU KNOW!
Elytra Lift: A Ladybird's Flight Wings Fold Away Under Its Spotted Shell
A ladybird's spotted elytra are hardened forewings. Its membranous hindwings do the flying and fold away beneath the elytra when not in use. In 2017, Kazuya Saito and colleagues at the University of Tokyo replaced one elytron of a seven-spot ladybird with a transparent artificial one to watch the folding. The beetle closes its elytra and then moves its abdomen repeatedly, while the elytron's edge and underside guide the wing along set fold lines. The process takes about two seconds. The wing's veins act like a tape spring, which helps it snap open for flight.
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DID YOU KNOW? A ladybug's wings are built like a compact aircraft hidden beneath its colorful shell. The hard spotted outer wings are actually elytra, modified forewings that protect the delicate flight wings underneath. Before takeoff, the ladybug lifts the elytra and unfolds its transparent hindwings, which are several times larger than the protective covers when fully extended. These hindwings contain a network of veins for structural support, while their thin membrane allows them to beat rapidly and generate lift. NOW YOU KNOW!
Shoot-And-Scoot: Serbia's Wheeled 155 mm Howitzer, the NORA B-52
The NORA-B52 is a 155 mm, 52-caliber self-propelled gun-howitzer made by Serbia's state-owned Yugoimport-SDPR, mounted on 8x8 truck chassis (KAMAZ and MAN). According to the manufacturer, ranges are 32.5 km with ERFB rounds, 41.5 km with base-bleed rounds and up to 52 km with V-LAP rounds, at up to 4 rounds per minute. The newest NG ('Perun') variant, shown in 2023, is operated from the cab and has a fully automatic loader holding 30 rounds plus 6 more on the vehicle. The M21 variant on a MAN chassis has 12 rounds in its autoloader, plus 24 stowed.
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DID YOU KNOW? Serbia's NORA B-52 is a wheeled 155 mm self-propelled gun howitzer, designed around the same basic idea as Sweden's Archer: heavy artillery mounted on an 8x8 truck for rapid mobility and shoot-and-scoot operations. Its 155 mm 52-caliber gun is paired with an automated loading system complete with chain conveyor, allowing ammunition to be fed into the breech without manually handling every round. NOW YOU KNOW!
CrabMaxxing: Paddies That Grow Rice and Crabs at the Same Time
In northeastern China, especially around Panjin in Liaoning, farmers stock Chinese mitten crabs (Eriocheir sinensis) in rice paddies. Studies there report that the crabs help control weeds and some rice diseases. Fields can match or slightly exceed monoculture rice yields while using less fertilizer nitrogen, and the crabs are harvested as a second, valuable crop. Researchers have also studied how crab stocking density affects the yields of both rice and crabs.
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DID YOU KNOW? In parts of Asia, farmers use young crabs in flooded rice paddies as a form of natural pest control and soil management. The crabs move through the shallow water and mud eating insects, larvae, weeds, and other small organisms that can compete with rice plants. In some systems, farmers deliberately raise rice and freshwater crabs together, creating a form of integrated aquaculture where the same flooded field produces both a grain crop and a second food source. NOW YOU KNOW!
Volar eVTOL: A Wingless, Supercar-Styled eVTOL From London
Bellwether Industries, founded in London in 2019, is developing the Volar, a wingless lifting-body eVTOL with ducted fans hidden inside its body. In November 2021, a half-scale, remotely piloted two-seat prototype called Antelope made eight free flights in Dubai, up to about 4 m high and about 40 km/h. The company's targets for the final aircraft are 4 to 5 seats, a width of 3.2 m, about 220 km/h and a 600 kg maximum takeoff weight. In 2023 it announced a propulsion partnership with Schubeler for its next prototype, Oryx. None of these targets has been demonstrated at full scale.
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DID YOU KNOW? Bellwether Industries Volar is a British-designed electric vertical takeoff and landing aircraft that looks more like a futuristic supercar. Its defining feature is a wingless lifting-body design with hidden electric propulsion, allowing the aircraft to maintain a compact profile intended for urban environments rather than relying on exposed rotors or conventional wings. NOW YOU KNOW!
Iranian Missile Cities: Iran's Tunnel Bases for Missiles and Drones
Iran's Islamic Revolutionary Guard Corps (IRGC) has publicized underground 'missile cities' in state-released videos. In March 2025 it showed a large facility where Iranian media said missiles including Sejjil, Qadr-H and Kheibar Shekan were stored. Analysts at The War Zone noted that the munitions appeared to sit in open galleries with few blast doors. During the June 2025 Israel-Iran war, analysts at ISW reported that Israeli strikes destroyed launch sites and tunnel entrances at several missile bases. In November 2025, Iran's passive-defense chief said the underground infrastructure was largely intact. Many details can't be independently verified.
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DID YOU KNOW? Iran has spent decades building an extensive network of underground "missile cities" and drone facilities, carving tunnels into mountains and burying military infrastructure beneath layers of rock and concrete. These complexes can combine missile storage, assembly, and maintenance areas, while some newer installations are associated with drones and other unmanned systems. NOW YOU KNOW!
WHRGs 2026: 2,056 Robots Competed in Beijing's Robot Olympics
The 2nd World Humanoid Robot Games ran Aug 22–26, 2026 at Beijing's National Speed Skating Oval, with 2,056 robots from 666 teams in 16 countries. That's about four times as many robots as the 2025 Games. The rules now required full autonomy in most competitive events, and the job-style 'scenario' events moved into real factories, hotels and model homes.
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DID YOU KNOW? The 2026 World Humanoid Robot Games in Beijing were less interesting as a collection of robot sports, and more as a snapshot of how quickly humanoid robotics is advancing. More than 2,000 robots from 666 teams competed, but the important shift was toward autonomy, dexterity, balance, and practical tasks that resemble actual work, rather than simply demonstrating that a robot can walk. NOW YOU KNOW!
Ocean-3: This Giant Steel Ball Is an AI Data Center Powered by Waves
Ocean-3 is Panthalassa's series of wave-powered, floating AI computing nodes. Each one is an 85 m plate-steel structure shaped like a golf ball on a tee. As it bobs, seawater is driven up an internal tube to spin a turbine, which powers onboard GPUs. The nodes have no anchor and no power cable. They steer themselves, and they send results to shore by satellite. Pilot units were planned for the northern Pacific in 2026, with commercial deployments targeted for 2027.
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DID YOU KNOW? Panthalassa's Ocean-3 is a radically different approach to building AI data centers. As the roughly 85-meter-tall steel node rises and falls with the waves, water is forced through an internal system and across turbines, generating electricity for onboard AI hardware. The platform is untethered and self-propelled, AI workloads are processed offshore and the results can be transmitted back to land by satellite. NOW YOU KNOW!
Mobile Mortars: Soldiers Fire This Weapon by Dropping a Shell Down the Tube
A mortar is a light, smoothbore tube that a small crew can carry and set up on a bipod and baseplate. A round dropped down the muzzle hits a fixed firing pin at the bottom, which sets off its propellant charge and throws it out at a steep angle (generally above 45 degrees). That high arc lets mortars hit targets behind hills or cover that the crew can't see.
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DID YOU KNOW? Portable mortars are lightweight indirect fire weapons designed to be carried and operated by a small crew, typically consisting of a tube, bipod, and baseplate. The crew drops a fin-stabilized mortar round down the muzzle, where it strikes a firing mechanism and ignites its propellant, launching the projectile on a steep ballistic trajectory toward a target that may be out of direct line of sight. NOW YOU KNOW!
Cherenkov Glow: This Blue Glow Is Particles Outrunning Light in Water
Cherenkov radiation is light given off when a charged particle moves through a medium like water faster than light travels in that medium, which in water is about 75% of its vacuum speed. Nothing beats light in a vacuum. The particle's wake of polarized molecules builds into a cone-shaped 'shockwave' of light, much like a sonic boom. In reactor pools, high-energy electrons make the water glow blue. The glow isn't radioactive itself, and inspectors use it to check spent fuel.
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DID YOU KNOW? Cherenkov radiation is the eerie blue glow produced when a charged particle travels through a material faster than light can travel through that material; not faster than light in a vacuum! In water, for example, light travels at only about 75% of its vacuum speed, so high-energy electrons produced by nuclear reactions can exceed that local speed limit. As the particle passes through the medium, it polarizes atoms along its path, and when those disturbances coherently interact, they produce a cone-shaped electromagnetic shockwave analogous to a sonic boom. The characteristic blue light seen in nuclear reactor pools is therefore not the reactor itself glowing, but Cherenkov radiation generated by energetic particles moving through the surrounding water.
Heavenly Lake: This Lake Sits Almost 3 Miles Above Sea Level
Namtso (Nam Co) in central Tibet sits 4,718 m (15,479 ft) above sea level, almost 3 miles up. It's often called the world's highest saltwater lake. Its Tibetan name means 'heavenly lake', and it's one of Tibet's sacred lakes, with the snow-capped Nyenchen Tanglha range rising along its southern shore.
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DID YOU KNOW? Namtso Lake, one of the highest major lakes in the world, sits at roughly 4,718 m or 15,479 ft above sea level on the Tibetan Plateau, surrounded by the snow-covered peaks of the Nyenchen Tanglha mountain range. Its name means "heavenly lake" in Tibetan, and its intensely blue, remarkably clear water contrasts dramatically with the barren high-altitude landscape around it. NOW YOU KNOW!
Shrinking Circuits: One Chip Can Now Hold 80 Billion Transistors
The first integrated circuits (1958–60) had just one to four transistors. Intel's 4004 microprocessor (1971) had 2,300 on a 12 mm² die built with a 10-micrometer process. Today a single chip such as NVIDIA's GH100 packs 80 billion transistors onto 814 mm², thanks to decades of shrinking features. Even so, modern node names like '5 nm' are generation labels, not literal transistor sizes.
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DID YOU KNOW? The progression of semiconductor manufacturing can be seen in the astonishing shrinking of transistor features over the past several decades. Early integrated circuits contained only a few thousand transistors, while modern processors can pack tens of billions onto a piece of silicon only a few hundred square millimeters across. Transistors that once measured micrometers across have progressed through nanometer-scale process generations. NOW YOU KNOW!
Modern Mahjong: This Table Shuffles and Stacks the Tiles for You
Automatic mahjong tables hide a rotating drum under the felt. Players push the used tiles in, and the machine shuffles them, uses magnets to turn each tile face-down, and stacks the four walls. The real trick is that they use two sets of tiles: one is shuffled and stacked inside while the other is in play, so the next hand rises up almost instantly. Fully automatic tables appeared in Japan around 1980, replacing the hand 'washing' and wall-building that went before.
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DID YOU KNOW? Mahjong has changed dramatically with the introduction of automatic mahjong tables, which can shuffle and stack an entire set of tiles in seconds using a hidden rotating mechanism beneath the playing surface. Traditional games required players to manually mix the tiles and build the four walls before each hand, a process that could take several minutes and added physical wear to the tiles. Automatic tables essentially eliminate that downtime, allowing the next hand to be ready almost immediately. NOW YOU KNOW!
TeraFab: Musk's Planned Chip Plant Would Cover 100 Million Square Feet
TeraFab is the AI-chip complex that SpaceX and Tesla plan to build in Grimes County, Texas. It would make, package and test logic and memory chips under one roof. Texas announced the first phase on Aug 6, 2026: more than $16.8 billion, 3,000 jobs and a 100-million-square-foot facility. Tax filings sketch four phases worth up to about $119 billion, but the later phases aren't committed.
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DID YOU KNOW? SpaceX and Tesla's TeraFab is a planned semiconductor manufacturing complex in Grimes County, Texas, designed to vertically integrate chip production under one roof, including logic and memory fabrication, advanced packaging, and testing. The initial phase carries an announced $16.8 billion investment, and is planned to span roughly 100 million square feet, with the eventual project potentially reaching around $119 billion. NOW YOU KNOW!
The Vault: Your Cells Are Full of Hollow Barrels Called Vaults
Vaults are giant, hollow, barrel-shaped particles made of protein and RNA. They're found in the cytoplasm of most eukaryotic cells, with about 10,000 in a typical human cell. Each one is a 12.9-megadalton shell made of 78 copies of the major vault protein, built as two identical 39-protein halves. It also carries smaller partners (VPARP, TEP1 and vault RNA). Nearly 40 years after their discovery in 1986, nobody knows for sure what vaults do.
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DID YOU KNOW? Vaults are enormous ribonucleoprotein particles found in the cytoplasm of most eukaryotic cells, built primarily from major vault protein, MVP, and smaller components including vault RNA and the vault poly(ADP-ribose) polymerase proteins. Each vault resembles a hollow barrel or inverted cathedral vault and has a molecular mass of roughly 12.9 megadaltons. The particles are assembled from two identical halves, each containing 39 copies of MVP arranged into a symmetrical structure, with a central cavity and flexible "cap" proteins. NOW YOU KNOW!
I'm Obsessed...: A Tongue-In-Cheek 'Love Story' Review of the Horror Film Obsession
Obsession is an R-rated horror film written and directed by Curry Barker, released in U.S. theaters by Focus Features on May 15, 2026. Bear (Michael Johnston), a music-store worker, breaks a novelty 'One Wish Willow' to make his friend Nikki (Inde Navarrette) love him, and the wish turns her obsessive and dangerous. The Reel's 'love story' review is deliberately ironic. Critics praised the film, with 93% on Rotten Tomatoes and 77 on Metacritic, and Box Office Mojo lists a worldwide gross of about $522.8 million.
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DID YOU KNOW? Obsession is THE love story of 2026, an absolutely beautiful portrait of two people finding their way to each other. The chemistry is incredible, the cinematography is gorgeous, and the repeated head-on framing gives every interaction this wonderfully intimate, romantic quality. Like in every relationship, things get a little complicated, but the film ultimately delivers. After all that time spent missing each other emotionally, Bear and Nikki finally reach the same place at the same time. Phenomenal. NOW YOU KNOW!
National NEO: The 1983 Battery Ad Where a Toy Firefighter Climbs a Skyscraper
In 1983, Matsushita Electric (now Panasonic) aired a TV ad for National 'Neo Hi-Top' batteries, titled 'Because the Building Is There' (そこにビルがあるからだ篇). A battery-powered toy firefighter climbs a long ladder up a 33-story building, about 140 m, and at the top puts out a cigarette butt with its hose. Tetsuo Hashimoto, the Hakuhodo creative director behind it, later explained that the first idea was rock climbing, and that a Panasonic staffer redrew the toy's original cat face as a firefighter. The ad is widely reported to have won a gold award at Cannes.
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DID YOU KNOW? The National NEO High-Top commercial became a classic of Japanese advertising by demonstrating battery life through a simple, but unforgettable visual. The ad follows a tiny battery-powered toy firefighter as it climbs a ladder attached to the side of a skyscraper, with a camera continually pulling back to reveal the building's immense height, while the toy keeps ascending without stopping. The commercial went on to win international advertising awards and remains one of the most celebrated examples of using visual storytelling to communicate a product's performance. NOW YOU KNOW!
Canadian Wildfires: Canada's Boreal Fires and the Smoke That Crosses Borders
Canada's 2023 wildfire season was the largest since national records began, burning about 15 million hectares (the widely reported 18.5 million was a preliminary operational figure). That's more than double the previous record of 6.7 million hectares in 1989 and roughly 4% of Canada's forest area. Lightning started 59% of the roughly 6,700 fires but accounted for 93% of the area burned. More than 200 communities were evacuated, and smoke degraded air quality in cities more than 1,000 km away, including on the U.S. east coast.
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DID YOU KNOW? Canada experiences some of the largest wildfires on earth, with millions of hectares of boreal forest burning during severe fire seasons, driven by prolonged drought, high temperatures, low humidity, and lightning strikes. In recent years, increasingly intense fire seasons have produced massive smoke plumes that travel thousands of kilometers, degrading air quality across Canada and the United States, while disrupting transportation and daily life. NOW YOU KNOW!
Whale Milk: Why Whale Milk Doesn't Dissolve in the Sea
Baleen whale milk at mid-lactation is about 30-50% fat, 9-15% protein and only 40-53% water. Toothed whales and dolphins produce thinner milk, about 10-30% fat. Whales have no external nipples; their teats sit inside mammary slits, and the mother squirts milk into the calf's mouth. Its thickness keeps it from dispersing in seawater, and a blue whale calf can gain over 100 kg a day. The richest-milk record, though, belongs to seals such as the hooded seal, not whales.
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DID YOU KNOW? Whales produce some of the richest milk in the animal kingdom to support the extraordinary growth rates of their calves in the open ocean. Because milk would quickly disperse in seawater, whale milk has a thick, toothpaste-like consistency, with fat contents often ranging from 30% to 50%, allowing it to stay cohesive as the calf feeds underwater. A mother whale ejects the milk directly into her calf's mouth using muscular contractions around the mammary glands. NOW YOU KNOW!
The Odyssey: Homer's Epic of Odysseus's Ten-Year Voyage Home
The Odyssey is an ancient Greek epic poem in 24 books, traditionally attributed to Homer and generally dated to around the late 8th or early 7th century BCE. It follows Odysseus, king of Ithaca, on his ten-year return from the Trojan War: blinding the Cyclops Polyphemus, a year with the sorceress Circe, sailing past the Sirens tied to his mast, and finally reclaiming his home from his wife Penelope's suitors. Counting the war, he's away for twenty years. The Reel was posted on July 18, 2026, the day after Christopher Nolan's film adaptation opened in U.S. theaters.
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DID YOU KNOW? The Odyssey is one of the foundational works of western literature, telling the story of the Greek hero Odysseus and his ten-year journey home following the Trojan War. Along the way, he encounters legendary challenges, including the Cyclops Polyphemus, the enchanting Circe, and the deadly songs of the sirens. Its influence can still be seen in modern storytelling nearly three millennia after it was first composed. NOW YOU KNOW!
Anduril: A Defense Tech Company Building Autonomous Weapons
Anduril Industries was incorporated on April 20, 2017, by Palmer Luckey (creator of the Oculus Rift), Trae Stephens, Matt Grimm, Joe Chen and Brian Schimpf (now CEO). It's based in Costa Mesa, California. Its Lattice software fuses data from Anduril's own and third-party sensors and is the core of its products, which range from Sentry surveillance towers used on the U.S.–Mexico border to Ghost and Altius drones, Roadrunner and Barracuda interceptors and missiles, Ghost Shark autonomous submarines and the Fury (YFQ-44A) collaborative combat aircraft, first flown on October 31, 2025. Unlike traditional contractors paid to develop to a Pentagon requirement, it builds products on its own money and then sells them. A $5 billion raise in May 2026 valued it at $61 billion, and 2025 revenue was reported at about $2.2 billion. It also has critics: the WSJ reported test setbacks, including a Navy exercise in which more than a dozen Lattice-controlled drone boats failed, and civil-liberties groups have criticized its border towers.
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DID YOU KNOW? Anduril Industries is an American defense technology company founded in 2017 that develops autonomous military systems centered around artificial intelligence and sensor fusion, rather than traditional defense procurement models. Its flagship software platform, Lattice, integrates data from drones, radars, cameras, and other sensors into a single real-time operational picture. NOW YOU KNOW!
Independence Day: The United States Turned 250 on July 4, 2026
July 4, 2026 was the 250th anniversary, or semiquincentennial, of the adoption of the Declaration of Independence. The Second Continental Congress voted for independence on July 2, 1776, by adopting the Lee Resolution with 12 colonies in favor and New York not voting. It adopted the Declaration's text on July 4, and John Dunlap printed the first copies that night. Contrary to popular belief, the engrossed parchment wasn't signed on July 4. Most delegates signed it on August 2, 1776, and 56 eventually did.
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DID YOU KNOW? Today marks the 250th anniversary of the United States, commemorating the adoption of the Declaration of Independence on July 4th, 1776, when the Thirteen Colonies formally declared their independence from Great Britain. Known as the semiquincentennial, the milestone celebrates two and a half centuries of American history, from the nation's founding through its growth into a global economic, scientific, and cultural power. Across the country, communities are observing the anniversary with parades, historical reenactments, concerts, and fireworks, while reflecting on the ideals of liberty, self-government, and equality that continue to shape the nation 250 years after its founding. NOW YOU KNOW!
The Glacier That Bleeds: Antarctica's Glacier That Seems to Bleed
Blood Falls is a sporadic outflow of brine at the snout of Taylor Glacier in the McMurdo Dry Valleys, where the glacier ends at ice-covered Lake Bonney. Griffith Taylor found it in 1911, and its color was first blamed on red algae. The source is ancient seawater, concentrated by freezing and sealed beneath the glacier. Estimates range from about 1.5 million years of isolation (for the microbes living in it) to a Pliocene origin about 5 million years ago. The brine is salty, iron-rich and has no detectable oxygen. When it reaches the air, dissolved ferrous iron oxidizes into iron-rich nanospheres that stain the ice red as the brine drops 60 to 80 feet to the lake shore. A 2017 radar survey traced a brine pathway more than 300 feet long inside the glacier, making Taylor the coldest known glacier with persistently flowing water.
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DID YOU KNOW? Blood Falls is a waterfall at the front of Taylor Glacier in Antarctica, where deep red water flows from beneath the ice, creating the appearance of blood spilling onto the frozen landscape. The unusual color comes from iron-rich, hypersaline water that has been trapped beneath the glacier for millions of years. When this oxygen-poor brine reaches the surface, the dissolved iron reacts with oxygen in the air and rapidly oxidizes. NOW YOU KNOW!
Algaecultural: Growing Microalgae in Walls of Glass Tubes
Microalgae are grown in open ponds or in closed photobioreactors (glass or plastic tubes and panels) that supply light, CO2 and nutrients. The footage is credited to Jongerius ecoduna of Bruck an der Leitha, Austria. The company says its patented system uses vertical glass modules, moves the culture hydrostatically rather than with pumps, and runs continuously year-round in a 1-hectare plant that opened in 2018. The company's founders originally aimed at biodiesel but concluded algae were too valuable to burn, and the plant targets food, supplements and cosmetics. Algae biofuel is still not commercially competitive: ExxonMobil ended its algae program in 2022-23 after about $350 million.
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DID YOU KNOW? Algae farms can function as large-scale photobioreactors, using sunlight, carbon dioxide, water, and nutrients to cultivate microscopic algae inside transparent tubes, flat panels, or open ponds. Through photosynthesis, the algae rapidly converts carbon dioxide into biomass that can be processed into biofuels, animal feed, nutritional supplements, pharmaceuticals, or industrial chemicals. NOW YOU KNOW!
Footstep Power: These Floor Tiles Turn Footsteps Into Electricity
Starting in 2006, JR East tested a 'power-generating floor' at Tokyo Station's ticket gates. Piezoelectric discs inside the floor turn the pressure and vibration of passengers' footsteps into electricity. The best trials made up to about 940 kilowatt-seconds a day. That's only about a quarter of a kilowatt-hour, enough for displays or a ticket gate but not for the station. In 2008 Soundpower tested a similar mat at Shibuya Station that lit a holiday display. The Reel's glowing tiles look like Pavegen's, which work differently: they use electromagnetic generators, not piezo crystals.
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DID YOU KNOW? Japan has experimented with piezoelectric floor tiles that generate small amounts of electricity from the pressure of people walking across them. The tiles contain materials that produce an electric charge when mechanically compressed, so every footstep slightly deforms the surface and converts kinetic energy into electrical energy. These systems have been installed in high traffic locations, such as train stations, where thousands of daily commuters can collectively generate enough power to run LED displays, sensors, or other low power devices. NOW YOU KNOW!
Rapid Liquid Printing (RLP): This Machine Prints Objects Inside a Tank of Gel
RLP stands for Rapid Liquid Printing, a 3D-printing method developed at MIT's Self-Assembly Lab. Instead of stacking thin layers in air, a nozzle on a robot or CNC machine draws liquid rubber, foam or plastic freely in 3D inside a tank of granular gel. The gel holds the wet material in place until it cures. Then the part is lifted out and rinsed with water. Prints take seconds to minutes rather than hours, and they can be as big as furniture.
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DID YOU KNOW? Rapid Liquid Printing, or RLP, is an additive manufacturing technique that creates large, soft objects by extruding liquid material directly into a tank filled with a specially engineered gel suspension rather than building it layer by layer in air, allowing complex three-dimensional shapes to be formed almost instantly. NOW YOU KNOW!
Quantum Infrastructure: This Golden Chandelier Keeps Qubits Colder Than Outer Space
The gold 'chandelier' in photos of quantum computers is really a refrigerator. Superconducting qubits are so easily disturbed that the chip sits on the bottom plate of a dilution refrigerator. Each stage of the fridge is colder than the one above, and the bottom plate is held around 10–15 millikelvin by a mixture of helium-3 and helium-4. That is more than 180 times colder than the 2.7 K of deep space.
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DID YOU KNOW? A modern quantum computer is built around an intricate cryogenic architecture designed to protect its extremely fragile qubits from heat, vibration, and electromagnetic interference. In superconducting systems, the quantum processor is mounted at the bottom of a towering dilution refrigerator, a multi-stage cooling apparatus that uses mixtures of helium-3 and helium-4 to reach temperatures of around 10-20 mK, colder than outer space and just a fraction of a degree above absolute zero. NOW YOU KNOW!
Fish Fattening: Wild Bluefin Tuna Are Fattened in Sea Cages Before Sale
Bluefin tuna 'fattening' or ranching is capture-based aquaculture: wild tuna are caught, usually by purse seine, towed in cages to farms and fed for months before harvest, mainly for the Japanese sashimi market. In the Mediterranean, farms feed defrosted sardines, herring, mackerel and squid. Daily rations run about 2-10% of the caged biomass, and one Greek farm reported 5-8% of body weight a day at the start, falling to 2-3% near harvest. Feed conversion is poor, around 10-20 kg of baitfish per kg gained, because only about 5% of the energy goes into growth. Much of the gain is fat, which raises the price.
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DID YOU KNOW? In tuna fattening operations, wild-caught Atlantic bluefin tuna or Pacific bluefin tuna are transferred to large offshore sea cages and fed enormous quantities of oily baitfish to rapidly increase their weight before harvest. A single adult tuna can consume several percent of its body weight in food each day. NOW YOU KNOW!
RoboClassical: Robot Arms Carving Marble Statues From 3D Scans
In and around Carrara, Italy, studios such as Robotor use large multi-axis industrial robots to carve marble from 3D scans or digital models. Software turns the model into toolpaths and the robot removes stone. Bloomberg described a 4.5-ton robot working along nine axes. Robotor's co-founder Giacomo Massari told 60 Minutes the robots are about 10 times faster than hand carving, and says they do about 99% of the work. Skilled artisans still hand-finish the surfaces and details the machine can't reach, which can take months. Some Carrara sculptors object that robot-made work isn't true sculpture.
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DID YOU KNOW? Modern CNC robotic carving systems can recreate classical marble statues with astonishing accuracy by using digital 3D scans and computer-controlled cutting tools. The process begins with a high-resolution scan or digital model of a sculpture, which is converted into tool paths that guide a multi-axis robotic arm through thousands of precise movements. Using diamond-tipped cutters, the robot gradually removes material from a marble block, reproducing fine contours, drapery folds, and anatomical details that would take a human sculptor months or years to carve by hand. NOW YOU KNOW!
Alsomitra Macrocarpa: The Javan Cucumber's Seed Flies Like a Tiny Glider
Alsomitra macrocarpa, sometimes called the Javan cucumber and formerly named Zanonia macrocarpa, is a climbing gourd of the Malesian forests, notably Indonesia's Sunda Islands. Its football-sized fruits hang high in the canopy and hold hundreds of seeds. Each seed is set in two papery wing membranes spanning about 13 cm, which Guinness lists as the world's largest winged seeds. When released, the seeds glide in a gently undulating flight called a phugoid. In 1897 the German professor Friedrich Ahlborn studied the seed's self-stabilizing shape. That work inspired Igo Etrich's 1904 tailless glider and, through it, the wing of the Etrich Taube, which first flew in 1910.
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DID YOU KNOW? Alsomitra macrocarpa is a tropical climbing plant native to Southeast Asia that produces one of the most remarkable seeds in the plant kingdom. Each seed is equipped with a pair of thin, papery wings that form a highly efficient glider, allowing it to travel long distances on air currents after being released from the plant's large, gourd-like fruit. Unlike many winged seeds that simply spin or flutter, the seed of Alsomitra macrocarpa maintains stable, aircraft-like flight, and can glide hundreds of meters under favorable conditions. NOW YOU KNOW!
Big Boy 4014: Union Pacific's 1941 Giant, Back Under Steam
Big Boy No. 4014 is one of 25 4-8-8-4 'Big Boy' articulated steam locomotives that the American Locomotive Company (ALCO) built for Union Pacific. It was delivered in December 1941. Big Boys normally hauled freight between Ogden, Utah, and Cheyenne, Wyoming, across the Wasatch range. No. 4014 made its last revenue run in July 1959 and was retired in December 1961 after 1,031,205 miles. It was then displayed in Pomona, California, until Union Pacific reacquired it in 2013. After a restoration that included converting it from coal to oil, it returned to service in May 2019 and is now the world's largest operating steam locomotive. In 2026 it made a 14-state coast-to-coast America250 tour.
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DID YOU KNOW? The Union Pacific Big Boy No.4014 is the largest operational steam locomotive in the world, and one of only 25 Big Boy locomotives ever built for the Union Pacific Railroad. Constructed in 1941 by the American Locomotive Company, it was designed to haul immense freight trains over the steep grades of the Wasatch Mountains between Utah and Wyoming. The locomotive measures more than 132 feet long, weighs over 1.2 million pounds with its tender, and uses a 4-8-8-4 wheel arrangement that effectively combines two sets of driving wheels under a single boiler. NOW YOU KNOW!
Not So Well: The 1991 Kuwaiti Oil Fires
In early 1991, retreating Iraqi forces set fire to Kuwaiti oil wells. Estimates of the number range from 605 to 732, and the U.S. government counted 610 burning out of 752 damaged wells. At their peak, the fires burned an estimated 4-6 million barrels of oil a day. Firefighting crews from 28 countries began work in April, and the last well was capped on November 6, 1991. Unburned oil formed lakes, estimated at more than 100 to about 300, and the soot and gases degraded regional air quality. Hardened 'tarcrete' crusts and oil-soaked soil left contamination that persisted for decades.
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DID YOU KNOW? During the 1991 Gulf War, retreating Iraqi forces deliberately destroyed or ignited hundreds of oil wells in Kuwait, creating one of the largest man-made environmental disasters in history. The fires generated intense heat, toxic air pollution, and widespread ecological damage affecting soil, wildlife, and regional air quality. NOW YOU KNOW!
Reservoir Ruin: Lake Mead and Lake Powell and a Shrinking Colorado River
Lake Mead (behind Hoover Dam) and Lake Powell (behind Glen Canyon Dam) are the two largest reservoirs in the United States, and both are fed by the Colorado River. The 1922 Colorado River Compact divided the river's water based on early-20th-century flows that later proved unusually wet. After a long drought, the Bureau of Reclamation declared the first-ever Lower Basin shortage in 2021. The 2007 operating guidelines expired at the end of 2026, and in August 2026 Reclamation adopted a new 2027-2036 framework, though the basin states didn't reach consensus. As of October 16, 2026, gauge data put Mead at about 26% full (1,037.43 ft, a record low) and Powell at about 23% full. Deliveries to the Lower Basin states will be cut by 1.25 million acre-feet in 2027.
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DID YOU KNOW? Many of America's major water reservoirs have experienced significant depletion due to prolonged drought, overuse, rising temperatures, and growing demand from cities and agriculture. Lakes such as Lake Mead and Lake Powell, which depend on the Colorado River system, have fallen to historically low levels in recent years, exposing submerged land, reducing hydroelectric power generation, and threatening long-term water availability across the Southwest. Climate change has intensified evaporation, and reduced snowpack in the Rocky Mountains, while decades of water allocation agreements assumed wetter conditions than now exist. NOW YOU KNOW!
The Flock: These Roadside Cameras Log Every Car That Drives By
Flock Safety, an Atlanta company, makes automated license plate reader (ALPR) cameras. Each one snaps still images of passing cars, using infrared at night. Machine learning turns each image into searchable data: the plate, whether full, partial or missing, plus make, color, damage, bumper stickers and roof racks, which Flock calls a 'Vehicle Fingerprint'. It also records time and place. Matches against police hotlists trigger alerts. By the end of August 2026, more than 80% of the 137,000-plus ALPR cameras mapped across the U.S. were Flock's, according to crowdsourced data cited by the Congressional Research Service. That scale, and warrantless searches across agencies, has drawn privacy scrutiny.
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DID YOU KNOW? Flock safety cameras are automated license plate reader, or ALPR systems, used by police departments, neighborhoods, businesses, and municipalities to monitor vehicle traffic and assist in investigations. Mounted on poles or roadside infrastructure, the cameras use infrared imaging and machine vision to capture license plates, vehicle characteristics, and timestamps both day and night. NOW YOU KNOW!
Data Centers: The Internet Lives in Warehouses Full of Humming Servers
Data centers are the buildings where the internet physically lives: racks of servers, storage and network gear, plus the power and cooling plant that keeps them running around the clock. In 2024 they used about 415 TWh of electricity, roughly 1.5% of the world's total, according to the IEA. In the U.S. they used 4.4% in 2023, and that share could reach 6.7–12% by 2028, according to Lawrence Berkeley National Laboratory. AI is the main driver of the growth, and the hottest AI chips now draw more than 1,000 W each, which is pushing operators toward liquid cooling.
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DID YOU KNOW? Modern data centers are large facilities that house thousands of servers, responsible for storing, processing, and transmitting the digital information that powers cloud computing, streaming, artificial intelligence, banking, and much of the internet. Inside, rows of server stacks operate continuously, connected by high-speed networking equipment and supported by extensive cooling and power infrastructure, to prevent overheating and downtime. Data centers often include redundant power supplies, backup generators, battery systems, and multiple internet connections so services remain online even during failures or disasters. As computing demand grows, especially from AI, newer data centers are becoming larger and more energy intensive, driving innovations in liquid cooling, renewable power integration, and high-efficiency chip design. NOW YOU KNOW!
Plitvice Pure: Croatia's Lakes, Dammed by Living Stone
Plitvice Lakes, in Croatia's Dinaric karst, are a chain of lakes linked by waterfalls. The water is supersaturated with calcium carbonate, which settles out with help from mosses, algae and bacteria to build porous tufa (travertine) barriers that dam the lakes. These barriers are the park's UNESCO 'outstanding universal value'. The water is clear and low in nutrients (oligotrophic), and tufa forms only when dissolved organic carbon stays low. Croatia proclaimed Plitvice its first national park on April 8, 1949, UNESCO inscribed it on October 26, 1979, and the park was enlarged in 1997 to just under 300 km².
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DID YOU KNOW? The water in Plitvice Lakes National Park is exceptionally clear, often allowing visibility down several meters to the lake bed. This clarity comes from the region's unique travertine formation process, where mineral-rich water continuously deposits calcium carbonate, naturally filtering out impurities and trapping sediments. NOW YOU KNOW!
This Interceptor Kills Warheads Without Any Explosives (EKV: Exoatmospheric Kill Vehicle)
The Exoatmospheric Kill Vehicle (EKV) is the business end of America's Ground-based Midcourse Defense (GMD) system. A three-stage Ground-Based Interceptor rocket lofts it out of the atmosphere. There it separates, picks out the warhead with a multi-color infrared sensor and its own computers, and steers with divert thrusters into a head-on collision. It carries no explosive warhead. Telling warheads from decoys has always been its hardest problem. A planned replacement kill vehicle was cancelled in 2019, and Lockheed Martin is now building the Next Generation Interceptor.
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DID YOU KNOW? Exoatmospheric kill vehicles, or EKVs, are missile defense interceptors to destroy incoming ballistic missile warheads in space, outside Earth's atmosphere, through direct high-speed collision, rather than explosives. After a ground-based interceptor rocket carries the EKV into space, the kill vehicle separates and uses onboard sensors, guidance computers, and small thrusters to identify and track its target among decoys and debris. NOW YOU KNOW!
Bethlehem Steel: This Steel Mill Helped Build the Golden Gate Bridge
Bethlehem Steel grew out of the Saucona Iron Company, founded in South Bethlehem, Pennsylvania, in 1857. It became Bethlehem Steel Company in 1899 and a corporation in 1904, and was for decades America's second-largest steelmaker. Its wide-flange beams helped make skyscrapers possible. Its steel went into the Golden Gate and George Washington bridges and the Empire State Building. In World War II its shipyards built 1,121 ships, more than any other builder. It went bankrupt in 2001 and was dissolved in 2003.
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DID YOU KNOW? Bethlehem Steel was once one of the largest and most influential steel producers in the United States, founded in the late 19th century and headquartered in Bethlehem, Pennsylvania. The company played a major role in building America's infrastructure, supplying steel for bridges, skyscrapers, railroads, and warships including contributions to projects like the Golden Gate Bridge and much of the US Navy during both World Wars. NOW YOU KNOW!
Vertical Parking II: This Robot Parks 200 Bikes Underground
Giken's ECO Cycle is a robotic bike park buried in a cylinder under the pavement. Above ground there's only a small entrance booth. You push your bike onto a slot and press a button, and a rotating elevator stores it in a ring of racks underground. A standard unit holds about 200 bikes. To get your bike back, you tap an IC card, and it returns in about 13–15 seconds on average. The first unit opened in 1998, and they now sit beside busy stations in Tokyo and other Japanese cities.
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DID YOU KNOW? Automated underground bicycle storage systems are compact, robotic facilities that store bikes vertically beneath the street to save space in dense urban areas. One of the best known examples is the Ecocycle System by Giken Ltd., widely used in cities like Tokyo. Retrieval takes only seconds, with the system automatically selecting and returning the correct bicycle. NOW YOU KNOW!
RoboWeaving: Braiding Fibers Into Soft Robot Muscles
Braiding has been central to soft robotics since the McKibben artificial muscle, an inflatable bladder inside a braided sleeve. When pressurized, the muscle shortens and thickens, and the braid angle sets how far. Researchers have since braided many thin McKibben muscles together into bundles for musculoskeletal robots, 3D-printed braided sleeves, and used braiding with water-soluble fibers to make actuators that twist. Varying the braid pattern along the length lets one structure combine extension, contraction and twist. The footage shows a braiding machine and a braided robotic hand, but the Reel doesn't name the lab or project.
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DID YOU KNOW? 3D braiding in soft tissue robotics is a manufacturing technique that weaves fibers into complex tubular or lattice-like structures to create flexible robot components that mimic the movement and compliance of biological tissues. By interlacing elastic polymers, high-strength fibers, or pneumatic channels in three dimensions, engineers can precisely control how the structure bends, twists, contracts, or expands under pressure. NOW YOU KNOW!
Stomata: The Tiny Pores That Let Leaves Trade Gases
Stomata are microscopic pores, each bordered by a pair of guard cells, that control a plant's intake of carbon dioxide and its loss of water vapor. Guard cells open the pore by taking up ions and water and swelling, and they close it when they lose turgor, for example in response to the drought hormone abscisic acid (ABA). Open stomata cover only about 5% of the leaf surface, but they're the main route of water loss (transpiration). Stomatal behavior shapes the global water and carbon cycles, and stomata appear in fossils from about 400 million years ago.
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DID YOU KNOW? A plant stoma is a tiny pore found primarily on the surface of leaves and stems that regulates gas exchange between the plant and its environment. Each stoma is flanked by two specialized guard cells that can open or close the pore in response to light, humidity, and carbon dioxide levels. When open, stomata allow carbon dioxide to enter for photosynthesis and release oxygen as a byproduct. NOW YOU KNOW!
2026: Was Metropolis Set in 2026?
Metropolis, the German silent science-fiction film directed by Fritz Lang and written by Thea von Harbou, premiered in Berlin on January 10, 1927. Its city is split between a privileged elite above ground and workers who live and labor below. The year 2026 doesn't appear in the film. Von Harbou's novel says the story happens 'at no particular place or time'. The date comes from the 1963 Ace Books paperback, whose title page reads 'The World of 2026 A.D.' It was repeated in later writing on the film and in Giorgio Moroder's 1984 re-scored version. Film historians Lotte Eisner and Paul M. Jensen placed it around 2000 instead. Footage long thought lost was found in Buenos Aires in 2008 and restored for a 2010 re-release.
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DID YOU KNOW? In Fritz Lang's 1927 film Metropolis, the year 2026 is envisioned as a starkly divided future city, dominated by colossal skyscrapers, elevated highways, and massive machines that power society. The city is split vertically and socially: the wealthy elite live in towering structures filled with light, leisure, and technology, while workers toil underground in harsh mechanized conditions.
Atomic Annie: The Only Cannon Ever to Fire a Nuclear Shell (Grable Test, 1953)
In the Grable test (May 25, 1953, Nevada), the 83-ton M65 Atomic Cannon fired the only nuclear artillery shell in history.
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Did you know? The Grable test was a historic U.S. nuclear weapons test conducted in 1953 during Operation Upshot-Knothole, notable for being the only time a nuclear weapon was fired from a cannon. The device was launched by Atomic Annie, an enormous 280 mm artillery gun, which fired a nuclear shell roughly seven miles before it detonated in the air with a yield of about 15 kilotons, similar to the Hiroshima bomb. Now you know!
Air Jordan: Takeoff From the Free-Throw Line
Michael Jordan won the NBA Slam Dunk Contest in 1987 and again on February 6, 1988, at Chicago Stadium. In 1988, he closed with a dunk from the free-throw line that earned a perfect 50 and edged out Dominique Wilkins, a result that's still debated. The dunk wasn't new. Julius Erving won the first-ever dunk contest, at the 1976 ABA All-Star Game, with a free-throw-line dunk, and Jordan had tried one in the 1985 contest. Both Jordan and Erving have said Erving suggested the 1988 attempt from the stands. 'Air Jordan' was also the name of Nike's Jordan signature shoe, launched in 1985.
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DID YOU KNOW? Michael Jordan's iconic free throw line dunk, first performed during the 1988 NBA Slam Dunk Contest, became one of the most famous moments in basketball history. Taking off just inside the free throw line, Jordan used his speed, hang time, and explosive leg power to glide through the air before slamming the ball home, making the leap look almost effortless. NOW YOU KNOW!
Eye of the Storm: Calm Skies, Wild Seas
NOAA describes a hurricane's eye as a relatively calm, generally clear area of sinking air, typically 20 to 40 miles across, where winds usually stay under 15 mph. An eye usually forms once sustained winds pass 74 mph. Air flowing out of the top of the eyewall partly turns inward and sinks, warming and drying as it falls, which clears the clouds. The calm doesn't reach the sea, though. The National Hurricane Center's mariner's guide warns that in the eye of a strong storm, seas are near their maximum height and come from several directions, which can produce rogue waves. Eyes vary a lot in size. In 2005, Air Force reconnaissance found Hurricane Wilma's eye had shrunk to about 2 nautical miles across.
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DID YOU KNOW? The eye of a hurricane is a calm, low pressure region at the center of the storm, typically ranging from 20 - 40 miles in diameter. Within the eye winds are relatively light, skies can be partly clear, and the sea surface is often much calmer than in the surrounding storm. This serene center is surrounded by the eyewall, a ring of towering thunderstorms where the most violent winds, intense rainfall, and severe turbulence occur.
Gassed Up...Way Up: Filling up Mid-Flight
Aerial refueling moves fuel from a tanker to another aircraft in flight. The first successful transfer took place on June 27, 1923, over Rockwell Field in San Diego. Two US Army Air Service DH-4B biplanes used a 50-foot hose to pass about 75 gallons, according to the National Museum of the US Air Force. Today there are two main methods. With probe and drogue, the tanker trails a hose ending in a basket and the receiver flies its probe into it. The US Navy, the Marine Corps, many allied air forces and helicopters use this method. With the flying boom, a boom operator on the tanker steers a rigid telescoping tube into a receptacle on the receiver. That's the standard for US Air Force aircraft. Some tankers carry both.
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DID YOU KNOW? Air-to-air refueling, also called aerial refueling, is the process of transferring fuel from one aircraft to another while both are in flight, extending the range and endurance of military planes. This is typically done using either a probe and drogue system, where a flexible hose with a basket is trailed by the tanker aircraft and connected to a probe on the receiving plane, or a flying boom system where a rigid telescoping tube is guided into a receptacle on the receiving aircraft. The operation requires precise coordination and steady flying, as both aircraft must maintain close formation at high speeds. NOW YOU KNOW!
Inside a Eukaryotic Cell: What Each Organelle Does
Your cells are packed with tiny organs: a tour of the specialized organelles inside every eukaryotic cell.
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Did you know? Eukaryotic cells contain a variety of specialized organelles each performing distinct functions that keep the cell alive and functioning. The nucleus houses the cell's DNA and controls gene expression. Endoplasmic reticulum, or ER, comes in rough and smooth forms, synthesizing proteins and lipids respectively. The Golgi apparatus modifies, sorts, and ships these molecules, while mitochondria generate energy through cellular respiration. Lysosomes and peroxisomes break down waste and detoxify harmful substances, while ribosomes assemble proteins. Now you know!
Ford Probe IV: The 1983 Concept Car With a 0.15 Drag Coefficient
Ford's 1983 Probe IV concept car (built with Ghia) had a drag coefficient of about 0.15.
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Did you know? The 1983 Ford Probe IV was a radical concept car created to showcase futuristic automotive design and advanced aerodynamics. Built using lightweight materials and a smooth, wide tunnel-shaped body, it achieved an extremely low drag coefficient for its time, emphasizing fuel efficiency during an era of rising energy concerns. Now you know!
Marangoni Motion: Surface Tension Can Make Liquid Pull Itself Across a Surface
When surface tension varies across a liquid, the stronger-pulling (higher-tension) region drags the surface toward itself. Fluid then streams from low surface tension to high. This is the Marangoni effect, named after Carlo Marangoni, who published on it in 1865. James Thomson first explained it in 1855 using 'tears of wine'. It's why a drop of soap or alcohol makes water rush away, why wine climbs the glass, and why sulfur traces change the shape of a weld pool. Chip makers use it to dry silicon wafers without spots.
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DID YOU KNOW? The Marangoni effect is a physical phenomenon where fluid flows from areas of low surface tension to areas of high surface tension. This movement happens because liquids naturally try to minimize surface energy, causing the fluid to pull itself along the surface. The Marangoni effect plays an important role in processes like welding, coating, bubble formation, and even biological systems. NOW YOU KNOW!
Offshore Oil: Some Oil Rigs Stand on Legs, Others Float
Offshore oil and gas uses two kinds of structures. Fixed platforms are steel jackets pinned to the seabed with piles, compliant towers, and similar designs that sit over a field for decades. Mobile offshore drilling units (MODUs) move from well to well. Jack-ups stand on legs lowered to the seabed in water up to about 450 ft. Semi-submersibles float on flooded pontoons and are held by anchors or thrusters, and drillships work in 2,000–10,000 ft of water using dynamic positioning. The Reel's own footage shows red-hulled jack-ups bridged to production platforms, a type it never names.
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DID YOU KNOW? Oil rigs are large industrial structures used to drill for and extract petroleum and natural gas from beneath the Earth's surface, often in challenging environments like deep oceans or remote land areas. Offshore rigs range from fixed platforms anchored to the seabed, to floating systems like semi-submersibles and drill ships, that can operate in deep water while maintaining position with anchors or dynamic positioning systems. NOW YOU KNOW!
Guizhou Solar: In Guizhou, Solar Panels Cover Whole Mountains
Guizhou, in southwest China, is a land of karst peaks. Its thin soils erode easily, leaving bare rock, a problem known as 'rocky desertification'. Since the 2010s the province has covered those barren hills with solar panels. The first gigawatt-scale base, at Guanling, connected its first 1,050 MW phase to the grid on December 29, 2023, on about 20,000 mu (roughly 1,300 hectares) of deeply desertified land. Puding followed with a 600 MW project in 2025. Many sites are 'agrivoltaic': chilies, herbs, taro and vegetables grow in the shade beneath the panels.
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DID YOU KNOW? In the mountainous province of Guizhou vast solar farms have been built directly across steep, rocky hillsides, creating the surreal appearance of entire mountains wrapped in photovoltaic panels. These installations take advantage of land that was previously considered poor for agriculture due to thin soil, erosion, and harsh terrain. NOW YOU KNOW!
The Line: Saudi Arabia's Planned 170-km City Stopped After 2.4 km of Foundations
The Line was announced by Crown Prince Mohammed bin Salman in January 2021 as the centerpiece of NEOM in Saudi Arabia's Tabuk Province. It was pitched as two mirrored skyscrapers 500 m tall and 200 m apart, running 170 km from the Red Sea coast into the mountains. The plan promised 9 million residents, no cars or streets, and an underground train covering the full length in 20 minutes. Reality fell far short. Costs ballooned, and the first phase was cut to about 2.4 km. Construction was suspended in September 2025 with only foundation work done, and in May 2026 Semafor reported the project was on hold until after 2030.
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DID YOU KNOW? Saudi Arabia's The Line is a proposed futuristic city within NEOM, in the Tabuk region. It is designed as a 170-km-long, ultra-narrow urban corridor enclosed by mirrored walls, and built to house up to 9 million people. The concept eliminates cars and roads, relying instead on high-speed underground transit that could move residents from one end to the other in about 20 minutes. NOW YOU KNOW!
USS Gerald R. Ford: Launching Jets Without Steam
USS Gerald R. Ford (CVN-78) is the lead ship of the US Navy's newest class of nuclear-powered aircraft carriers. It was delivered on May 31, 2017, and commissioned on July 22, 2017, at Naval Station Norfolk. According to the Congressional Research Service, its two A1B reactors give it about three times the electrical generating capacity of a Nimitz-class carrier. The class is designed for a sortie rate about 33% higher than the Nimitz class, with about 700 fewer shipboard crew. New systems include EMALS electromagnetic catapults, Advanced Arresting Gear and electromagnetic weapons elevators. Pentagon testers and the GAO have reported reliability problems and delays with several of them. The ship's first full deployment came in 2023.
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DID YOU KNOW? The USS Gerald R. Ford is the lead ship of the Gerald R. Ford class aircraft carrier, representing the newest generation of American nuclear-powered aircraft carriers. Commissioned in 2017 and named after US President Gerald R. Ford, the ship introduced several major technological upgrades compared with earlier carriers like the Nimitz class aircraft carrier. These include the Electromagnetic Aircraft Launch System, or EMALS, advanced arresting gear for landings, a redesigned flight deck for higher sortie rates, and improved nuclear reactors that generate far more electrical power for future systems.
Resting Rosie: A Great White Kept in a Tank for 20 Years
Rosie is a preserved great white shark, about 5 m long, now on show at Crystal World Exhibition Centre in Devon Meadows, Victoria, Australia. She was caught in tuna nets off South Australia in 1997 or 1998 (sources differ) and couldn't be freed. She was then preserved whole in formaldehyde at Wildlife Wonderland, a park in Bass, Victoria. When that park closed in 2012, she was left behind in a shed. Late in 2018, urban explorer Luke McPherson's video of her went viral. Trespassers followed and damaged the tank, which let toxic formaldehyde escape. Crystal World's owner, Tom Kapitany, took her on, and she was craned out and moved on February 21, 2019. Her formaldehyde has since been replaced with glycerol.
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DID YOU KNOW? "Rosie" the Shark is the nickname given to a remarkably well-preserved great white shark specimen displayed at Crystal World Exhibition Centre. The shark was caught in 1998 and preserved in a large tank of formaldehyde solution, where it remained largely unnoticed for years. After the exhibition center closed, urban explorers rediscovered Rosie in 2018. NOW YOU KNOW!
B52 Stratofortress: Built in the 1950s, Flying Into the 2050s
The Boeing B-52 Stratofortress first flew on April 15, 1952, and entered US Air Force service in 1955. Boeing built 744, and the last B-52H was delivered in 1962. Only the B-52H model is still flying. The Air Force fact sheet lists a payload of about 70,000 lb of mixed weapons and a 185 ft wingspan, with eight engines in four paired pods. It was built for high-altitude nuclear missions and was later adapted for low-level flight, conventional bombing and cruise missiles. Under the Commercial Engine Replacement Program, the Air Force plans to fit Rolls-Royce F130 engines and a new radar, rename the aircraft the B-52J and keep it in service into the 2050s. On June 15, 2026, a B-52H radar test aircraft crashed on takeoff at Edwards Air Force Base, killing all eight crew members. As of July 2026, the cause was under investigation.
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DID YOU KNOW? The Boeing B52 Stratofortress is a long range strategic bomber operated by the United States Air Force, first entering service in 1955 during the Cold War. Designed for high-altitude nuclear deterrence missions, the B52 evolved into one of the most versatile bombers ever built, capable of carrying an enormous payload of conventional bombs, precision guided munitions, and cruise missiles. Its distinctive design features swept wings and eight jet engines mounted in four twin pods under the wings. NOW YOU KNOW!
Lingshan Lift: 1,236 m of Escalator
The Reel mixes up two different Lingshans. The footage shows the new cliffside escalator at Lingshan Scenic Area in Shangrao, Jiangxi Province, a national 4A scenic area of granite peaks whose highest point, Tianti Peak, reaches 1,496 m. According to the scenic area as reported by Chinese media, the escalator line is 1,236 m long with a vertical rise of about 256 m, built as 10 sections in 5 groups. It can carry about 3,600 people per hour each way, turning a climb of 3-4 hours on foot into about 30 minutes. It went into trial operation in August 2025, and international outlets reported it open in October 2025. The 'Grand Buddha at Lingshan' and Taihu Lake belong to a different place: the Lingshan Scenic Area in Wuxi, Jiangsu Province, where an 88 m bronze Buddha completed in the 1990s stands on the north shore of Lake Tai. The escalator in the footage doesn't serve that Buddha or overlook Taihu Lake.
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DID YOU KNOW? The outdoor escalator at Lingshan Scenic Area is a long series of open-air escalators built into the hillside to help visitors reach the upper terraces of the mountain complex without a steep climb. Installed to accommodate the large number of tourists visiting the famous Grand Buddha at Lingshan, the escalators carry passengers upward through landscaped gardens and temple structures while offering views over the Taihu Lake and the surrounding hills. NOW YOU KNOW!
Ali Khamenei: Ali Khamenei, Iran's Supreme Leader for 37 Years
Ali Khamenei was born on April 19, 1939, in Mashhad and studied at the seminary in Qom, including under Ruhollah Khomeini. From 1963 he took part in protests against the monarchy and was imprisoned several times. After the 1979 revolution he sat on the Revolutionary Council, served as deputy defense minister and was elected president in 1981, a largely ceremonial post at the time; he was reelected in 1985. When Khomeini died in June 1989, the Assembly of Experts chose Khamenei as leader, and a referendum that July loosened the office's clerical qualifications. He held the post for 37 years. On Feb. 28, 2026, he was killed in the opening U.S.-Israeli strikes of the 2026 war with Iran. The Assembly of Experts named his son Mojtaba Khamenei supreme leader on March 8, 2026.
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DID YOU KNOW? Ali Khamenei was an Iranian cleric and political leader who served as the Supreme Leader of the Islamic Republic of Iran from 1989 until his death in 2026. Born in 1939 in Mashhad, he studied Shiʿa Islamic theology in Qom and became involved in the revolutionary movement led by Ruhollah Khomeini against the Shah of Iran. After the Iranian Revolution, Khamenei rose through the new government, serving as Iran's president from 1981 to 1989 before being appointed Supreme Leader. NOW YOU KNOW!
Mount Bokty: A Mountain Layered Like a Pie
Bokty is an isolated, trapezoid-shaped remnant mountain (an inselberg) in Kazakhstan's Mangystau region, about 90 km from Zhanaozen. It's protected within the Mangystau State Historical and Cultural Reserve. Local tourism sources say it stands 165 m high and that its name means 'pie' in Kazakh, after its cake-like layers. The bands are marine sediments laid down on an ancient sea floor and later carved by wind and water. The white layers are chalk, and the red and brown ones are colored by iron. Nearby, the Kyzylkup tract shows the same striping and is nicknamed 'Tiramisu'. The mountain looks like an upturned boat from one side and a striped pyramid from another, and it appears on Kazakhstan's 1,000-tenge banknote.
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DID YOU KNOW? Mount Bokty is a striking geological formation located in the Mangystau region of western Kazakhstan, near the edge of the Ustyurt Plateau. Rising abruptly from the surrounding desert landscape, the mountain is known for its layered rock bands that create vivid horizontal stripes of white, orange, and reddish-brown sediment.
Battling Barnacles: Hitchhikers That Burn Fuel
Barnacles are crustaceans that cement themselves to hard surfaces, including ship hulls, as part of 'biofouling' along with slime, algae and other organisms. A 2007 study by Michael Schultz of the US Naval Academy, modeling a mid-sized naval frigate, predicted that heavy calcareous fouling such as barnacles and tubeworms raises the shaft power needed at cruising speed by up to 86%. Even slime films brought significant penalties. Hulls are protected with antifouling coatings and cleaned in dry dock or in the water by divers and robots. In-water cleaning has its own risks. The IMO's 2023 Biofouling Guidelines warn it can damage coatings and release invasive species and toxic coating debris. They say heavier fouling should be removed with systems that capture the debris.
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DID YOU KNOW? Cleaning barnacles off ships is an important maintenance process because these hard-shelled marine organisms attach firmly to hulls and dramatically increase drag as a vessel moves through water. Even a thin layer of barnacles can raise fuel consumption by 20% or more by disrupting smooth water flow along the hull. Increasingly, specialized underwater cleaning robots and divers perform the work while the ship remains in port, using rotating brushes or high-pressure jets to strip away barnacles, algae, and other fouling organisms. NOW YOU KNOW!
The White Temple: Thailand's White Temple Is an Artist's Work in Progress
Wat Rong Khun, the White Temple, stands about 15 km south of Chiang Rai in northern Thailand. In 1997 the Chiang Rai artist Chalermchai Kositpipat set out to rebuild a run-down local temple entirely at his own expense, and he's still building. White plaster stands for the Buddha's purity, and thousands of mirror chips for the Buddha's wisdom. To reach the white ordination hall (ubosot), visitors cross the 'bridge of the cycle of rebirth' over a pit of hundreds of reaching stucco hands representing desire and suffering. Inside, murals mix flames and demons with Neo, Superman and a Terminator. The site survived a 2014 earthquake, and the nine-building plan may not be finished until about 2070.
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DID YOU KNOW? The Wat Rong Khun is a striking contemporary Buddhist temple in Chiang Rai, famous for its brilliant white exterior and intricate, surreal ornamentation. Construction began in 1997 as a symbolic representation of purity and enlightenment, with the white surfaces representing the Buddha's purity and mirrored glass fragments reflecting wisdom shining across the world. Visitors approach the main hall by crossing a bridge over a pit of sculpted hands reaching upward, symbolizing human suffering and desire before enlightenment. NOW YOU KNOW!
Supersonic Striker: The B-1 Was Built to Carry Nukes but Now Flies Conventional Only
The B-1 began as the Mach 2 B-1A, which was canceled in 1977. It was revived in 1981 as the B-1B, a stealthier and heavier interim bomber, while the B-2 was delayed. Rockwell delivered all 100 B-1Bs between 1985 and 1988, and the type reached initial operating capability on nuclear alert in October 1986. Its wings sweep from 15° (137 ft span) back to 67.5° (79 ft). Top speed is about Mach 1.2. The U.S. dropped the B-1's nuclear mission in 1994, and its nuclear hardware was stripped out by March 2011 under New START, with Russian inspectors verifying it. Today it's a conventional-only bomber, nicknamed the 'Bone'.
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DID YOU KNOW? The Rockwell B-1 Lancer is a long-range, supersonic strategic bomber developed for the United States Air Force during the Cold War. Entering service in the 1980s, the B-1B variant features variable-sweep wings that can pivot backward for high-speed flight or extend outward for better lift and fuel efficiency during takeoff and cruising. Designed originally to deliver nuclear weapons, it was later converted primarily for conventional missions. NOW YOU KNOW!
Tilted Town: This Mexican Village Is Built on a Tilt to Fool Your Balance
At Xenses, a Grupo Xcaret park just south of Playa del Carmen on Mexico's Riviera Maya, 'El Pueblo' (nicknamed the Pueblito al Revés, or Upside-Down Town) is a walk-through tilted-house illusion. It looks like a classic Mexican village, but the whole street sits on a pronounced slope, and the houses, doors and windows are built square to a false horizon instead of true vertical. Your eyes trust the buildings, your inner ear feels the real slope, and the conflict makes you stagger. Psychologists studying 'mystery spots' have found that vision usually wins this tug-of-war over the vestibular sense.
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DID YOU KNOW? The tilted town at Xenses Park, near Cancun, is part of the park's village attraction, designed as a full scale optical illusion experience. The buildings are constructed at sharp angles, while the pathway itself is subtly sloped, creating a powerful sensory mismatch that makes visitors feel like they're losing balance even though they're standing upright. Because the human brain relies heavily on visual cues to determine orientation, the distorted architecture tricks your sense of gravity and equilibrium. NOW YOU KNOW!
Winter in Harbin: Every Winter, Harbin Builds a City Out of River Ice
Harbin, the 'Ice City' of China's northeast, began its modern ice festival on January 5, 1985. Its roots go back to a 1963 ice-lantern show and Qing-dynasty lanterns made from blocks of river ice. Each December, workers saw blocks two to three feet thick out of the frozen Songhua River. Sculptors then turn them into palaces, landmark replicas and LED-lit castles. The centerpiece, Harbin Ice and Snow World, opened in 1999, is rebuilt from scratch every year, and holds a Guinness record as the world's largest ice-and-snow theme park.
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DID YOU KNOW? The Harbin International Ice & Snow Sculpture Festival is one of the largest and most spectacular winter festivals in the world. Typically running from early January through February, the festival transforms the city into a vast display of illuminated ice palaces, towering snow sculptures, and intricate replicas of famous landmarks carved from enormous blocks of ice cut from the nearby Songhua River. NOW YOU KNOW!
The Caracal's Ear: About 20 Muscles Steer Each of a Caracal's Ears
The caracal, a medium-sized wild cat of Africa, the Middle East and Central Asia, gets its name from the Turkish 'karakulak', meaning 'black ears'. Each tall, black-tufted ear is moved by about 20 muscles in three groups (humans have six), so the two ears can swivel and tilt independently like satellite dishes. Cats in general can turn their outer ears through about 180° and hear high-frequency sounds well beyond human range, including the squeaks and rustles of rodents. Caracals are opportunistic hunters of rodents, birds, hyraxes and even small monkeys. The ear tufts may help funnel sound, but they're most often thought to signal to other caracals.
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DID YOU KNOW? A caracal's ears are supported by an intricate network of small, highly developed muscles that allow exceptionally precise and independent movement. Each ear can rotate nearly 180°, thanks to strong auricular muscles that adjust angle, tilt, and tension in real time. This mobility lets the caracal pinpoint faint, high-frequency sounds, such as rodents moving under grass. NOW YOU KNOW!
The Chronicles of Georgia: Georgia's 'Stonehenge' Is 16 Bronze Pillars up to 35 Meters Tall
On Keeni Hill at the north edge of Tbilisi, above the Tbilisi Sea reservoir, stand 16 bronze-clad pillars 30 to 35 meters tall. Sculptor Zurab Tsereteli began the Chronicle of Georgia (Sakartvelos Matiane) in 1985. Work dragged on through the Soviet collapse until 2003, and the monument was never fully finished. The upper sections show kings, queens and heroes of Georgian history, and the lower sections tell the life of Christ. The hilltop had once been earmarked for a 100-meter statue of Stalin.
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DID YOU KNOW? The Chronicles of Georgia is a monumental sculptural complex overlooking the Tbilisi sea, created in 1985 by Georgian artist Zurab Tsereteli. Often called "Georgia's Stonehenge," the site features massive pillars rising roughly 30-35 meters high, carved with dramatic reliefs that depict scenes from Georgian history, royal figures, and Christian iconography. NOW YOU KNOW!
Ekranoplan: Too Low to Be a Plane
The Project 903 Lun was a Soviet wing-in-ground-effect craft from Rostislav Alexeyev's design bureau, built as a fast anti-ship missile carrier. Only one, MD-160, was completed. It was about 73.8 m long with a 44 m wingspan, weighed about 380 tonnes at takeoff, and carried six P-270 Moskit (SS-N-22) anti-ship missiles in pairs on its back. Eight Kuznetsov NK-87 turbofans on forward pylons blew air under the wings for takeoff. Published maximum speeds are about 500 to 550 km/h (about 310 to 340 mph). A CIA assessment quoted by The Aviationist gave about 250 knots. It entered trial service in the late 1980s or 1990, sources vary, and sat unused at Kaspiysk from the late 1990s. On July 31, 2020, it was towed to Derbent, Dagestan, for a planned Patriot Park display.
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DID YOU KNOW? The Lun-class ekranoplan was a Soviet ground-effect vehicle developed during the Cold War, designed to fly just meters above the surface of the sea by exploiting the aerodynamic "ground effect" that boosts lift and reduces drag. Powered by eight turbofan engines mounted on its nose, the Lun could reach speeds of around 300 mph while skimming over water, making it faster than ships and harder to detect by radar.
Three Whale Rock: Whales in a Sea of Forest
Hin Sam Wan ('Three Whale Rock') is a group of sandstone outcrops on a cliff edge in the Phu Sing National Reserved Forest, Bueng Kan province, near the Mekong River and the border with Laos. Seen from above, the three elongated rocks look like a whale family: father, mother and calf. Tourism sources and Wikipedia call the formation 75 million years old. A geology write-up identifies the rock as quartz-rich sandstone of the Phu Phan Formation, laid down by rivers in the Early Cretaceous, about 125 to 113 million years ago. It suggests the 75-million figure more likely reflects later uplift and exposure. Only two of the 'whales' can be reached on foot, and the 'baby' can't. The Tourism Authority of Thailand singles out early-winter sunrises, especially in November.
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DID YOU KNOW? Three Whale Rock is a striking natural rock formation located in Phu Sing Forest Park in northeastern Thailand, near the border with Laos. The site consists of three enormous sandstone boulders aligned along a ridge, resembling a family of whales swimming side by side when viewed from above. Formed through millions of years of erosion and geological uplift, the rocks sit atop a forested mountain, offering panoramic views of misty hills and the Mekong River basin. Visitors can hike up to walk across the broad, smooth surfaces of the rocks, especially popular at sunrise when the landscape is bathed in golden light.
New York Hot Tub: Where City Snow Goes to Melt
After the January 25, 2026 winter storm and days of below-freezing temperatures, the NYC Department of Sanitation (DSNY) started eight snow melters on January 27, 2026, its first use of them since 2021. Officials call the machines 'hot tubs'. Dump trucks haul piled snow to fixed melter sites in all five boroughs, where front-end loaders tip it in half-ton buckets into heated water. DSNY says each machine melts 60 to 120 tons an hour. The water is kept at about 38 °F, enough to melt snow while controlling flow, and drains into sewers the city's Department of Environmental Protection approved. In DSNY's own words: 'We bring snow to the melters – NOT the melters to the snow.'
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DID YOU KNOW? New York City has used large mobile snow melters, essentially giant heated tubs mounted on trucks, to dispose of large snow accumulations after major winter storms. Instead of hauling snow to distant dumping sites, sanitation crews load it into these melters, where diesel burners heat water inside the unit and rapidly melt the snow into runoff that is filtered and discharged into the sewer system. NOW YOU KNOW!
Torque Conversion: How an Automatic Moves Without a Clutch Pedal
A torque converter sits between the engine and an automatic transmission and lets the car idle in gear without stalling. The engine-driven impeller (pump) flings automatic transmission fluid outward into the turbine, which turns the transmission input shaft. The stator sits between them on a one-way clutch. When the turbine is turning much slower than the impeller, as when pulling away from a stop, the stator turns the returning fluid so it helps the impeller instead of fighting it. That multiplies torque by up to about 2.5:1 at stall. As speeds even out, the stator freewheels and the unit acts like a plain fluid coupling. Because constant slip wastes energy as heat, virtually all modern automotive converters add a lock-up clutch that mechanically joins the impeller and turbine at cruise.
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DID YOU KNOW? A torque converter is a fluid coupling used in automatic transmissions that transfers and multiplies engine torque to the transmission using hydraulic force instead of a mechanical clutch. It consists of three main components: the impeller, which is connected to the engine and pushes transmission fluid outward; the turbine, which receives that fluid and spins the transmission input shaft; and the stator, which redirects returning fluid to increase efficiency and provide torque multiplication at low speeds. NOW YOU KNOW!
Grass Skiing: Skiing Without Snow
Grass skiing was invented in Germany by Josef Kaiser of Geislingen an der Steige; sources date it between 1960 and 1966. It began as summer training for alpine skiers. Grass skis run on tracks of small rollers, about 192 rolls in a typical pair. A European Cup started in 1971 and European Championships in 1976, and the first World Championships were held in 1979 at Bryce Resort in Virginia. The International Grass Ski Federation ran the World Championships until 1985, when the International Ski Federation (FIS) took over the sport and the federation dissolved. The sport is still raced under FIS today, with a World Cup since 2000.
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DID YOU KNOW? In the 1980s summer grass skiing gained popularity in parts of Europe as a warm weather alternative to traditional snow skiing. Instead of skis sliding on snow, athletes used specialized skis fitted with small rolling tracks or wheels that allowed them to glide over short, well-kept grass slopes. The sport was especially active in countries like Austria, Germany, and Italy, where competitive events and even world championships were held under the International Grass Ski Federation. NOW YOU KNOW!
Shark Senescence: Born Before the US Existed
The Greenland shark (Somniosus microcephalus) lives in the cold, deep North Atlantic and Arctic. In 2016, Julius Nielsen and colleagues dated proteins in the core of the eye lens of 28 female sharks. Those proteins form before birth and aren't replaced. The team used radiocarbon, including the 'bomb pulse' from 1950s-60s nuclear tests, to estimate ages. The largest shark, 502 cm long, came out at 392 ± 120 years, which puts its likely age between 272 and 512 years. That makes the Greenland shark the longest-lived vertebrate known. The study also estimated that females reach sexual maturity at about 156 ± 22 years. Sharks like this grow only about 1 cm a year in near-freezing water.
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DID YOU KNOW? The Greenland shark is one of the most extraordinary long-lived animals on Earth, holding the record for the longest lifespan of any known vertebrate. Scientific studies using radiocarbon dating of proteins in the shark's eye lenses estimate that these slow-growing sharks can live at least 272 years, and possibly more than 500 years, with individual age estimates often centered around roughly 400 years for the largest specimens. NOW YOU KNOW!
HoloFans II: Floating Figures, Spinning Blades
'Hologram fans' are persistence-of-vision (POV) displays. A rotor carrying strips of LEDs spins fast while a controller switches each LED on and off at exact angles, painting one slice of the picture at a time. Because the eye blends these rapid flashes, the viewer sees a steady image that seems to float, especially against a dark background where the blur of the blades disappears. They aren't holograms in the physics sense. True holography records and rebuilds light waves using interference, usually with lasers. A fan draws a flat (2D) image, and the 3D look comes from the artwork's shading and the invisible frame. HYPERVSN, the brand formerly known as Kino-mo, describes its units as four LED rays spinning at about 670 rpm, and several units can be synced into a larger 'wall'.
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DID YOU KNOW? Persistence of vision hologram fans are display devices that create the illusion of floating 3D images by rapidly spinning LED-equipped blades in a circular pattern. As the blades rotate at high speed, individual LEDs switch on and off in precise sequences, and because the human eye briefly retains visual information, known as "persistence of vision", the flashes blend together into a continuous image suspended in midair. NOW YOU KNOW!
Drone De-Icing: Ice-Breakers With Propellers
Ice on power lines adds weight and can snap conductors or topple towers, as China's grid saw in the severe winter storms of early 2008. In January and February 2026, State Grid units in several Chinese provinces publicized drone-based de-icing during cold waves. In Shanxi, drones carrying insulating rods knocked ice off ultra-high-voltage lines (Xinhua). In Zhejiang, a DJI FC30 heavy-lift drone placed a robot on an overhead ground wire, where it broke ice by impact, knocking and rolling (China Daily). In Hubei, a 'flying de-icing robot' used vibration plus rotating blades on a ±800 kV line (ChinaNews). In Anhui, a drone-placed robot cleared about 20 m of iced wire in about a minute (CGTN). Utilities say the methods reduce the need for crews to climb towers or knock ice off by hand.
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DID YOU KNOW? Drones are increasingly being used to remove ice buildup from power lines in cold climates, reducing the need for risky helicopter operations or manual climbing. In these systems, heavy lift or specialized utility drones fly along transmission lines equipped with tools such as spinning rods, vibrating devices, or directed airflow systems that shake or break accumulated ice loose. NOW YOU KNOW!
Liquid Lights: Why Salt Water Conducts and Pure Water Barely Does
A liquid's electrical conductivity depends on how many ions it holds and how fast they move. Perfectly pure water isn't ion-free: it splits slightly into hydrogen and hydroxide ions, about 10⁻⁷ mol/L of each at 25 °C, which gives a theoretical conductivity of 0.055 µS/cm. Water left open to air absorbs carbon dioxide, which raises that to about 1 µS/cm. Strong electrolytes such as table salt, hydrochloric acid and sodium hydroxide split completely into ions and conduct well. Weak ones such as acetic acid and ammonia split only partly and conduct far less. Seawater conducts about a million times better than ultrapure water.
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DID YOU KNOW? Fluid-based conductivity refers to the ability of a liquid to conduct electricity, which depends on the presence and mobility of charged particles within it. In most cases, pure liquids like distilled water conduct very poorly because they lack free ions, while fluids containing dissolved salts, acids, or bases conduct well because they contain mobile positive and negative ions. NOW YOU KNOW!
Dipping Dipper: This Songbird Walks Along the Bottom of Rushing Streams
The white-throated dipper (Cinclus cinclus) is Britain's only aquatic songbird, and its family, the dippers (Cinclidae), are the only passerines that feed underwater. A dipper walks down a rock into a fast stream, clamps onto the bed with long legs and sharp claws, and uses short, strong wings as flippers to push itself down against the current. Solid bones cut its buoyancy. An oversized preen gland waterproofs about 3,300 feathers, roughly twice a blackbird's count, and nasal flaps keep water out. Its blood carries extra hemoglobin, and its heart rate drops as it dives. It hunts mostly mayfly, stonefly and caddisfly larvae under the stones.
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DID YOU KNOW? The White-throated dipper is a remarkable songbird known for its ability to walk underwater in fast-moving streams. Unlike most birds that float, the dipper grips rocks with strong toes and uses partially open wings to "fly" against the current beneath the surface. Its dense plumage traps air for insulation, while a high metabolic rate and extra oxygen-carrying capacity in its blood help it withstand cold, rushing water. NOW YOU KNOW!
Haus Des Glockenspiels: Bells Made of Porcelain
The Haus des Glockenspiels (Glockenspiel House) is at Böttcherstraße 4 in Bremen, northern Germany, not in Rothenburg ob der Tauber. Coffee merchant Ludwig Roselius, who first marketed decaffeinated coffee, had two old warehouses there rebuilt in 1922 as offices for a bank, with gabled red-brick facades. In 1934 a carillon of 30 Meissen porcelain bells was hung between the gables. While the bells play sea shanties and folk songs, a tower beside them turns to show 10 carved wooden panels. They depict people who crossed the ocean by sea or air, including Columbus, Lindbergh, and Zeppelin and Eckener. They're carved panels, not life-sized moving figures, and they don't show local history. The bells play at noon, 3 pm and 6 pm from January to March, and hourly from noon to 6 pm from April to December, except in frost.
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DID YOU KNOW? The Haus des Glockenspiels is a historic building located in the town of Rothenburg ob der Tauber, Germany, famous for its elaborate glockenspiel, a mechanical carillon that performs daily shows. The building's clock tower features life-sized figurines that move and reenact scenes from the town's history, such as festivals, local legends, or traditional trades. NOW YOU KNOW!
Water Forest Park: This Forest Grows Straight Out of a Lake
At the north end of Qingshan Lake (Qingshanhu) in Hangzhou's Lin'an District, about 10,000 cypress trees stand with roughly two meters of their trunks underwater. The stand covers about 50,000 square meters, and the trees are pond cypress and bald cypress introduced from North America. Visitors walk boardwalks or paddle kayaks between the trunks. In summer, duckweed turns the water bright 'matcha' green, and in late autumn the needles go red and gold.
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DID YOU KNOW? Qingshanhu Water Forest Park is a scenic nature destination in Lin'an District, Hangzhou, Zhejiang Province, China, known for its stunning forest-on-water landscape, where trees grow directly in shallow lake waters and reflect like a fairy tale scene. The area combines forest, wetlands, and clear lake surfaces, with wooden boardwalks to walk along the metasequoia and pond cypress trees. NOW YOU KNOW!
Cannikin Quake: America's Biggest Underground Nuke Shook the Ground Like a Magnitude 7 Quake
On November 6, 1971, the Atomic Energy Commission set off Cannikin 5,875 feet beneath Amchitka Island in Alaska's Aleutians. The test proved the W71 warhead for the Spartan anti-ballistic missile. Its yield was officially 'less than five megatons', making it the largest underground nuclear test the United States has ever conducted. It shook the ground like a magnitude-7 earthquake, lifted the land and nearby seafloor, and caused rockfalls. Seismometers worldwide recorded it. Protests against the test launched the group that became Greenpeace.
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DID YOU KNOW? The Cannikin Test was an underground nuclear detonation conducted by the United States on November 6th, 1971, on Amchitka island in Alaska. With a yield of nearly five megatons, it was the largest underground nuclear test ever performed by the U.S. and was intended to test the Spartan anti-ballistic missile warhead. The explosion caused significant ground shock, triggering earthquakes, surface uplift, and landslides. It was detected by seismic instruments around the world. NOW YOU KNOW!
Sending EMALS: Carrier Catapults Fling Fighter Jets to Flying Speed in About Two Seconds
Carrier jets don't have room for a runway, so a catapult does the work. A shuttle in the deck hooks the launch bar on the jet's nose gear and drags the plane to flying speed in about two seconds. The Nimitz-class fleet still uses C-13 steam catapults, which push the shuttle with steam-driven pistons. The new Ford class (USS Gerald R. Ford, CVN 78, and the carriers after it) uses EMALS, the Electromagnetic Aircraft Launch System from General Atomics. It replaces the steam with a linear induction motor fed by energy stored in spinning generator rotors.
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DID YOU KNOW? Fighter jets launch from aircraft carriers using a catapult system designed to accelerate aircraft to takeoff speed in just a few moments. Modern U.S. carriers use either steam catapults or electromagnetic aircraft launch systems, or EMALS, which attach to a launch bar on the jet's nose gear and rapidly pull it down the deck, providing the immense force needed to reach flying speed in a very short distance. NOW YOU KNOW!
Rocket Stage Release: Rockets Shed Empty Stages to Reach Orbit
Stage separation is how a multistage rocket discards empty stages to save mass and reach orbit. Separation systems use explosive bolts or frangible joints, pneumatic pushers or springs, and sometimes small gas thrusters to push the spent stage away; the next stage then ignites its engine as the old stage falls away. The footage, credited to aerospacefanclub, shows an onboard view of a stage separating above Earth.
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Did you know, Rocket Stage Separation is the process by which a multi-stage rocket disc[ards empty] [...] separation [...] discards empty [...] reach orbit. [...] separation systems [...] pneumatic pushers, [...] gas thrusters [...] then ignites its [...] stage falls away [...] NOW YOU KNOW!
Piston Pumps: A Pump Whose Piston Never Touches the Fluid
A piston diaphragm (membrane) pump is a reciprocating positive-displacement pump. In most designs a crank-driven piston doesn't push the diaphragm directly: it moves a sealed hydraulic fluid, and that fluid flexes the diaphragm. On the suction stroke the pump chamber expands, the inlet check valve opens and liquid flows in. On the discharge stroke the diaphragm pushes into the chamber, the inlet valve closes and the outlet valve opens. Only the diaphragm, chamber and check valves touch the pumped liquid, so the pumps are used for slurries, acids and shear-sensitive products. Large mining models handle slurries of up to 85% solids at up to 250 °C.
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DID YOU KNOW? A piston membrane pump is a type of positive displacement pump that combines a mechanical piston with a flexible membrane to move fluids efficiently and safely. The piston drives the membrane back and forth, creating suction on the intake stroke, and pressure on the discharge stroke, while the fluid itself never comes into direct contact with the piston or drive mechanism. This separation makes the pump ideal for handling corrosive, abrasive, or sensitive liquids. NOW YOU KNOW!
Water Table Troubles: When Wells Chase a Falling Water Table
When pumping outpaces recharge, groundwater levels fall. The U.S. Geological Survey calls this groundwater depletion; effects include higher pumping costs, worse water quality, shrinking streams and lakes, and land subsidence. A 2024 Nature study of about 170,000 monitoring wells in 1,693 aquifer systems found rapid declines of more than 0.5 m a year to be widespread in the 21st century, especially in dry regions with extensive croplands. Declines had accelerated over four decades in 30% of the regional aquifers where a comparison was possible. The same study documented cases where levels recovered after policy changes, managed aquifer recharge or surface-water diversions. What usually can't be undone is compaction: when clay layers compress, the aquifer permanently loses storage, and the ground sinks.
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DID YOU KNOW? Groundwater recession in water-stressed regions occurs when water is pumped from aquifers faster than it can be naturally replenished by rainfall and surface infiltration. As demand from agriculture, industry, and populations increases, water tables gradually drop, forcing wells to be drilled deeper or abandoned entirely. In many arid and semi-arid areas groundwater recession is effectively irreversible on human time scales. NOW YOU KNOW!
Gas Blasting: Breaking Rock With Liquid CO₂
Carbon dioxide blasting was conceived around 1924–25 by three southern Illinois coal men, a chemist, an electrical engineer and a mine operator. They wanted a non-explosive way to break coal that would be at least as safe as permissible explosives and produce less fine coal. The Safety Mining Company took over the patents in 1927 under the trade name Cardox. A reusable high-strength steel tube is filled with liquid CO₂ at a charging plant and then placed in a drill hole. An electrically fired chemical heater turns the CO₂ supercritical almost instantly, and a rupture disc bursts at a set pressure, adjustable from about 1,200 to 2,800 bar. Mechanized mining made it rare in coal mines, but it's used again where explosives are restricted: in some coal mines, urban construction, frozen ground and concrete demolition.
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DID YOU KNOW? Carbon dioxide rock blasting is a controlled rock breaking technique that uses rapidly expanding carbon dioxide instead of traditional explosives. In this method liquid CO₂ is injected into a sealed tube placed in a drilled hole in the rock. When triggered, the CO₂ instantly expands into gas, generating extremely high pressure that fractures the rock from the inside. NOW YOU KNOW!
Shine Sublime: Cream for Color, Wax for Shine
A shoe shine follows a few basic steps: clean the leather, condition and color it, then build and buff a protective layer. Shoe creams are softer and richer in oils and pigment, so they nourish and recolor. Wax polishes leave a harder layer that gives shine and some water resistance. A 'mirror' or 'spit' shine comes from many thin coats of wax buffed with a little water. Modern tinned polish owes much to Kiwi. William Ramsay and Hamilton McKellar launched it in Melbourne in 1906, and its 1908 Dark Tan polish was marketed for restoring color and preserving leather. Through the 20th century, shining shoes was also a street trade, from bootblacks to the shoe-shine stands still found in stations and airports.
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DID YOU KNOW? Shoe shining is the process of cleaning, polishing, and protecting footwear to maintain its appearance and extend its lifespan. The process typically begins with brushing or wiping away dirt and dust, followed by applying a polish or cream that nourishes the leather and restores color. After letting the product absorb, the shoe is buffed with a soft cloth or brush to create a smooth, glossy finish. NOW YOU KNOW!
Golf Balling: Squash, Then Spring
When a driver hits a golf ball, the ball flattens noticeably for a fraction of a millisecond and then springs back. The coefficient of restitution (COR) measures how much speed survives that collision: 1 means a perfectly elastic bounce and 0 means none. Because a livelier ball goes farther, golf's governing bodies cap it. In the USGA/R&A Initial Velocity test, a ball is fired at a rigid barrier at 143.8 ft/s. Its initial velocity is calculated from its COR and contact time, and a sample fails if four or more of 24 balls exceed 255 ft/s. Balls must also meet the 317-yard Overall Distance Standard. From January 2028, that test will be run at a 125 mph clubhead speed instead of 120 mph, which the USGA expects to cut the longest hitters' drives by about 13 to 15 yards.
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DID YOU KNOW? The elasticity of a golf ball refers to its ability to deform and then quickly return to its original shape when struck, which directly affects how much energy is transferred from the club to the ball. When the club face hits the ball the outer layers compress, storing energy, and then rapidly rebound propelling the ball forward. This property is measured by the coefficient of restitution, or COR, with higher elasticity producing greater launch speed and distance. NOW YOU KNOW!
Static Spray: Static Electricity Holds This Paint in Place
Powder coating is a 'dry paint'. Polymer resin, curatives, pigments and flow additives are melt-mixed, cooled and ground into a powder as fine as baking flour. In electrostatic spray deposition, the most common method, a spray gun charges the particles and an electric field pulls them onto a grounded part, where the charge holds them until the part goes into a curing oven. At about 325–450 °F (163–232 °C) the powder melts, flows and chemically cross-links into a tough finish. Because there's no solvent, the process virtually eliminates volatile organic compounds (VOCs), and overspray can be recovered for reuse. Grounding matters: the path from the part to ground must stay under one megohm.
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DID YOU KNOW? Electrostatic powder coating is a finishing process used to apply a durable, uniform coating to metal and other conductive surfaces. In this method fine powder particles, usually made of resin and pigment, are given an electrostatic charge as they are sprayed onto the grounded object. The charged powder is attracted to the surface, sticking evenly on complex shapes. NOW YOU KNOW!
Airborne Wind Turbines: China Flew a Wind Turbine 2,000 Meters Up
The footage shows the helium-filled aerostats of Beijing-based SAWES Energy Technology (Linyi Yunchuan). The S1500 prototype flew at 1,500 m in Hami, Xinjiang, on September 19–23, 2025. The S2000 is a 60 × 40 × 40 m ducted airship of nearly 20,000 m³ carrying 12 turbines. On January 5, 2026, in Yibin, Sichuan, it climbed to 2,000 m in about 30 minutes, generated 385 kWh and fed it into the local grid through its tether, which the company calls a world first. Because wind power rises with the cube of wind speed, steadier high-altitude wind promises more energy from lighter hardware. The S1500's 1.16-tonne generating system compares with more than 10 tonnes for a conventional turbine. The company rates the S2000 at up to 3 MW; that figure is a claim, not yet a measured output.
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DID YOU KNOW? Chinese airborne wind turbine projects explore generating electricity by flying turbines high above the ground, where winds are stronger and more consistent than at tower height. These systems typically use tethered drones, kites, or balloon-supported platforms that carry lightweight turbines or act as airborne generators, sending power down to the ground through conductive cables. NOW YOU KNOW!
Dead Pools: There Are Lakes at the Bottom of the Sea
Brine pools are lakes on the seafloor: pockets of brine so dense they don't mix with the seawater above, complete with shorelines and even waterfalls. They form where seawater dissolves salt deposits buried under the seabed, such as the layers left when the ancient Gulf of Mexico evaporated, or the evaporites of the Red Sea rift. The best-known example, the Gulf of Mexico's 'Jacuzzi of Despair', lies about 1,000 m down and is about 30 m around. Its brine runs 80 to 110 psu (normal seawater is about 35). It's warm, nearly oxygen-free and charged with methane and hydrogen sulfide. Crabs, isopods and fish that wander in die, and their bodies are preserved along its rim.
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DID YOU KNOW? Underwater brine pools are extremely salty, dense bodies of water that form on the seafloor when salt-rich fluids seep out of the Earth's crust and settle into depressions, creating sharp, visible boundaries surrounding seawater. Because the salinity is several times higher than normal ocean water, these pools are toxic to most marine life, causing fish and other animals that fall in to become stunned or die. NOW YOU KNOW!
Snake Supreme: A Snake as Long as a Bus
Titanoboa cerrejonensis was a giant boid snake, a relative of today's boas and anacondas. Its fossils come from the Cerrejón coal mine in northeastern Colombia, in rocks 58 to 60 million years old, from the oldest known neotropical rainforest. Describing it in Nature in 2009, Jason Head and colleagues estimated it at about 13 m (43 ft) long and 1,135 kg. They also argued that a cold-blooded snake that size needed a mean annual temperature of about 30 to 34 °C. Later estimates run from about 12.8 to 14.3 m. In 2024, Vasuki indicus, a madtsoiid snake from India about 47 million years old, was estimated at 10.9 to 15.2 m. That makes it a possible rival, though Titanoboa's vertebrae are slightly larger.
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DID YOU KNOW? Titanoboa was an enormous prehistoric snake that lived about 58-60 million years ago, in what is now Colombia, thriving in the hot, swampy forests that formed after the dinosaurs went extinct. Reaching an estimated 42-50 ft in length and weighing over a ton, it was the largest snake ever known, with a body so thick it could rival an oil drum. NOW YOU KNOW!
Chicxulub Crater: A Crater You Can't See
The Chicxulub crater is a buried impact structure about 180 to 200 km across, centered near the town of Chicxulub on Mexico's Yucatán coast and extending under the Gulf of Mexico. It formed about 66 million years ago when an object roughly 10 km wide struck Earth, and the impact is tied to the end-Cretaceous mass extinction. Nothing of the crater is visible at the surface. It lies under about 1 km of younger sediment, and a ring of sinkholes (cenotes) traces its outline. Pemex geophysicists Glen Penfield and Antonio Camargo found it while searching for oil. It was identified as the impact site in 1991. In 2016, IODP-ICDP Expedition 364 drilled its peak ring, and a 2024 ruthenium-isotope study concluded the impactor was a carbonaceous asteroid that formed beyond Jupiter, not a comet.
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DID YOU KNOW? The Chicxulub crater located on the Yucatan Peninsula in Mexico, is a massive impact structure created around 66 million years ago by the collision of a large asteroid or comet with Earth. Measuring approximately 150 km, or 93 mi in diameter, it is linked to the mass extinction event that wiped out the non-avian dinosaurs and many other species at the end of the Cretaceous period. The impact released an immense amount of energy, triggering global wildfires, tsunamis, and a nuclear winter effect that drastically cooled the planet and disrupted ecosystems. NOW YOU KNOW!
Food Chain Hazing: Rivals, Not Dinner
Lions and spotted hyenas are Africa's two largest carnivores. They eat many of the same prey, so they compete directly for food. Lions often kill hyenas and their cubs, but they usually don't eat them. The killing removes a competitor rather than providing a meal. In Namibia's Etosha National Park, lions caused 71% of recorded hyena deaths in a one-year study (Trinkel & Kastberger, 2005). The rivalry runs both ways. Spotted hyenas are skilled hunters that kill most of their own food, and in some places they take carcasses from lions, especially when no adult male lions are around. Hyenas also 'mob' lions in groups to drive them away from dens.
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DID YOU KNOW? Lions are apex predators that sometimes target hyenas, using their superior strength and coordination to dominate or even cripple rival scavengers. When competing over food or territory, a pride of lions can overpower a hyena, delivering powerful bites to the legs, shoulders, or neck, which can immobilize or severely injure it. NOW YOU KNOW!
Hungarian Herding Dogs: Dreadlocks That Work for a Living
The Puli (plural Pulik) is a medium-sized Hungarian sheepdog. The American Kennel Club says the Magyars brought it to Hungary more than a thousand years ago to herd sheep over rough ground, where it might even jump onto the animals' backs. The AKC standard gives a height of about 16-17 inches and 25-35 lb, in solid black, rusty black, gray or white. Its coat cords naturally from about 10-12 months old, and it can be shown corded or brushed out. The large, cream-white dog in this Reel's footage looks more like a Komondor, Hungary's other corded breed. The Komondor is a much bigger livestock guardian rather than a herder. It's always white, at least about 25.5-27.5 inches tall, and its coat mats into flat cords that owners must separate by hand. Hungary also has other herding breeds, such as the Pumi and Mudi, so the title's plural is apt. Both the Puli and the Komondor were nearly lost during the Second World War.
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DID YOU KNOW? The Hungarian Puli is a distinctive herding dog best known for its long, corded coat that forms natural mop-like dreadlocks, giving it one of the most recognizable silhouettes in the dog world. Originally bred in Hungary to herd sheep and cattle, the Puli is extremely agile and energetic, using quick movements and sharp intelligence to control livestock with surprising precision. NOW YOU KNOW!
Arch of Titus: Carved Spoils of Jerusalem's Temple
The Arch of Titus stands on the Velia at the eastern edge of the Roman Forum, where the Via Sacra climbs toward the Palatine. Its dedication (CIL VI 945) honors 'divus' Titus, meaning Titus after his death and deification. So it's dated after Titus died in 81 CE, to the early reign of his brother Domitian, around 81-82 CE. Its reliefs celebrate the Roman triumph that Titus and his father Vespasian held in 71 CE after the Judaean War, in which Roman forces captured Jerusalem and destroyed the Second Temple in 70 CE. The south panel shows soldiers carrying the Temple's spoils, including the seven-branched menorah. The north panel shows Titus in his chariot, crowned by Victory, and the vault shows his apotheosis. The arch is mostly Pentelic marble. In the Middle Ages it was built into a fortress, and Giuseppe Valadier restored it in the 1820s, filling missing parts with travertine. Its menorah image was later chosen as the basis for the emblem of the State of Israel.
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DID YOU KNOW? The Arch of Titus is a first century AD triumphal arch located on the Via Sacra in Rome, built by Emperor Domitian ~81 CE to commemorate the victories of his brother Titus, particularly the Roman conquest of Jerusalem in 70 CE. Constructed of white marble, the single arch structure features detailed relief panels depicting scenes such as the spoils of the temple of Jerusalem, including the menorah being carried in a celebratory procession. NOW YOU KNOW!
Peristaltic Pumps: Squeeze, Roll, Repeat
A peristaltic pump is a positive-displacement pump. Rollers or shoes on a rotating head squeeze a flexible tube against a curved track, trapping 'pillows' of fluid and pushing them forward, while the tube springs back behind them to draw in more. The fluid only touches the inside of the tube, so the pump suits sterile, corrosive, shear-sensitive or hygienic fluids, and changing the tube is all it takes to switch fluids. The Reel gets one thing backwards, though. Peristaltic flow naturally pulses as each roller lifts off the tube. Manufacturers reduce pulsation with more rollers, offset or out-of-phase tube channels, dampers or compliant tubing, but don't eliminate it. The tube itself is the part that wears out. The design dates back at least to an 1855 US patent, and roller pumps later became standard for moving blood in medical equipment.
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DID YOU KNOW? Peristaltic pumps are a type of positive displacement pump that move fluids through a flexible tube using a series of rollers, or shoes, that compress and release the tubing in sequence. As the rollers squeeze the tube fluid is pushed forward, creating a smooth pulseless flow, without the fluid ever contacting the pump's internal components. This design makes peristaltic pumps ideal for handling sensitive, corrosive, or sterile liquids such as medical fluids, chemicals, or food products. NOW YOU KNOW!
da Vinci's Double Helix: Two Stairs, Never Meeting
The staircase in the footage is the double-helix staircase at the heart of the Château de Chambord in the Loire Valley, France. Two independent flights wind around each other and a hollow, partly open core, so people on one flight can see people on the other through the openings but never meet them. Leonardo da Vinci lived in France from 1516 as François I's 'first painter, architect and engineer of the king', and his notebooks include central-plan palaces and double and quadruple spiral stairs. Chambord itself says the staircase was 'inspired by' Leonardo and its architecture 'influenced' by him. No surviving document names him as the architect, and most art historians see him as an adviser whose ideas were developed with Domenico da Cortona and the master builders. Leonardo died on May 2, 1519, and construction at Chambord officially began on September 6, 1519, four months later.
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DID YOU KNOW? Leonardo da Vinci's helix staircase is a striking example of Renaissance ingenuity and architectural innovation. Designed with a double spiral, the staircase allows two sets of people to ascend and descend simultaneously without crossing paths. Its unique structure demonstrates da Vinci's deep understanding of geometry, balance, and spatial dynamics. Although several of his helix staircases were never built in his lifetime, surviving sketches and later reconstructions reveal his mastery in combining aesthetic elegance with practical engineering. NOW YOU KNOW!
Counter Crane: Balance Is the Real Lift
A crane tips over when the overturning moment (the load's weight times its distance from the tipping line, plus wind and slope effects) exceeds the stabilizing moment from the crane's own weight and counterweight. Counterweights sit behind the slewing center to add stabilizing moment. On mobile cranes they're usually stackable cast-iron or steel slabs, like the '10 t' plates in the footage. Tower cranes often use concrete blocks. Counterweight isn't free stability, though. With the boom raised steeply and no load, too much counterweight can tip a crane backward, so standards such as ISO 4305 require backward-stability checks. Outriggers widen the support base. A crane's safe capacity comes from the manufacturer's load chart for its exact counterweight, boom length, radius and outrigger setup, and capacity falls fast as the load moves farther out.
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DID YOU KNOW? Cranes use counterweights to safely lift heavy loads by balancing the enormous forces involved. When a crane hoists something extremely heavy the load creates a tipping moment that would cause the machine to fall forward, so engineers add massive counterweights, often made of steel or concrete, on the opposite side of the boom to shift the center of gravity back towards the crane's base. NOW YOU KNOW!
Lux or Luxor: A Pyramid With Sideways Elevators
Luxor Las Vegas opened on October 15, 1993, as a 30-story, 350 ft (106.7 m) pyramid clad in dark glass. Circus Circus Enterprises built it. At opening the pyramid held 2,526 rooms. Guests reach them by 'inclinators', elevators that run diagonally up the pyramid's corners at a 39-degree angle, around what Luxor promotes as one of the world's largest atriums. Two 22-story ziggurat-shaped hotel towers added in 1997 brought the resort to about 4,400 rooms, so not all of Luxor's rooms are in the pyramid. The sphinx at the entrance is a stylized, roughly 10-story version, taller than the Great Sphinx at Giza. At the apex, the Luxor Sky Beam shines straight up and has been promoted as the strongest beam of light in the world, which may be the 'lux' in the title.
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DID YOU KNOW? The Luxor Pyramid in Las Vegas is an iconic hotel and casino shaped like a massive glass and steel pyramid, standing 350 ft tall on the Las Vegas Strip. Opened in 1993, it was designed to evoke the grandeur of ancient Egypt, complete with a replica sphinx at its entrance and Egyptian themed decor throughout the interior. The pyramid houses thousands of guest rooms arranged along the sloped sides with elevators on the angled walls providing unique access to upper floors. NOW YOU KNOW!
Bos Gaurus: Called a Bison, Actually Cattle
The gaur (Bos gaurus) is the largest living wild bovine. It belongs to the cattle genus Bos, so the common Indian name 'Indian bison' is a misnomer, since true bison belong to the genus Bison. India's national studbook (Central Zoo Authority) gives adult bulls a typical shoulder height of about 1.6-2.0 m and a weight of about 600-1,000 kg (roughly 1,300-2,200 lb), with cows smaller at about 450-800 kg. A muscular ridge over the shoulders gives the back its humped profile, and both sexes carry curved horns. Gaur live in forests, forest edges and grassy clearings from India and Nepal through mainland Southeast Asia to the Malay Peninsula. The global population is estimated at 13,000-30,000, about 85% of them in India, and the species is listed as Vulnerable by the IUCN. The gayal or mithun (Bos frontalis) is generally considered its domesticated form.
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DID YOU KNOW? The Indian gaur, also known as the Indian bison, is the largest and most powerful wild cattle species on earth, towering up to 7 ft at the shoulder and weighing as much as 1,500 to 2,200 lbs. Found in the forests and grasslands of India and Southeast Asia, gaurs are known for their massive muscular build, distinctive high-ridged back, and striking curved horns shared by both males and females. NOW YOU KNOW!
Arapaima Gigas: Armor That Beats Piranhas
Arapaima gigas (pirarucu) is one of the largest freshwater fish in the world, native to the Amazon basin. FishBase gives a common length of about 2 m and maximum reports of 4.5 m and 200 kg. Very large historical records are poorly documented. It's an obligate air-breather. It uses a lung-like swim bladder and has to surface roughly every 5-15 minutes, which is a big part of why it has been easy to overfish. Its large overlapping scales have a hard mineralized outer layer over flexible layers of collagen fibers. Studies by Marc Meyers and colleagues found piranha teeth can't easily penetrate them. It feeds mainly on fish by suction, and birds or small animals are occasional prey. Taxonomy is unsettled. The genus Arapaima was long treated as a single species, but work by Donald Stewart (2013) revived and described additional species, such as A. leptosoma, so 'arapaima' doesn't always mean A. gigas. The IUCN lists A. gigas as Data Deficient.
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DID YOU KNOW? The arapaima is one of the largest freshwater fish on earth, native to the Amazon and its surrounding river systems, where it can grow over 10 ft long and weigh more than 400 lbs. Its body is armored with tough, mosaic-like scales that provide protection from predators such as piranhas, and it hunts with sudden powerful suction that can pull prey, including fish, birds, and even small mammals straight into its mouth. NOW YOU KNOW!
Turtle Torpor: One Breath, Hours Underwater
Turtles stay underwater in two quite different ways. Sea turtles, like the one in the footage, are air-breathers. They rely on oxygen stored in their lungs, blood and muscles, plus a low resting metabolism. A study of wild green turtles (Chelonia mydas) found they maximize time underwater on resting dives and then take five to seven breaths at the surface. Reviews of sea turtle diving report single breath-hold dives of over 10 hours. Absorbing oxygen from water is mainly a trick of some freshwater turtles. Australia's Fitzroy River turtle (Rheodytes leukops) pumps water through enlarged cloacal bursae. In the wild its dives averaged about 33 minutes and reached up to 623 minutes, and hatchlings got 63-73% of their oxygen from water. That works best in cool, oxygen-rich water. In warm summer water the same turtle becomes reliant on air. Some other species exchange gas through the lining of the mouth and throat.
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DID YOU KNOW? Turtles have evolved remarkable adaptations that allow them underwater for extended periods. While submerged, many freshwater and sea turtles enter a state of reduced activity and slowed metabolism. They can absorb oxygen directly from water through specialized tissues in their throat, cloaca, or skin, allowing them to stay underwater without surfacing frequently. NOW YOU KNOW!
One Incense Pillar: 150 m Tall, 4 m Wide
One Incense Pillar (Yizhuxiang, 'one stick of incense') is a limestone karst pillar in the Enshi Grand Canyon, a national 5A scenic area and geopark in Enshi, western Hubei. Scenic-area descriptions give it a height of 150 m, a base diameter of 6 m and a minimum diameter of 4 m. They attribute its stability to flat-lying Triassic limestone beds with high compressive strength. Tourism and media sources say it has withstood several major earthquakes, though I found no independent geological documentation of specific quakes. Local Tujia legend says a deity gave the pillar to the people as an incense stick to light in times of disaster. The canyon itself runs about 108 km.
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DID YOU KNOW? The One Incense Pillar is a remarkable natural rock formation in the Enshi Grand Canyon, located in Hubei Province, central China. Rising ~150 m from the canyon floor, yet narrowing to just 4 m across its slimmest point, this slender karst pillar defies gravity and earthquakes by standing tall among steep cliffs and rugged terrain. NOW YOU KNOW!
Ursine Uptime: Awake but Still Hibernating
'Walking hibernation' is a real term. The North American Bear Center describes it as the 2-3 weeks after bears leave the den, when they move around but eat and drink less than normal while their bodies return to summer levels. In a 2011 Science study, Øivind Tøien and colleagues continuously monitored black bears (Ursus americanus) in Alaska. They found the bears cut their metabolism to about 25% of the basal rate while body temperature fell only modestly, cycling between about 30 and 36 °C. Heart rate dropped from about 55 to as few as 9 beats per minute, and metabolism stayed reduced for up to three weeks after the bears emerged. Studies of brown bears in Sweden found body temperature normalized about 10 days after emergence, and heart rate took about a month. Black bears in closed dens go 5-7 months without eating, drinking, urinating or defecating, but mothers in open dens may lick meltwater and clean up after cubs.
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DID YOU KNOW? When bears come out of hibernation in early spring, they enter a transition phase called "walking hibernation", where their metabolism is still slow, and they gradually regain full strength. During hibernation, a bear's heart rate, body temperature, and calorie use drop dramatically, allowing it to survive months without eating, drinking, or expelling waste. NOW YOU KNOW!
Yonshakudama: A 420 kg Firework Shell
Yonshakudama means '4-shaku shell'. A shaku is an old Japanese unit of about 30 cm, so the shell is about 120 cm across. It's the showpiece of the Katakai Fireworks Festival in Ojiya, Niigata, held on September 9-10 each year as an offering to Asahara Shrine. According to the festival, the shell weighs about 420 kg, climbs to about 800 m and bursts into a sphere about 800 m wide. Katakai first launched one successfully on September 10, 1985, and Guinness recognized it as the largest aerial firework shell at 418 kg. That record has since passed to a 4-shaku shell launched at the Kounosu festival in Saitama on October 11, 2014. It weighed 464.826 kg, reached 907 m at the top of its burst and spread 748 m wide.
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DID YOU KNOW? The Yonshakudama firework is one of the largest aerial shells in the world, measuring about 1.2 m or 4 ft in diameter, and weighing over 400 kgs or nearly 900 lbs. This colossal shell is carefully hoisted into a reinforced mortar and blasted more than half a kilometer into the sky. When it detonates, it creates a gigantic sphere of light nearly 800 m or 2,600 ft wide. NOW YOU KNOW!
Feminizing Frogs: A Weedkiller vs. Frog Hormones
Atrazine is a weedkiller widely used on US corn, sorghum and sugarcane. In 2002, Tyrone Hayes's lab at UC Berkeley reported that male African clawed frogs (Xenopus laevis) raised in water with as little as 0.1 parts per billion of atrazine developed gonadal abnormalities, including hermaphroditism, and smaller larynxes. A 2010 study from the same lab found that exposed genetic males were demasculinized, and about 10% developed into functional females that laid eggs. Other labs, including studies funded by the manufacturer, did not consistently reproduce these effects. In 2007, the US EPA weighed 36 studies and concluded that atrazine does not produce consistent, reproducible effects on amphibian gonadal development. A 2010 review by Rohr and McCoy found fairly consistent sublethal effects on fish and amphibians, such as on metamorphosis and immune measures. The EU hasn't allowed atrazine since 2004, largely because of groundwater limits. The US still permits it, and in 2024 the EPA set its aquatic level of concern at 9.7 µg/L, based on aquatic plant communities.
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DID YOU KNOW? Atrazine a widely used herbicide, has been linked to significant effects on amphibians, particularly frogs. Studies have shown that exposure to atrazine, even at low concentrations, can disrupt endocrine function leading to abnormal sexual development such as hermaphroditism, demasculinization of males, and reduced fertility. It can also interfere with growth, immune function, and behavior. NOW YOU KNOW!
ATL Air Traffic: 106 Million Passengers a Year
Hartsfield-Jackson Atlanta International Airport (ATL) was again the world's busiest airport by passengers in 2025, with 106.3 million passengers. That was down 1.6% from 2024, and Dubai (95.2 million) and Tokyo Haneda (91.7 million) were closing the gap, according to Airports Council International. ACI says four of the five US airports in the top 20 are mainly domestic hubs, with 80-95% domestic passengers, which describes ATL's traffic. By aircraft movements, though, Chicago O'Hare ranked first in 2025. ATL has five parallel runways and two terminals, the Domestic Terminal and the Maynard H. Jackson Jr. International Terminal, with seven concourses linked by an underground train. It's Delta Air Lines' main hub and is named after two Atlanta mayors, William B. Hartsfield and Maynard Jackson.
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DID YOU KNOW? Hartsfield-Jackson Atlanta International Airport, is one of the busiest airports in the world, handling more passengers and takeoffs than almost any other airport globally. Located in Atlanta, Georgia, it serves as a major hub for domestic and international flights, connecting hundreds of destinations across the US and around the globe. ATL operates five parallel runways and two large terminals, accommodating a mix of commercial airlines, cargo traffic, and general aviation. NOW YOU KNOW!
Hydrant Hygiene: Why Firefighters Open Hydrants
Fire hydrants are opened outside emergencies for three main reasons. First, inspection: checking that the hydrant opens, drains and is serviceable. Second, flushing: moving water fast enough to scour sediment, rust and stale water out of mains. Third, flow testing: measuring static and residual pressure and flow to rate a hydrant and model the network. Who does the work varies by city. In New York, the FDNY inspects hydrants twice a year (spring and fall), opening each one and flushing its barrel, while the Department of Environmental Protection carries out hydrant flow tests. New York State rules for water corporations require hydrants to be inspected and tested at least every three years, with methods from the AWWA M17 manual. The brown water often seen in videos is sediment and iron stirred up from the pipes. Flushing can briefly discolor tap water nearby.
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DID YOU KNOW? When not responding to an active fire, firefighters may open hydrants as part of routine maintenance, or municipal safety practices. This includes flushing the system to remove sediment, rust, or stagnant water that could reduce water quality or pressure in the pipes. Hydrants are also opened to test water pressure and flow rates, ensuring the system will perform reliably during emergencies. NOW YOU KNOW!
XB-70 Valkyrie: A Mach 3 Bomber That Never Went to War
North American Aviation designed the B-70 in the late 1950s as a six-engine, delta-winged nuclear bomber that would cruise its whole mission at Mach 3 and about 70,000 feet, too fast and high for the Soviet interceptors of the day. Soviet surface-to-air missiles, which shot down Gary Powers's U-2 in 1960, and the rise of ICBMs undercut that idea, and President Kennedy canceled the bomber in March 1961. Two XB-70A prototypes were completed as research aircraft. AV-1 first flew on September 21, 1964. The aircraft rode its own shock wave for 'compression lift', drooped its wingtips up to 65° at speed, and reached Mach 3.08 and 74,000 ft. On June 8, 1966, AV-2 was lost after an F-104 chase plane collided with it during a GE publicity photo flight. NASA pilot Joe Walker and USAF Maj. Carl Cross were killed. AV-1 flew research missions until 1969 and is now at the National Museum of the U.S. Air Force in Dayton, Ohio.
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DID YOU KNOW? The XB-70 Valkyrie was a prototype supersonic strategic bomber developed by North American Aviation for the United States in the 1960s, designed to fly at Mach 3 speeds at altitudes above 70,000 feet. It was intended to penetrate Soviet airspace with nuclear weapons during the Cold War, relying on speed and altitude rather than stealth for defense. NOW YOU KNOW!
CIPP: A New Pipe, No Digging
Cured-in-place pipe (CIPP) is a trenchless way to rehabilitate sewer, storm, water and other pipes. A flexible tube of felt or fiberglass is soaked in thermosetting resin (polyester, vinyl ester or epoxy). It's either inverted into the host pipe with water or air pressure, or pulled in and inflated. The resin is then cured with hot water, steam or, for glass-fiber liners, UV light. The result is a jointless pipe-within-a-pipe, usually a few millimeters to a few centimeters thick. Engineer Eric Wood first used the method in London in 1971, and it was commercialized as Insituform. A 2012 US EPA retrospective found sampled municipal sewer liners generally in good condition after years in service. Researchers at Purdue (2017) reported that steam-cured installations release a mix of chemical vapors, including styrene, which raised worker- and public-exposure concerns. Service connections have to be reopened from inside, usually by robotic cutters.
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DID YOU KNOW? Cured-in-place-pipe, or CIPP lining, is a trenchless method used to repair damaged or aging pipelines without the need for extensive excavation. The process involves inserting a flexible liner saturated with a thermosetting resin into the existing pipe, and then expanding it using air or water pressure so that it conforms to the pipe's interior walls. Once in place, the resin is cured using hot water, steam or, UV light, hardening the liner into a durable, seamless new pipe inside the old one. NOW YOU KNOW!
Mandelbulbs: The Mandelbrot Set in Three Dimensions
The Mandelbrot set is drawn by repeatedly squaring a complex number and adding a constant, then coloring the points whose values never escape to infinity. Fractal hobbyists spent years looking for a true 3D version. The obstacle is that there's no three-dimensional number system that works like the complex numbers, so there's no canonical 3D Mandelbrot. Rudy Rucker imagined the idea in the 1980s, and Daniel White published a spherical-coordinate formula on Fractal Forums in 2007. In 2009 Paul Nylander raised the power, usually to 8, and the result, the Mandelbulb, showed buds on buds at every zoom level. It's computed by iterating v → vⁿ + c in spherical coordinates and keeping the points whose orbits stay bounded. The power n sets the number of lobes. Mandelbulb interiors appear in Disney's Big Hero 6 (2014) and Annihilation (2018).
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DID YOU KNOW? Mandelbulb fractals are three-dimensional extensions of the famous two-dimensional Mandelbrot set, created to explore complex patterns in higher dimensions. Unlike traditional fractals, which exist on a flat plane, mandelbulbs exhibit intricate, self-similar structures that twist and fold in three-dimensional space, providing shapes that resemble organic forms, towers, and spirals. They are generated using mathematical equations applied iteratively, with small changes producing dramatic variations in the overall shape. These fractals are popular in computer graphics and digital art because of their surreal, otherworldly appearance. NOW YOU KNOW!
Siwa Salt Oasis: Floating in the Sahara
Siwa is an oasis town in Egypt's Matrouh Governorate, in a depression that reaches about 19 m below sea level. It lies about 50 km east of the Libyan border and 560 km from Cairo, and about 25,000-30,000 people live there. It has roughly 200 natural springs (one study counts 226) and several large salt lakes. Most springs draw on a shallow limestone aquifer, the Tertiary Carbonate Aquifer, which is moderately to highly saline. A 2026 study found that the shallow aquifer is recharged mainly by upward flow from the deep Nubian Sandstone Aquifer, whose 'fossil' paleowater is about 4,300 to 14,200 years old. Because Siwa is a closed basin, excess irrigation and drainage water has nowhere to go. The salt lakes grew from about 23 km² in 1990 to about 61 km² in 2020, and Egypt's water ministry calls waterlogging and salinity chronic problems. The vivid turquoise pools that visitors float in are very salty. The oasis was also home to the ancient oracle of Amun, which Alexander the Great visited.
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DID YOU KNOW? The water in Siwa Oasis, Egypt, is famed for its high mineral content and therapeutic qualities, drawn from natural springs that have sustained the oasis for thousands of years. Located deep in Egypt's Western Desert, Siwa's water emerges from underground aquifers fed by ancient fossil water reserves, creating over 200 springs and salt lakes that shape the region's unique ecosystem. NOW YOU KNOW!
Anti-Defamation League: A League Born in 1913
The Anti-Defamation League (ADL) is a New York-based 501(c)(3) nonprofit. B'nai B'rith, a Jewish service organization, founded it in Chicago in autumn 1913, with attorney Sigmund Livingston as its first leader. Wikipedia's account places the founding in the wake of the contested murder conviction of Leo Frank that year. The ADL became independent of B'nai B'rith in 2009, and Jonathan Greenblatt has been its CEO since 2015. The ADL describes its purpose as protecting the Jewish people and fighting antisemitism and hate. It's known for incident audits, research on extremism, law-enforcement training and pro-Israel advocacy. The ADL is politically contested. Critics on the left have accused it of conflating criticism of Israel with antisemitism. In late 2025, conservative critics, including Elon Musk and FBI Director Kash Patel, attacked its extremism research after its glossary included an entry on Turning Point USA. The ADL took the glossary down, the FBI announced it was cutting ties, and the ADL said it remained committed to protecting the Jewish people. This case reports those claims with their sources and doesn't judge them.
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DID YOU KNOW? The Anti-Defamation League, or ADL, is a US-based non-profit organization founded in 1913 to combat anti-Semitism and defend civil rights for all people. Originally established in response to widespread discrimination against Jewish Americans, the ADL's mission has expanded to include fighting hate, extremism, and misinformation across society. NOW YOU KNOW!
Coffin Homes: In Hong Kong, Some Homes Are Barely Bigger Than a Single Bed
Hong Kong's high housing costs have pushed about 220,000 people into roughly 110,000 subdivided units (SDUs). The median SDU in the 2021 census was 11 m², about 6 m² per person. At the extreme are 'coffin' cubicles: wooden, bed-sized compartments in partitioned flats, with a lockable door and little else. They're too low to stand in, and residents share kitchens and toilets. Per square foot, these tiny spaces rent for more than private flats. Hong Kong has regulated 'cage home' bedspace apartments since 1994. A new Basic Housing Units Ordinance, in force from March 1, 2026, sets minimum standards for subdivided flats (at least 8 m², a window and a toilet), but it doesn't cover bedspace or coffin-cubicle housing.
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DID YOU KNOW? Coffin homes in Hong Kong are extremely small, partitioned living spaces that cater to residents who can not afford the city's sky-high housing costs. Often no more than a few square meters, these units are just large enough to fit a bed, exposing residents to cramped conditions, health risks, and limited privacy. NOW YOU KNOW!
Orwellian: The Hero of 1984 Rewrites History for a Living
George Orwell's ninth and final completed book, Nineteen Eighty-Four, came out from Secker & Warburg in London on June 8, 1949, and in the U.S. five days later. Orwell died seven months after publication. The novel is set in London, chief city of 'Airstrip One', a province of the superstate Oceania, ruled by the Party under its symbolic head, Big Brother. Winston Smith, an Outer Party member, works at the Ministry of Truth, revising back issues of The Times while the originals vanish down 'memory holes' into a furnace. He rebels with Julia and is betrayed by O'Brien of the Inner Party. Under torture he is broken until he loves Big Brother. The Reel's footage comes from Michael Radford's 1984 film, with John Hurt as Winston.
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DID YOU KNOW? George Orwell's 1984, published in 1949, is a dystopian novel set in a totalitarian future, where The Party, lead by the omnipresent figure Big Brother, exercises absolute control over society. The story follows Winston Smith, a low-ranking party member, as he navigates a world of pervasive surveillance, propaganda, and thought control, where independent thinking is criminalized and history is constantly rewritten to serve The Party's agenda. NOW YOU KNOW!
The Wailing Wall: Not the Temple, Its Retaining Wall
The Western Wall (Hebrew HaKotel HaMa'aravi, 'the Kotel') is a limestone wall in Jerusalem's Old City. It's the more common name. 'Wailing Wall' comes from European descriptions of Jews mourning the Temple's destruction there, and in Arabic it's called al-Buraq Wall. The wall isn't part of the Temple building. It's a stretch of the western retaining wall that Herod the Great built, starting around 19 BCE, when he enlarged the platform of the Temple Mount. The Romans destroyed the Second Temple in 70 CE, but the retaining wall survived. The full wall is about 488 m long, with roughly 19 m exposed above the prayer plaza. The lowest visible courses are Herodian, and the upper layers were added in later periods. Because of restrictions on prayer on the Temple Mount itself, the Wall is the holiest place where Jews are permitted to pray. The site sits beside the Temple Mount/Haram al-Sharif compound, which is also sacred to Muslims, and it's religiously and politically sensitive.
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DID YOU KNOW? The Wailing Wall or Western Wall is a historical and religious landmark in Jerusalem, representing the last surviving section of the Second Jewish Temple, which was destroyed by the Romans in 70 CE. Originally part of the massive retaining walls that surrounded the Temple Mount, it has stood for nearly two millennia as a silent witness to Jerusalem's turbulent history, including periods of conquest, exile, and rebuilding. For centuries, Jews have gathered at the wall to mourn the Temple's destruction. NOW YOU KNOW!
Kirk: Founder at Just 18
Charles James 'Charlie' Kirk (October 14, 1993 – September 10, 2025) was an American conservative political activist and media personality. He was born in Arlington Heights, Illinois, and raised in nearby Prospect Heights. In June 2012, at 18, he co-founded Turning Point USA (TPUSA) with businessman Bill Montgomery, as a student organization promoting free markets and limited government. He led it as its public face for 13 years and became widely known for campus debates and his daily program, The Charlie Kirk Show. On September 10, 2025, he was shot and killed while speaking at a TPUSA event at Utah Valley University in Orem, Utah, at age 31. A suspect, Tyler Robinson, was arrested two days later and charged with aggravated murder. Kirk's widow, Erika Kirk, was elected CEO of TPUSA on September 18, 2025, and he was posthumously awarded the Presidential Medal of Freedom on October 14, 2025. He was a polarizing figure who drew both strong support and strong criticism, and this case sticks to the documented record.
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DID YOU KNOW? Charlie Kirk was an American conservative activist, media host, and founder of Turning Point USA, an organization he started in 2012 to promote free-market and conservative values among young voters. Born in 1993 in Illinois, he rose to prominence in his early 20s through campus activism, social media influence, and as a host of the Charlie Kirk Show. NOW YOU KNOW!
Ellison: Larry Ellison, Oracle's Co-Founder
Larry Ellison was born in New York City in 1944 and adopted as a baby by relatives in Chicago. He left the University of Illinois and later the University of Chicago without a degree. In 1977 he co-founded Software Development Laboratories with Bob Miner and Ed Oates, colleagues from Ampex, where they had worked on a CIA-funded mass-storage project code-named ORACLE. The company released the first commercial SQL relational database in 1979 and later took the Oracle name. Ellison was CEO from 1977 until September 2014 and is now Oracle's executive chairman and chief technology officer; Clay Magouyrk and Mike Sicilia have been co-CEOs since September 2025. He owns roughly 40% of Oracle, and his fortune moves with its stock: Forbes put it at $167.2 billion on Oct. 17, 2026, after he briefly topped $400 billion in September 2025.
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DID YOU KNOW? Larry Ellison is an American business magnate, co-founder and former CEO of Oracle Corporation, one of the world's largest software and cloud computing companies. Born in 1944 in New York City, and raised in Chicago, Ellison dropped out of college before founding Oracle in 1977, initially building databases for the CIA under the project name Oracle. Known for his competitive drive and sharp business instincts, he grew Oracle into a multi-billion dollar powerhouse that helped define modern enterprise software. NOW YOU KNOW!
Nic Mad: Nicolás Maduro Led Venezuela, 2013–2026
Nicolás Maduro, born Nov. 23, 1962, in Caracas, worked as a bus driver and transit-union representative before entering politics alongside Hugo Chávez. He served in the legislature, as foreign minister from 2006 and as vice president from October 2012. After Chávez died in March 2013, Maduro became interim president and narrowly won an April 2013 special election. He was reelected in 2018, and in 2024 the National Electoral Council declared him the winner of an election that the opposition and several foreign governments disputed. On Jan. 3, 2026, U.S. forces captured Maduro and his wife, Cilia Flores, in Caracas and flew them to New York, where they face federal charges. Both have pleaded not guilty, and Maduro calls the accusations false. Delcy Rodríguez, his former vice president, has led Venezuela as acting president since January 2026. This Reel was posted in November 2025, before those events.
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DID YOU KNOW? Nicolás Maduro is a Venezuelan politician who has served as the country's president since 2013, following the death of Hugo Chávez. Born in 1962 in Caracas, Maduro was a bus driver and union leader before rising through the ranks of the United Socialist Party of Venezuela, or PSUV, eventually becoming Chávez's foreign minister and vice president. Despite international criticism and contested elections, Maduro has maintained power through a combination of military loyalty, political maneuvering, and control over state institutions. NOW YOU KNOW!
Gyotaku: Proof of the Catch, in Ink
Gyotaku (from gyo, 'fish', and taku, 'impression') is the Japanese practice of printing fish. The oldest known gyotaku, Kinshibori no funa ('Crucian Carp from the Kinshibori Canal'), is dated to 1839. It records a crucian carp caught in Edo (now Tokyo) by Sakai Tadaaki, ninth lord of the Shōnai domain, and is kept at the Tsuruoka City Museum of Local History. Nippon.com reports that the Shōnai region around Tsuruoka in Yamagata Prefecture is considered gyotaku's birthplace. The domain encouraged its samurai to fish from the rocky shore as training, and they used prints to record their big catches. There are two main methods. In the direct method (chokusetsuhō), ink or paint goes on the fish and paper is pressed over it, which gives a mirror image. In the indirect method (kansetsuhō), thin damp washi paper is molded onto the fish and color is dabbed on with a silk-wrapped pad called a tanpo, like a rubbing. After photography spread in the postwar period, colorful 'art gyotaku' grew into a style of its own. Researchers have also used old gyotaku as historical records of fish sizes and species. The footage shows the technique on an octopus, which is inked, printed on paper and finished with a red seal stamped on the print. Gyotaku is traditionally done with fish, and octopus and squid prints are also common.
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DID YOU KNOW? Gyotaku is a traditional Japanese art form that involves creating prints of fish, originally developed in the mid 19th century as a way for fishermen to record their catches. The process typically involves covering a freshly caught fish with ink or paint, then pressing rice paper or fabric onto its surface to capture a detailed, lifelike impression of its scales, fins, and body shape. Over time Gyotaku evolved from a practical recording method into a respected artistic technique. NOW YOU KNOW!
Argyroneta Aquatica: A Spider With Its Own Air Tank
The diving bell spider, Argyroneta aquatica, is generally described as the only spider that spends almost its whole life underwater. It lives in ponds and slow, plant-filled fresh water across Europe and northern Asia. It spins a silk sheet among water plants and fills it with air to make a 'diving bell'. It carries the air down from the surface as a silvery film trapped by hairs on its abdomen and legs, which is why it looks silver underwater. Inside the bell it rests, eats prey and molts, and females lay their eggs there. In 2011, Roger Seymour and Stefan Hetz reported in the Journal of Experimental Biology that the bell also works as a physical gill. Oxygen dissolved in the water diffuses into the bubble as the spider uses it up. In their measurements, that inflow could meet a resting spider's oxygen needs, even in warm, stagnant water. Nitrogen slowly diffuses out, so the bell shrinks and has to be topped up. The spider can stay down for more than a day rather than surfacing every 20 to 40 minutes, as had been thought. The footage shows the spider underwater, its body coated in a silver air bubble, among water plants.
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DID YOU KNOW? The diving bell spider or argyroneta aquatica, is the only known spider that lives almost entirely underwater, relying on a unique silk diving bell to survive. Found in freshwater habitats across Europe and northern Asia, it spins a dome-shaped web between aquatic plants and traps air bubbles from the surface. NOW YOU KNOW!
Point Curie: Too Hot to Stick
The Curie point, or Curie temperature, is named after Pierre Curie. His 1895 thesis, 'Propriétés magnétiques des corps à diverses températures' (Magnetic properties of substances at various temperatures), showed how magnetism changes with temperature. In a ferromagnet such as iron, a quantum effect called exchange interaction lines up the atoms' magnetic moments within small regions called domains. Above the Curie temperature, heat scrambles that alignment. The material loses its spontaneous magnetization and becomes paramagnetic: it's only weakly attracted to a magnet, and only while a field is applied. The Curie temperature is about 770 °C for iron, 358 °C for nickel and about 1,115 °C for cobalt. That's why a red-hot piece of iron stops sticking to a magnet and is attracted again as it cools. Being below the Curie point doesn't automatically make something a permanent magnet. In an ordinary iron nail the domains point in different directions and cancel out, which is why the nail isn't a magnet until it's magnetized. Antiferromagnets have a similar transition called the Néel temperature. The footage shows a torch heating a small metal piece until it glows, while a magnet on a rod hangs above it.
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DID YOU KNOW? The Curie Point or Curie temperature is the critical temperature at which a ferromagnetic material such as iron, nickel, or cobalt loses its permanent magnetism and becomes paramagnetic. Below this temperature, the material's atomic magnetic moments align in the same direction due to strong internal interactions, creating a stable magnetic field. NOW YOU KNOW!
Stick Walk: Herding From Three Meters Up
The Banna (also written Bena) are a people of the Lower Omo Valley in southern Ethiopia's South Omo Zone. They live in the higher country around the market town of Key Afer and are closely related to their Hamar neighbors, with whom they share the Hamar-Banna language and major ceremonies. Their best-known tradition, the one in the footage, is stilt-walking, not walking with sticks. Young men and boys strap their feet to tall wooden poles and stride across roads and fields, sometimes about three meters above the ground. A 2026 DW report describes it as an old herding skill that helps young herders watch over their animals and stay safe from snakes. Other accounts describe it as a rite of passage and a performance at festivals, where stilt-walkers may paint their bodies with white stripes. Explanations vary, and some accounts doubt the practical origin story. Stilt-walking now also draws tourists, which DW reports brings extra income along with outside influences. The footage shows young men on long stilts walking along a road and across red earth, with green hills behind.
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DID YOU KNOW? The Banna tribe of southern Ethiopia, near the Omo Valley, is known for its traditional stick walking, a graceful and symbolic practice that reflects balance, pride, and cultural identity. During ceremonies or community gatherings, Banna men walk with long wooden staffs, using them both as walking sticks and as extensions of their posture to demonstrate strength, composure, and readiness. NOW YOU KNOW!
Photon Film: A Camera That Films Light Itself Moving
In 2020, Edoardo Charbon's AQUA lab at EPFL and Canon unveiled MegaX, the first megapixel camera built from single-photon avalanche diodes (SPADs), pixels sensitive enough to register one photon at a time. It records up to 24,000 frames per second, but it can also open its pixels for gates just nanoseconds long and shift them in steps of picoseconds (trillionths of a second). Repeating a laser pulse and stepping the gate let the team rebuild a laser pulse flying past optics, slowed down hundreds of millions of times. The 'trillion frames per second' figure the Reel uses belongs to other projects: MIT's 2011 femto-photography and Caltech's 2018 T-CUP, which reached 10 trillion frames per second.
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DID YOU KNOW? Swiss scientists at EPFL developed a groundbreaking camera capable of capturing the motion of light at trillions of frames per second, fast enough to observe individual photons in action. Using advanced single photon avalanche diode sensors, combined with computational imaging techniques, the camera can reconstruct ultra-fast events by encoding each light pulse with unique temporal patterns. NOW YOU KNOW!
Nature's Reclamation: If People Vanished, the City Would Go Green
The Reel retells a famous thought experiment popularized by journalist Alan Weisman's 2007 book The World Without Us. In his version of New York, the first big change comes underground: about 800 pumps that keep groundwater out of the subway would stop, and tunnels would flood within days. Freeze-thaw cycles would crack pavement for weeds and then trees, corroding steel would undermine streets and buildings over decades, and forest would cover much of the city within a couple of centuries. There is a real-world test case: Pripyat, near Chernobyl, abandoned in 1986, where trees are taking over streets and wildlife is thriving.
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DID YOU KNOW? If humanity vanished overnight nature would begin reclaiming cities almost immediately. Grass and weeds would sprout through cracks in pavement within days. Within a few years, trees would take root in sidewalks and rooftops, and vines would cover buildings as ecosystems rebalance. Within a few centuries, skyscrapers would collapse from rust and erosion, and dense forests or wetlands would replace the urban sprawl. NOW YOU KNOW!
Digital ID: A UK Digital ID, Proposed Then Dropped
The Reel blends two separate UK projects. The first is GOV.UK Wallet, announced on January 21, 2025. It's an optional app for storing government-issued documents on a phone, starting with the HM Armed Forces Veteran Card and with a digital driving licence planned. The government said every government-issued credential should be available digitally by the end of 2027, alongside the physical versions. Its technical documents say credentials are tied to the user's GOV.UK One Login account and device, can't be moved to another device, and can be revoked by the issuer. The second project is a national digital ID. On September 26, 2025, Prime Minister Keir Starmer announced a free digital ID for citizens and legal residents. The government said it would be mandatory for right-to-work checks by the end of the Parliament, to curb illegal working, and would make it easier to use public services. Critics including Big Brother Watch and a coalition of 13 NGOs warned of mission creep, surveillance, data-security risks and exclusion. A parliamentary petition against digital ID cards gathered more than 2.9 million signatures and was debated on December 8, 2025. In January 2026, the government dropped the plan to require the digital ID itself for right-to-work checks, saying other digital documents such as eVisas and e-passports could be used. It published a consultation in March 2026. In May 2026, the Home Affairs Committee called the original announcement 'rushed' and 'poorly thought through'. On July 21, 2026, the government cancelled the national digital ID programme; Reuters reported the decision as one of new Prime Minister Andy Burnham's first moves. In its September 2026 response to the committee, the government said GOV.UK One Login, GOV.UK Wallet and digital credentials such as the Veteran Card and driving licence will continue as separate projects. Employers must still carry out right-to-work checks, but won't be required to do them digitally.
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DID YOU KNOW? The UK is rolling out a new digital ID system that allows citizens to prove their identity through a secure government app called the GOV.UK Wallet, which stores verified credentials like driving licenses and veteran cards, with passports and other documents to follow. Designed to streamline access to public services and reduce fraud, the system uses encryption to keep data on users' devices and can be revoked remotely if a phone is lost. NOW YOU KNOW!
Kangina Grapes: Grapes Sealed in Mud
Kangina (also spelled gangina or kangana) is an Afghan way of keeping fresh grapes through winter in sealed containers made of mud and straw. In summer, families shape mud and straw into pairs of shallow bowls and dry them in the sun for a few hours. At harvest, they fill one bowl with fresh grapes, cap it with the other and seal the seam with more mud. Each kangina in a 2025 Xinhua report held about 1 kg. Stored in a cool, dry place, the sealed vessels keep grapes fresh for up to about six months, from early October to late March according to Kabul-area vendors. Many are opened for Nowruz, the spring new year. The method works best with Taifi, a thick-skinned, late-season grape. The tradition is strongest in the Shomali Plain and Kalakan district north of Kabul, and vendors sell kangina grapes through the winter. The method had been studied very little until recently. A 2022 study of Taifi grapes stored at room temperature for 50 days found gangina effective but heavy and fragile. Styrofoam boxes cut moisture loss but led to more rot.
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DID YOU KNOW? Kangina grape storage is a traditional method used to preserve harvested grapes for extended periods without refrigeration. After harvesting, grapes are cleaned and sometimes lightly dried before being stored in cool structures, often made of mud, that maintain a stable temperature and protect the fruit from pests and humidity. The technique slows down spoilage and allows farmers to extend the marketability of their grapes, especially in regions where cold chain infrastructure is limited. NOW YOU KNOW!
Walking Floors: Unloading Without Tipping
A moving-floor trailer unloads itself through the back doors without tipping. The floor is made of long slats, usually aluminum, split into three interleaved groups and driven by hydraulic cylinders under the trailer. All the slats slide rearward together, carrying the load a short distance. Then the groups pull forward one at a time. Because two-thirds of the floor is always holding still, friction keeps the load from sliding forward with the moving third. Repeating the cycle 'walks' the cargo out the back. 'WALKING FLOOR' is a trademark of KEITH Manufacturing of Oregon. Its founder, Keith Foster, introduced the first commercially viable all-hydraulic moving floor for semi-trailers in 1973, and other makers sell similar 'moving floor' or 'live floor' systems. Because the trailer never tips, it can unload under low roofs or on uneven ground. It's widely used for wood chips, bark, biomass, waste, scrap, recycling and farm produce.
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DID YOU KNOW? Walking floors in truck beds are a specialized type of moving floor system, designed to unload bulk materials efficiently without tipping the trailer. The floor is made of a series of interlocking slats that move in a continuous sequence, pushing cargo such as wood chips, agricultural products, or waste toward the rear of the truck while the upper surface stays level for stability.
Tanzanian Half-Moons: Crescents That Catch the Rain
Half-moons are semi-circular bunds, called demi-lunes in Francophone Africa. Each is a shallow basin dug in a crescent, with the dug-out soil piled into a low curved bank on the downslope side and the open side facing uphill. They're laid out in staggered rows along the contour so rain running off hard, crusted ground pools in each crescent and soaks in instead of washing away. FAO's water-harvesting manual describes them as a modern technique, not a traditional one, and gives an example from Niger's Tahoua region in the mid-1980s. Sizes vary from about 2 m in radius for crops and trees to 6-20 m for rangeland. In northern Tanzania, the Dutch nonprofit Justdiggit works with LEAD Foundation, Trias and Maasai communities in the Arusha and Manyara regions. It reports more than 50,000 'water bunds' dug there, along with grass seed banks and tree regrowth from old stumps. Results depend on rain, seeding and grazing control. A 2024 remote-sensing study of Kenyan and Tanzanian sites found mixed vegetation changes, and Justdiggit's own evaluation flags overgrazing as a risk.
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DID YOU KNOW? In Tanzania, particularly in regions like Arusha, communities use half-moon pits, shallow crescent-shaped depressions dug along land contours to combat desertification and restore degraded soil. These pits, typically a few meters wide, capture rainwater otherwise runoff, allowing it to seep into the soil and provide moisture for plants and seeds. Over time, this simple technique transforms barren land into productive grasslands.
Atomic Stop-motion: A Cartoon Drawn in Molecules
IBM Research released 'A Boy and His Atom' on April 30, 2013, and Guinness World Records certified it as the world's smallest stop-motion film. Scientists at IBM's Almaden lab in San Jose used a scanning tunneling microscope (STM) to drag carbon monoxide molecules across a copper surface, one frame at a time. The microscope ran at about -268 °C (5 K), cold enough to hold the molecules in place, and magnified the surface more than 100 million times. Each CO molecule shows up as a dot. The team made 242 frames, each 45 by 25 nanometers, and Guinness says they did it between January 29 and February 6, 2013. Four researchers worked 18-hour days for about two weeks, using a few dozen molecules. Guinness describes the animation as 60 seconds long; the YouTube upload runs 1 minute 33 seconds with titles and credits. The film was outreach for IBM's atomic-scale data storage research, which in 2012 stored one bit of data in 12 atoms.
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DID YOU KNOW? A Boy & His Atom is a fascinating nano stop-motion film made by IBM Research in 2013 that holds the Guinness World Record for the smallest stop-motion movie ever created. The 1 minute and 33 second film uses carbon monoxide molecules, which are two-atom molecules, that are moved frame by frame on a copper surface using a scanning tunneling microscope, or STM. NOW YOU KNOW!
Ant Rafting: A Colony That Floats
Red imported fire ants (Solenopsis invicta) come from the flood-prone wetlands of Brazil. When water rises, a colony can link itself into a floating raft that carries workers, brood and the queen. In a 2011 PNAS study, Mlot, Tovey and Hu of Georgia Tech filmed raft-building and measured how it works. Ants grip each other jaw-to-leg and leg-to-leg. A single ant's cuticle is only mildly water-repellent, but linking together boosts the colony's water repellency, much like weaving a waterproof fabric. Air trapped around and between the ants cut the raft's average density by about 75%, to about 0.2 g/mL. That trapped air also lets the ants on the bottom breathe, so they rarely drown. About half the ants form the bottom layer. Ants on top walk to the edge and get trapped there by their neighbors, which is how the raft grows. The paper describes rafts floating for days, and Hu's group told reporters they can last up to about three weeks, though most begin to fall apart after a week. Ants also build bridges, ladders and chains in the same way.
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DID YOU KNOW? When floods threaten their colonies, fire ants perform one of nature's most remarkable survival feats. They build living bridges and rafts out of their own bodies! By linking their legs and jaws together, thousands of ants form a buoyant, interlocking structure that can float for weeks on water. The ants on the bottom grip tightly while trapping air pockets between them, creating a waterproof layer that keeps the colony afloat. Others move freely across the surface to stabilize or repair the raft as it drifts. NOW YOU KNOW!
State Flag Square: Baku's State Flag Square Flagpole Stands 162 Meters Tall
State Flag Square in Baku, Azerbaijan, opened on September 1, 2010, on the Caspian Sea shore. Its flagpole is 162 meters (531 feet) tall and was briefly the world's tallest before being surpassed in 2011. The flag was raised to mark national independence and identity. The footage, credited to an account whose name is partly obscured on screen (RealRo...k), shows the flag over the city.
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Did you know the Azerbaijani national flag at State Flag Square in Baku is a striking symbol of national pride Flying atop one of the tallest flag poles in the world at 162 meters or 531 feet unfurled against the Caspian Sea backdrop State Flag Square itself inaugurated in 2010 was designed to celebrate independence and national identity NOW YOU KNOW!
BAPS NJ: Carved in India, Built in New Jersey
BAPS Swaminarayan Akshardham, in Robbinsville Township, New Jersey, was built by the Hindu organization Bochasanwasi Akshar Purushottam Swaminarayan Sanstha (BAPS). It was formally dedicated on October 8, 2023, and opened to the public on October 18. The AP called it the largest Hindu temple built outside India in the modern era, and NBC News called it the largest in the U.S. The 183-acre figure (NBC also cites 185) is for the whole campus, not the mandir building. Work began in 2011, so construction took about 12 years. BAPS says about 12,500 volunteers took part. About 2 million cubic feet of stone was used, and a 2023 report counted about 4.7 million hours of artisan and volunteer work. The stone came from several countries, including Bulgarian and Turkish limestone, marble from Italy, Greece and Turkey, granite from India and China, and Indian sandstone. It was carved by artisans in India, dry-fitted there, then shipped about 8,000 miles to New Jersey for assembly. A 2021 federal lawsuit by workers who came on religious visas alleged forced labor and very low pay. BAPS says the artisans were religious volunteers. Twelve of the original plaintiffs withdrew their claims in October 2023, and the lawsuit is ongoing.
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DID YOU KNOW? In Robbinsville, New Jersey, stands the BAPS Swaminarayan Akshardham, the largest Hindu temple in the United States and one of the most intricate outside of India. Completed in 2023 after nearly a decade of work by over 12,000 volunteers, the temple spans 183 acres and was hand-carved from Italian marble, Indian sandstone, and limestone before being assembled like a massive 3D puzzle. NOW YOU KNOW!
ProsperiTree: 98,000 Leaves of Gold and Brass
The Tree of Prosperity is a free kinetic show in the Rotunda of Wynn Macau, on the Macau peninsula. It isn't at Wynn Palace, the company's newer resort in Cotai. Macao's tourism office and Wynn describe an 11 m (about 38 ft) tree with 60 main limbs, more than 2,000 branches and 98,000 leaves made of 24-karat gold leaf and brass leaf, so the leaves aren't solid gold. During each show, a Chinese zodiac ceiling opens like an iris to reveal a 20 m LED screen and a crystal chandelier, and the tree rises from below the floor and turns to music while lights cycle through the seasons. A 2008 trade report credits mechanical engineering to McLaren Engineering, fabrication to Show Canada in Montreal and automation to Stage Technologies. The show's integrator dates the Tree of Prosperity show to 2006 and says a Dragon of Fortune show was added in 2010; the two alternate in the Rotunda. I found no source naming a designer 'Kevin McCurdy' or giving a cost of 'HKD 2 billion'.
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DID YOU KNOW? The Tree of Prosperity at Wynn Palace, in Macau, is a stunning centerpiece that combines art, technology, and cultural symbolism. Standing at 38 ft tall, this golden tree boasts 98,000 meticulously crafted leaves made of 24 karat gold, symbolizing wealth and good fortune. Designed by renowned designer Kevin McCurdy, the tree rises from the floor in a dramatic display. The installation, which cost over HKD 2 billion to create, is a testament to luxury and craftsmanship. NOW YOU KNOW!
Buoyancy Bridge II: A Road That Floats
The Shiziguan floating bridge, nicknamed 'Langqiao Yimeng' after the Chinese title of 'The Bridges of Madison County', is in the Shiziguan Scenic Area, Zhushan Town, Xuan'en County, Enshi Prefecture, Hubei. It sits on water held back by the Shiziguan hydropower project, which since 2002 has dammed the Hongjia River (Hongjiahe), between steep hills. The deck has no fixed foundation. Pine joists and treated wooden planks sit on plastic floats and are held in place by underwater anchoring. Construction began in early 2015 and it opened in 2016. Scenic-area material gives its length as 400 m, while the official accident investigation gives 318 m, with a 4.5 m width and a 20 km/h speed limit. On May 16, 2023, a nine-seat van carrying eight people skidded through the railing on a bend and fell into the water, and five people died. Investigators found the van was going over the speed limit on a wet deck and that the scenic area had let vehicles above its size limit onto the bridge. The scenic area closed and reopened on December 28, 2024, after upgrades.
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DID YOU KNOW? The Shiziguan Floating Bridge in Enshi, China, is a stunning engineering that stretches across a serene section of the Hongshui River, appearing to float effortlessly on the water's surface. Built from hundreds of interconnected pontoons, the bridge flexes gently with the movement of the river, creating the surreal feeling of driving or walking across liquid glass. NOW YOU KNOW!
Vertical Farming: Roots in Thin Air
In aeroponics, plant roots hang in the air inside a closed chamber and are sprayed or misted with nutrient solution. Aeroponic towers stack plants up a vertical column, with a pump lifting the solution to the top so it sprays or trickles down over the roots. NASA worked with AgriHouse on aeroponic research for space crops. A 2006 NASA Spinoff article reported up to 98% less water, 60% less fertilizer and no pesticides compared with soil growing, and yields 45-75% higher. Those figures come from NASA and the company, not independent field trials. Towers like those in the footage do best with leafy greens and herbs. The big catch for indoor vertical farms is energy for lighting and climate control, according to the National Center for Appropriate Technology (NCAT). Several heavily funded companies have struggled: AeroFarms filed for Chapter 11 bankruptcy in 2023, and Bowery Farming shut down in November 2024.
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DID YOU KNOW? Aeroponic towers are vertical farming systems that grow plants without soil, instead suspending roots in the air and misting them with nutrient-rich water. This method maximizes oxygen exposure to the roots while delivering precise hydration and nutrition, leading to faster growth and higher yields with minimal water use compared to traditional agriculture. NOW YOU KNOW!
Hajwala: A Drift Culture the Law Bans
Hajwala is a Gulf term for reckless, show-off street driving. Its best-known form, high-speed drifting, is called tafheet in Saudi Arabia. In 'Joyriding in Riyadh' (Cambridge University Press, 2014), based on four years of fieldwork, the scholar Pascal Menoret traces it to Riyadh. It emerged after the city was planned around wide roads and oil reshaped the economy, and young men, many of them rural migrants, took it up as a way to claim urban space. Drivers spin and slide cars, sometimes rented or stolen, on public avenues and highways in front of crowds. Gulf News dates the culture to the 1970s. It's illegal. Saudi traffic authorities treat drifting as a serious offense. Penalties announced in 2016 rose from SR20,000 and impoundment for a first offense up to SR60,000, possible jail and permanent confiscation for repeat offenses. Riyadh traffic police said in 2025 that fines reach SR60,000, with impoundment and referral to court. The footage includes a car tipped up on two wheels on a highway, a stunt that's part of the same culture.
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DID YOU KNOW? Hajwala is a high-energy street driving style that began in Saudi Arabia and spread across the Middle East, where drivers guide ordinary cars into long sliding drifts across wide desert highways. Unlike formal motor sports, Hajwala developed as a spontaneous form of expression with drivers showcasing their control, timing, and flare in front of crowds of spectators. NOW YOU KNOW!
The Kaaba: The Direction of Daily Prayer
The Kaaba stands at the center of the Masjid al-Haram (the Sacred Mosque, often called the Great Mosque) in Mecca, Saudi Arabia, and is the most sacred site in Islam. Islamic tradition holds that the Prophet Ibrahim (Abraham) and his son Ismail (Ishmael) built it as a house for the worship of one God. It's roughly cube-shaped, about 13.1 m high, 12.8 m long and 11.03 m wide. The structure has been rebuilt several times in its history, and the 1629 reconstruction used large granite blocks. The Black Stone is set in its eastern corner. The Kaaba is the qibla, the direction Muslims face in prayer. During Hajj and Umrah, pilgrims perform tawaf, walking around it seven times counterclockwise. Its covering, the Kiswah, is made each year at the King Abdulaziz Complex for the Holy Kaaba Kiswa in Mecca. It's black natural silk embroidered with Qur'anic verses in silver thread plated with gold, weighs around 1,400 kg, and in recent years has been changed at the start of the Islamic new year, on 1 Muharram.
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DID YOU KNOW? The Kaaba located at the center of the Great Mosque in Mecca, Saudi Arabia, is a cube-shaped granite structure considered the holiest site in Islam, believed by Muslims to have been originally built by the Prophet Abraham and his son Ishmael as a house of monotheistic worship. Draped in a black silk cloth embroidered with gold known as the Kiswah, the Kaaba is the focal point of the Hajj pilgrimage and the qibla, the direction Muslims around the world face during daily prayers. NOW YOU KNOW!
Solar Sailing: This Spacecraft Is Pushed by Sunlight Alone
Light has no mass but does carry momentum. When photons bounce off a mirror-like sail, they push it twice: once when they arrive and again when they reflect. The force (solar radiation pressure) is tiny, so sails have to be huge and spacecraft light. In the vacuum of space, though, the push never stops. Japan's IKAROS first flew a solar sail between planets in 2010. The Planetary Society's LightSail 2 showed a CubeSat could raise its orbit with sunlight, and NASA's ACS3 (launched April 23, 2024) is testing lightweight carbon-fiber booms for an 80 m² sail. By tilting the sail, a craft can speed up, slow down or 'tack' to change its orbit.
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DID YOU KNOW? Solar sails are a method of spacecraft propulsion that use large, reflective sheets to harness the momentum of photons streaming from the sun. Although each photon has no mass, its tiny push of momentum accumulates over vast areas and time, gradually accelerating the spacecraft without the need for fuel. NOW YOU KNOW!
UV Face: Under UV, Sunscreen Goes Dark
A UV camera records ultraviolet light bouncing back from a scene. Sunscreen filters stop most of that UV from reaching the skin and bouncing back, so covered skin looks dark and bare skin looks lighter. A 2016 study by Cole and colleagues measured the mineral filters zinc oxide and titanium dioxide. Despite the old 'physical blocker' label, they reflected only about 4-5% of UV, and the rest of their protection came from absorption. Above their absorption edge, in long UVA and visible light, they mainly reflect, which is why thick mineral sunscreen can look white. Organic ('chemical') filters also absorb UV. The camera's look has a practical use. In a 2017 University of Liverpool study, UV imaging of 57 people showed sunscreen was missed on about 14% of the eyelid region, compared with about 7% of the rest of the face. Under UV light, skin pigmentation such as freckles also shows up more strongly.
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DID YOU KNOW? Through a UV light camera sunscreen appears as a dark or black mask on the skin because its active ingredients such as zinc oxide, titanium dioxide, or chemical UV filters absorb or block ultraviolet radiation that the camera detects, while untreated skin reflects UV and shows up in lighter shades. NOW YOU KNOW!
Murmuration: Seven Neighbors Steer the Flock
Murmurations are the swirling pre-roost flocks of common starlings (Sturnus vulgaris), usually seen on autumn and winter evenings. In 2008, the STARFLAG team in Rome reconstructed flocks of thousands of birds in 3D. They found each starling responds to a fixed number of nearest neighbors, about six or seven, rather than to every bird within a set distance. This 'topological' rule helps a flock stay together even as its density changes sharply under attack. A 2017 citizen-science study by Goodenough and colleagues analyzed thousands of UK reports. It found murmurations were bigger and lasted longer when predators such as peregrine falcons and sparrowhawks were around, which supports the 'safety in numbers' explanation. The study found little support for the idea that birds gather to keep warm. Studies of falcon attacks show waves of dark and light rippling away from the predator, and more waves were linked to fewer successful attacks. The idea that murmurations share information about feeding sites is still only a hypothesis.
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DID YOU KNOW? A starling murmuration is the mesmerizing aerial display created when thousands of starlings swoop and swirl in synchronized patterns, moving as if they were a single living cloud. These flocks form at dusk, often near roosting sites, and scientists believe the behavior offers safety in numbers against predators like falcons, as well as communication about good feeding grounds. Each bird follows simple rules, keeping a set distance, matching speed, and aligning with its neighbors. NOW YOU KNOW!
Spacewalker: No Tether, 320 ft Out
On February 7, 1984, during shuttle mission STS-41B, Bruce McCandless II made the first untethered free flight in space. He was flying NASA's Manned Maneuvering Unit (MMU), a backpack propelled by nitrogen gas jets and steered with hand controllers. NASA says he flew out to 150 ft, came back, then flew out to about 320 ft (about 98 m) from Challenger before returning. Crewmate Robert L. Stewart flew the same MMU later in that spacewalk, so both men made untethered flights on the mission's first EVA. The flights were practice for repair and retrieval work. Two satellites deployed on STS-41B ended up in useless orbits, and in November 1984, STS-51A astronauts Joseph Allen and Dale Gardner used MMUs to help capture them. That was the last time the MMU flew. Later shuttle spacewalkers stayed tethered, with the smaller SAFER unit as a backup.
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DID YOU KNOW? The first untethered spacewalk took place on February 7th, 1984 when NASA astronaut Bruce McCandless II floated free of the space shuttle Challenger using the Manned Maneuvering Unit, or MMU, a nitrogen-powered backpack that allowed him to pilot himself without safety lines. He drifted up to 100 meters away from the shuttle, a record distance at the time, and controlled his movement with hand operated thrusters, demonstrating that astronauts could maneuver independently in orbit for repairs, satellite retrieval, or construction. NOW YOU KNOW!
Around the Rainbow: Rainbows Are Secretly Circles
A rainbow isn't an object in a fixed place. It's a pattern of light that appears when sunlight enters falling drops, bends (refracts) going in, reflects once off the back of each drop, and bends again on the way out. Different colors leave at slightly different angles, so the drops that send light to your eye all sit about 40 to 42° from the antisolar point. That's the point directly opposite the sun, which is always where the shadow of your head falls. Every point on a circle at that angle around your shadow sends rainbow light to you, so the primary rainbow is a ring, red on the outside and violet on the inside. From the ground, the antisolar point is below the horizon whenever the sun is up. You see only the part of the circle above the ground, and only if there are raindrops there. When the sun is right on the horizon you get a half circle, and the higher the sun, the smaller the arc. Once the sun is higher than about 42°, no primary bow appears at ground level. From an airplane, a mountain or a tall building, drops can lie below you too, so you can sometimes see the whole ring. A glory is a different effect: smaller, tighter colored rings around the shadow of an aircraft on cloud. The footage shows a bright rainbow arcing down past the horizon toward the water below, filmed from high above a waterfront.
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DID YOU KNOW? Rainbows are often seen as arcs from the ground, but in reality they are full circles of refracted and reflected light with the horizon blocking the bottom half from view. From high vantage points observers can sometimes see the entire circle because the Earth's surface no longer cuts off the view, revealing the rainbow's true geometry. NOW YOU KNOW!
Tree Scaling: Snakes That Climb Straight Up
Climbing a vertical trunk is hard for an animal with no limbs, and biologists have studied how snakes do it in detail. In a 2020 review, Bruce Jayne of the University of Cincinnati described arboreal concertina locomotion. The snake grips a cylinder with alternating left and right bends, and keeps a grip with the uphill part of its body before letting go with the downhill part. It then stretches forward and pulls the rest of its body up. Concertina is reliable, but slow and energetically costly. On rough bark or among twigs and branches, snakes can also use lateral undulation, pushing against bumps and side branches with a wave that passes along the body. This needs something to push against; it doesn't work on smooth surfaces. In 2021, a team including Thomas Seibert, Julie Savidge and Jayne described a new mode in Current Biology called lasso locomotion. Brown tree snakes (Boiga irregularis) on Guam wrapped a single loop around smooth poles too wide for concertina, then inched upward by small bends moving within the loop. The discovery came from efforts to keep the invasive snakes away from nests of endangered birds. The footage shows a snake gripping a pale, smooth trunk at night with tight coils and moving up in stages. The source doesn't identify the species.
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DID YOU KNOW? Snakes climb trees by using a combination of muscular strength, flexibility, and specialized movement patterns that allow them to grip and push against the bark. Many employ a concertina motion where parts of the body anchor tightly against the surface while other sections extend forward, then pull the rest along. Some species use lateral undulation, pressing their scales against rough bark or branches in wave-like movements to gain traction. NOW YOU KNOW!
Blood Watch: Watching Blood Flow Live
Intravital microscopy means looking at living tissue inside a living animal, and blood flow was one of the first things it revealed. In 1661, Marcello Malpighi used a microscope on a frog's lung and described capillaries, the tiny vessels linking arteries and veins. In 1839, Rudolph Wagner watched white blood cells roll slowly along vessel walls in a frog's webbed foot. Thin, transparent tissues such as a frog's web, a tadpole's tail or a fish's fin let ordinary bright-field microscopes show red blood cells streaming through capillaries in real time. Plasma, the liquid part of blood, is transparent, so it can't be seen directly. Researchers make it visible by injecting fluorescent tracers, such as FITC-dextran, that stay in the bloodstream and light up the vessels. Modern intravital imaging relies on fluorescence. Labeled antibodies, dyes or genetically encoded fluorescent proteins mark particular cells, and confocal and two-photon microscopes take sharp optical sections. Two-photon microscopy reaches deeper into tissue with less light damage, which is why it's widely used to film immune cells in living mice. In mammals, the small cells that help blood clot are platelets. Fish, amphibians and birds have nucleated thrombocytes instead, and their red blood cells also keep a nucleus. The footage shows transparent tissue with dark pigment cells and branching vessels where blood cells can be seen moving. The source doesn't identify the animal.
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DID YOU KNOW? Microscopes can be used to observe blood flow in real time by employing high-resolution imaging techniques such as intravital microscopy, which allows visualization of living tissues in situ. Using bright-field, fluorescence, or confocal microscopy, researchers can track red blood cells, platelets, and plasma as they move through capillaries and larger vessels. Fluorescent dyes or genetically encoded markers often highlight specific cell types or plasma components. NOW YOU KNOW!
Solar Prominence: Magnetic Fields Hold Rivers of Plasma Above the Sun
A solar prominence is a huge loop of relatively cool, dense plasma (electrically charged hydrogen and helium) hanging in the sun's million-degree corona. Twisted magnetic fields rooted in the photosphere hold it up. Prominences form in about a day and can sit quietly for months, looping hundreds of thousands of miles above the surface. When the magnetic structure becomes unstable, the prominence erupts and usually becomes the bright core of a coronal mass ejection (CME). CMEs can carry billions of tons of material at speeds from under 250 km/s to nearly 3,000 km/s, and the fastest Earth-directed ones arrive in 15 to 18 hours.
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DID YOU KNOW? Solar prominences are gigantic arcs of glowing plasma that erupt from the sun's surface, anchored to the photosphere by strong magnetic fields and looping far into the Corona. When they break free, these so-called "eruptive" prominences release billions of tons of charged particles into space, often at speeds of hundreds of kilometers per second, forming coronal mass ejections that can travel toward Earth. NOW YOU KNOW!
Hair Barrier: Your Arm Hair, on Guard?
The best-known experiment on this idea didn't use mosquitoes. In 2011, Isabelle Dean and Michael Siva-Jothy at the University of Sheffield published a study in Biology Letters using 29 volunteers, each with one arm shaved and one unshaved. They released bed bugs (Cimex lectularius) onto each arm. On unshaved arms, the bugs took longer to find a place to feed, and volunteers noticed them more often. People with more hair were better at detecting the bugs. The authors suggested that fine body hair may persist partly because it helps people sense parasites. Mosquitoes are different, because they fly in and land rather than crawl across the skin. They find people mainly through exhaled carbon dioxide, body heat and skin odor; a 2022 study in Cell linked 'mosquito magnet' status to higher levels of carboxylic acids on the skin. A 1976 laboratory study of Anopheles gambiae landings on volunteers' forearms found that forearm hair density, along with skin temperature, humidity and color, explained very little of the variation in which person mosquitoes chose. So the idea that hair helps you feel a crawling insect has experimental support, but only for bed bugs. That it makes mosquitoes land less or bite less hasn't been shown. The footage shows a mosquito walking through dense arm hair.
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DID YOU KNOW? Body hair provides a subtle, but effective defense against mosquitoes by creating a physical barrier that makes it harder for the insects to land directly on the skin and find a secure biting site, though the protection is partial rather than complete. The hairs also act as sensory detectors, amplifying the feeling of an approaching mosquito so a person can swat it away before it bites. NOW YOU KNOW!
Kazotsky Kick: Squat, Kick, Repeat
'Kazotsky Kick' is the name of a group taunt in Valve's game Team Fortress 2. It was added on July 2, 2015, in the Gun Mettle Update. Any class can perform it, and other players can join in. The official TF2 Wiki calls it a hopak set to a fast folk tune, with variations for each class. The step itself is the prisyadka (also spelled prysiadka), a squat step in which the dancer drops onto the balls of the feet and kicks the legs out one at a time while keeping the back straight. The squat-kick step comes from folk dance of the former Russian Empire and Soviet Union, including the Russian prisyadka and the Ukrainian hopak; the game wiki calls the taunt a hopak. Britannica traces the hopak to the Zaporozhian Cossacks and describes improvised leaps, squatting kicks and turns, and Dictionary.com calls the prisiadka the signature step of the kazachok, a Cossack-style dance. The name 'Kazotsky' isn't a traditional dance name; it's best known from the game. The footage shows men in Soviet-style military uniforms doing squat kicks in what appears to be a colorized archival film. The source doesn't identify the clip, so the case doesn't either.
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DID YOU KNOW? The Kazotsky Kick is a traditional Russian squat dance move that gained global recognition through the video game Team Fortress 2, where it was featured as a character taunt. It involves lowering into a deep squat and rhythmically kicking one leg forward while balancing on the other, often alternating legs in time with fast-paced folk music. NOW YOU KNOW!
Rainbow Mountains: Stripes at 5,000 Meters
Peru's best-known 'rainbow mountain' is Vinicunca (Winikunka), also called Montaña de Siete Colores ('Mountain of Seven Colors'). It's in the Vilcanota range of the Cusco region, about 100 km southeast of the city of Cusco, between the districts of Pitumarca and Cusipata. Peru's official tourism inventory gives an altitude of 5,036 m, and the top viewpoint is listed at over 5,200 m. The stripes are tilted layers of marine, lake and river sediments laid down roughly 65 to 2 million years ago, then folded and lifted as the Andes rose. Erosion exposed them, and oxidation brought out their colors. The Cusco cultural landscape office, as reported by BBC Mundo, matches each color to its rock. Pink comes from red clay, mudstone and sand. White is quartz sandstone and limestone or marl. Red is iron-bearing claystone. Green is clay rich in iron and magnesium. Mustard yellow is calcareous sandstone rich in sulfur minerals. Brown is magnesium-rich fanglomerate, a rock made of cemented fan gravel. BBC Mundo also mentions copper oxide in the green layers, but neither source mentions copper sulfates. The mountain sits in lands of the Quechua farming communities of Pampachiri and Chillihuani and is regarded locally as a sacred apu (mountain spirit). The footage shows drone views of the striped slopes in mist.
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DID YOU KNOW? Peru's Rainbow Mountains are striking geological formations known for their vivid stripes of red, yellow, green, and turquoise created by layers of mineral-rich sediment exposed by tectonic uplift and erosion, sitting at over 5,000 m or 16,400 ft above sea level. The mountains' colors come from iron oxide, the reds, copper sulfates, the greens, and other minerals that oxidized over millions of years. NOW YOU KNOW!
Fissure Flames: Volcanoes That Unzip
A fissure eruption happens when a dike, a vertical sheet of magma forced up through the crust, reaches the surface along a crack. Lava then erupts from many points along a line at once, often as a row of lava fountains that the USGS calls a 'curtain of fire'. Most fissure eruptions involve runny basalt and are effusive, meaning lava pours out rather than exploding. The National Park Service rates them at 0 to 1 on the Volcanic Explosivity Index. So the main products are lava fountains, spatter and gas, not big ash columns. Spatter piling up along the crack builds low ramparts and spatter cones, so a fissure can leave a row of small craters rather than one tall cone. Fissures range from a few hundred meters to tens of kilometers long. Iceland's Laki (Lakagígar) eruption began on June 8, 1783, from a fissure system about 27 km long with more than 130 craters. Feeder dikes for the Columbia River flood basalts reach as much as 180 km. Fissure eruptions are common where plates pull apart, as in Iceland, which sits on the Mid-Atlantic Ridge. They also happen along rift zones on the flanks of hot-spot shield volcanoes like Kīlauea and Mauna Loa, and in volcanic fields in the middle of continents. The footage shows a line of lava fountains beside a gas plume, with a fresh lava field on either side. The source doesn't name the eruption, so the case doesn't either.
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DID YOU KNOW? Volcanic fissures are long cracks in the Earth's crust through which magma, gas, and ash erupt, often forming dramatic linear vents instead of centralized volcanic cones. These fissures can stretch for several kilometers and occur where tectonic plates are pulling apart, such as along mid-ocean ridges or rift zones. NOW YOU KNOW!
Aquatic Ambulances: Ambulances That Ride the Canals
In Venice's historic center and the islands of its lagoon, emergency calls to Italy's 118 number are answered by idroambulanze, water ambulances run by the local emergency medical service SUEM 118. The boats in the footage are yellow, with red-and-yellow checks and the word 'AMBULANZA'. They are fast motorboats with a covered cabin for a stretcher patient and equipment much like a land ambulance: oxygen, a monitor and defibrillator, and stretchers. Italian sources describe the usual crew as a boat pilot, two healthcare workers and a nurse, with an emergency doctor joining for the most serious ('red code') calls. Italy has no separate 'paramedic' profession like the U.S. or UK, so nurses lead the clinical care. Local reporting has put the service at about 18,000 call-outs a year across the lagoon. It has run seven boats, with several on standby at once, based at the city's main hospital, the Ospedale Civile (SS. Giovanni e Paolo). Getting a patient from a narrow canal or a house without a nearby landing usually means carrying them by stretcher through the streets to the boat. A 2023 paper in the European Journal of Emergency Medicine described the service's unusual conditions.
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DID YOU KNOW? In Venice, Italy, where canals replace roads, ambulances are specially designed motorboats equipped to provide emergency medical services and navigate quickly through the narrow waterways. These ambulances are staffed with paramedics and carry stretchers, defibrillators, and other life-saving equipment, functioning much like land ambulances but adapted for the city's unique geography. NOW YOU KNOW!
Three Gorges: The World's Biggest Power Plant
The Three Gorges Dam crosses the Yangtze at Sandouping, near Yichang in Hubei province, China. By installed capacity it's the world's largest power station: 22,500 MW from 32 main 700 MW generators plus two 50 MW units that power the plant itself. The concrete gravity dam is about 2.3 km long, 2,309.5 m along its axis or 2,335 m by another measure. Its maximum height is 181 m, and its crest sits at 185 m above sea level, which is where the Reel's '185 m' comes from. The reservoir normally holds water at 175 m. Construction formally began in December 1994. The dam body was finished in 2006, and Guinness dates the last main generator to July 4, 2012. The whole project wasn't certified complete until 2020, after the ship lift and other works. Output depends on river flow. The design target is 88.2 TWh a year, and in 2020 it set a world record of 111.8 TWh for a single hydropower plant. Besides power, the project is meant for flood control and navigation, through a five-step double ship lock and a ship lift that raises vessels up to 113 m. According to Reuters, about 1.3 million people were relocated to make way for the reservoir.
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DID YOU KNOW? The Three Gorges Dam spanning the Yangtze River in Hubei province, China, is the largest hydroelectric power station in the world, stretching about 2.3 km or 1.4 mi long, and standing 185 m or 607 ft tall. Completed in 2012, it has a generating capacity of 22,500 MW, capable of producing nearly 100 TWh of electricity annually. NOW YOU KNOW!
Paint Removers: Two Solvents, Very Different Risks
Methylene chloride (dichloromethane) was long the main ingredient in fast-acting paint strippers. It is a small, very volatile molecule that soaks into a paint film, swells and softens it, and loosens it from the surface so it can be scraped off. It's also acutely dangerous. Its vapor builds up quickly in enclosed spaces, and the U.S. Environmental Protection Agency (EPA) has documented dozens of deaths, many of them workers refinishing bathtubs. EPA put the figure at at least 88 people since 1980. EPA banned methylene chloride in consumer paint and coating removers from November 22, 2019. On April 30, 2024, it finalized a ban on all consumer uses and most industrial and commercial uses under the Toxic Substances Control Act, with consumer uses phased out within about a year and most commercial uses within two years. EPA also lists liver harm and several cancers among the risks. Acetone is a different kind of solvent. It evaporates very fast and dissolves some finishes, such as lacquers, many adhesives and nail polish, but it doesn't lift tough cured coatings as well, which is why it's often mixed with other solvents. It's highly flammable. The footage shows stripper being brushed onto painted metal and the paint bubbling off.
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DID YOU KNOW? Methylene chloride and acetone are powerful organic solvents often used in paint removal, though with very different profiles. Methylene chloride is the active ingredient in many commercial paint strippers, penetrating and breaking down the chemical bonds in resins and binders so paint can be scraped away, while acetone is a fast-evaporating, less aggressive solvent that dissolves certain paints, varnishes, and adhesives. NOW YOU KNOW!
Bdelloid Rotifers: No Males for Millions of Years
Bdelloid rotifers (class Bdelloidea) are microscopic animals, usually well under a millimeter long. They live in fresh water and also in damp moss, lichen and soil films that often dry out. In a 2000 paper in Science, they were called the largest animal group in which males, hermaphrodites and meiosis are unknown. Females produce daughters from unfertilized eggs (parthenogenesis). Genetic studies suggest the group may have done without conventional sex for many millions of years, though 'ancient asexuality' is still debated. Bdelloids carry an unusually high share of genes picked up from bacteria, fungi and plants by horizontal gene transfer. A 2015 study estimated about 13 new foreign genes per lineage per million years, with more in species from habitats that often dry out. A 2018 reanalysis, however, found that claims of DNA swaps between bdelloid individuals came from sample contamination. When their habitat dries, bdelloids contract into a 'tun' and enter anhydrobiosis, a dried, dormant state, and revive when water returns. The best-documented dry survival is about 9 years in stored moss. In 2021, researchers revived an Adineta rotifer from Siberian permafrost dated to about 24,000 years old, though it had been frozen rather than dried, and it went on to clone itself in the lab.
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DID YOU KNOW? Bdelloid rotifers are microscopic freshwater invertebrates remarkable for their ability to survive extreme conditions, and for reproducing exclusively through parthenogenesis, with no males observed in over 80 million years. They can enter a desiccated, dormant state called anhydrobiosis, enduring decades without water. NOW YOU KNOW!
UV Curing: Liquid to Solid in Seconds
UV curing is photopolymerization. A UV-curable ink, coating or adhesive is a liquid mix of small reactive molecules (monomers and oligomers) plus a few percent of photoinitiator. When the photoinitiator absorbs UV light, it breaks apart into reactive species that link the molecules into a solid, crosslinked network, often within a fraction of a second to a few seconds. There are two main chemistries. Free-radical systems, mostly acrylates, form radicals and stop curing almost as soon as the light goes off, and oxygen in the air can slow them at the surface. Cationic systems, mostly epoxies, form a strong acid and can keep curing after the light is gone, which is called 'dark cure'. The light source matters. Traditional mercury-vapor lamps emit a broad spectrum that includes a lot of infrared heat. UV LEDs emit a narrow band, often near 365-395 nm, and produce much less heat, but the formula has to include a photoinitiator that absorbs at that wavelength. Because there's little or no solvent to dry off, UV curing is fast and usually uses less energy than heat drying. The trade-off is that the light has to reach the material, which is why UV-cured pipe liners need translucent glass-fiber tubes (see CIPP).
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DID YOU KNOW? UV light curing is a process where ultraviolet radiation rapidly hardens or cures materials like adhesives, coatings, and inks by triggering a photochemical reaction. When exposed to UV light, specialized photoinitiators in the material absorb the energy and generate reactive species that start polymerization, transforming liquid resins into solid polymers within seconds. This technique offers fast curing times, energy efficiency, and minimal heat generation. NOW YOU KNOW!
Earth Movers II: The Biggest Digger on Earth
Bagger 293 is a bucket-wheel excavator built by TAKRAF of Leipzig, Germany. It went into service on July 7, 1995, at RWE's Hambach open-pit lignite (brown coal) mine near Cologne. Guinness World Records lists it as the largest and heaviest land vehicle, meaning the biggest machine that moves under its own power. Guinness gives 14,196 tonnes, 220 m long and 94.5 m tall, while other sources give about 14,200 t, 225 m and 96 m. The 21.6 m wheel carries 18 buckets. As it turns, the buckets cut into the mine face and dump onto conveyor belts that carry the earth away. Guinness puts each bucket at 6,600 liters (6.6 m³), but other sources say about 15 m³. It can move 240,000 cubic meters of earth a day. That's a volume, not a weight: at typical soil densities it's well over 200,000 tonnes. It mostly digs overburden, the soil and rock above the coal. It runs on about 16.5 MW of outside electricity through a cable, crawls on 12 caterpillar tracks at a few meters a minute, and needs a crew of five.
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DID YOU KNOW? The Bagger 293, built by German company TAKRAF, is the largest land vehicle in the world, a bucket-wheel excavator standing 315 ft tall, stretching 738 ft long, and weighing about 14,200 tons. Designed for open pit mining, it uses its gigantic rotating wheel with 18 buckets, each holding over 15 cubic meters, to scoop up to 240,000 tons of material per day. NOW YOU KNOW!
Tesla Diner: Burgers, Movies and 80 Chargers
The Tesla Diner opened on July 21, 2025, at 7001 Santa Monica Blvd. in Hollywood, Los Angeles. It's a two-story, 24-hour diner and drive-in built around a Supercharger station, with a 1950s-meets-future design. Tesla says its 80 V4 Supercharger stalls make it the world's largest urban Supercharging station. The stalls are open to any EV that can use Tesla's NACS plug. Two outdoor LED 'megascreens', which Tesla describes as 66 ft, show movies and clips. Drivers can play the sound through their car or the Tesla Diner app, or watch from a rooftop deck. Tesla owners can order from their car's touchscreen. On opening day an Optimus humanoid robot handed out popcorn, and trade press reported it was operated remotely by a person. Tesla says solar canopies shade part of the charging lot. Elon Musk first floated the idea about seven years earlier and said that if it went well, Tesla would open diners in major cities around the world. The Reel's 'all-electric' label isn't how Tesla describes the restaurant itself; the claim checked here is that it's a charging hub with a diner attached.
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DID YOU KNOW? The Tesla Diner in Los Angeles is a retro-inspired, all-electric roadside restaurant and charging hub designed to combine dining, entertainment, and EV charging in one spot, offering a themed experience that blends nostalgia with Tesla's futuristic brand image. NOW YOU KNOW!
Felix Falls: Faster Than Sound, With No Engine
Felix Baumgartner was an Austrian skydiver and BASE jumper. On October 14, 2012, in the Red Bull Stratos project, he rode a pressurized capsule under a helium balloon from Roswell, New Mexico, and stepped off at 38,969.4 m (127,852 ft). Red Bull's final mission data say he went supersonic 34 seconds into the fall and reached 1,357.6 km/h (843.6 mph), Mach 1.25, at 50 seconds. He became the first person to break the speed of sound in freefall without a vehicle. He was in freefall for 4 minutes 20 seconds, and the whole descent from jump to landing took 9 minutes 18 seconds. The FAI, air sports' world governing body, ratified three world records from the jump: exit altitude, maximum vertical speed and freefall distance (36,402.6 m). It now lists the exit-altitude record as superseded, while the speed and freefall-distance records still stand. Baumgartner died on July 17, 2025, aged 56, when he lost control of a motorized paraglider over Porto Sant'Elpidio, Italy, and crashed at a resort. The investigating prosecutor later said the crash was caused by human error and found no technical fault with the equipment. This Reel was posted about four weeks after his death and doesn't mention it.
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DID YOU KNOW? In 2012, Austrian skydiver Felix Baumgartner made a record-breaking jump from the stratosphere, leaping from a helium balloon at about 39 km, or 24 mi. above Earth. Wearing a pressurized suit to survive near vacuum conditions and extreme temperatures, he reached free fall speeds of 1,357 kph, or 843 mph, breaking the sound barrier without mechanical propulsion. His descent lasted just over nine minutes with about four and a half minutes in free fall. NOW YOU KNOW!
Doom Plume: Ash That Climbs Into the Stratosphere
Volcanologists call these eruption columns or ash plumes. In an explosive eruption, gas-charged magma shatters into ash, tiny fragments of rock and volcanic glass less than 2 mm across, which shoots out with steam and gases. The jet first rises on its own momentum. It then keeps climbing because it is hotter and lighter than the surrounding air. Heights vary a lot. Iceland's Eyjafjallajökull plume in April-May 2010 mostly reached about 5-10 km, yet its fine ash drifting over Europe led to more than 100,000 cancelled flights. Mount Pinatubo's column in the Philippines on June 15, 1991, rose more than 35 km. The January 15, 2022, eruption of Hunga Tonga-Hunga Ha'apai reached about 57 km, into the mesosphere, the highest volcanic plume recorded in the satellite era. Ash is dangerous to aircraft because it can damage engines, instruments and windscreens, and it can stop jet engines. Health agencies such as the USGS and IVHHN list short-term effects including coughing, sore throats, eye irritation and worsening asthma or bronchitis. People with heart or lung conditions are most at risk. The footage shows a towering orange-lit ash cloud, but the Reel doesn't say which volcano.
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DID YOU KNOW? Volcanic debris plumes are enormous clouds composed of ash, rock fragments, and volcanic gases expelled violently during eruptions. Driven by explosive energy and heated gases, these plumes can soar tens of kilometers into the atmosphere, dispersing fine ash particles over vast areas. The debris within the plume can disrupt air travel, damage respiratory health, and impact ecosystems by coating land and water surfaces. NOW YOU KNOW!
Connected: 86 Billion Neurons, Trillions of Links
The '86 billion neurons' figure comes from a 2009 study by Frederico Azevedo, Suzana Herculano-Houzel and colleagues. They dissolved the brains of four adult men into a uniform 'soup' of cell nuclei and counted samples. They found about 86.1 billion neurons (give or take 8.1 billion), replacing the round 100 billion long quoted in textbooks. Most of those neurons aren't in the wrinkled cortex. About 69 billion are in the cerebellum, and about 16 billion are in the cerebral cortex. Neurons pass signals to each other at synapses. Synapse counts per neuron vary enormously by cell type, so '1,000 to 10,000 per neuron' is only a rough rule of thumb. Whole-brain totals are estimates too. A 2003 stereology study by Bente Pakkenberg and colleagues put the neocortex alone at about 0.15 quadrillion (150 trillion) synapses, which fits within the Reel's range of 100 to 1,000 trillion. No one has counted every synapse in a human brain, so the totals are estimates. The footage is golden, branching animation of neurons.
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DID YOU KNOW? The human brain contains approximately 86 billion neurons, each connecting to other neurons through synapses, with estimates ranging from 1,000 to 10,000 synapses per neuron. This results in roughly 100 to 1,000 trillion synaptic connections, forming an extraordinarily complex neural network. These connections enable the brain's vast processing power, supporting everything from basic reflexes to complex cognition. NOW YOU KNOW!
Cloud River: Some Rivers Flow Through the Sky
Atmospheric rivers are long, narrow corridors of concentrated water vapor in the lower atmosphere that carry moisture thousands of kilometers from the tropics toward higher latitudes. A strong one can move more water than the largest rivers on Earth, and when it meets mountains or cooler air the vapor condenses into heavy rain or snow. The footage, credited to daniel_asam, shows clouds flowing over a ridge.
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Did you know, high altitude atmospheric rivers, or cloud rivers, are long, narrow bands of concentrated moisture that flow through the sky, typically at altitudes of several kilometers. These airborne rivers can carry more water vapor than the Amazon River holds in liquid form, transporting it thousands of kilometers from tropical oceans toward higher latitudes. When they encounter mountain ranges or cooler air masses, the moisture condenses, producing intense rainfall or snow. NOW YOU KNOW!
The Shah: Mohammad Reza Pahlavi, Iran's Last Shah
Mohammad Reza Pahlavi was born in Tehran on Oct. 26, 1919. He became shah on Sept. 16, 1941, after British and Soviet forces occupied Iran and his father, Reza Shah, abdicated. In August 1953, during a power struggle with Prime Minister Mohammad Mosaddegh, he briefly fled the country and returned after a coup backed covertly by the United States and Britain. His White Revolution, ratified by referendum in 1963, redistributed land, set up literacy and health corps and extended voting rights to women. Iran's economy grew quickly, but by the 1970s inflation was high and there was little room for political participation. Opposition came from the clergy, secular nationalists and the left. He left Iran on Jan. 16, 1979; the Islamic Republic was declared on April 1, 1979; and he died in Cairo on July 27, 1980.
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DID YOU KNOW? Mohammad Reza Pahlavi, the last Shah of Iran, ruled from 1941 to 1979, ascending to the throne after his father, Reza Shah's abdication, during a British-Soviet invasion. His reign saw the White Revolution, a modernization program with land reforms, women's suffrage, and industrialization boosting Iran's economy but alienating traditionalists and clergy. NOW YOU KNOW!
Hail Storming: Ice That Grows in the Clouds
Hail forms inside thunderstorm updrafts. According to NOAA's National Severe Storms Laboratory (NSSL), raindrops are carried up into very cold air and freeze. The young hailstones then grow by colliding with supercooled water drops, liquid colder than freezing, which freeze onto them. A stone grows on a seed of ice, snow or dust. Water that freezes instantly traps air bubbles and makes cloudy ice, while water that freezes slowly makes clear ice. The alternating layers reflect the changing conditions a stone passes through, not just simple up-and-down trips. Hail falls when the updraft can no longer hold up its weight, and stronger updrafts can hold bigger stones. Hail 2 inches (5 cm) or larger usually comes from supercells, storms with a rotating updraft. The largest U.S. hailstone fell in Vivian, South Dakota, on July 23, 2010: 8.0 inches across and about 1.94 lb (0.88 kg). Small hail falls at roughly 9-25 mph, while stones over 4 inches can top 100 mph. 'Hail alley', where Nebraska, Colorado and Wyoming meet, averages seven to nine hail days a year. Insurers count hail as a major part of the tens of billions of dollars in U.S. severe-storm losses each year. The footage shows hail falling past a porch and windows.
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DID YOU KNOW? Hailstorms form when strong updrafts in thunderclouds carry water droplets high into freezing regions of the atmosphere, where they accumulate layers of ice before falling as solid balls of hail. Depending on their size, which can range from pea size to larger than baseballs, hail stones can inflict immense damage upon impact, sometimes causing billions in agricultural and property losses. NOW YOU KNOW!
Concrete Reefs: Reefs, Made of Concrete
Concrete is one of the most widely used artificial-reef materials, both as purpose-built reef modules and as recycled rubble such as old culverts, pipes and bridge pieces. In the U.S., the National Fishing Enhancement Act of 1984 led to a National Artificial Reef Plan, first adopted in 1985 and revised in 2007. It judges reef materials on function, compatibility with the environment, durability and stability. Concrete scores well on durability, but fisheries guidelines say it should be clean and well cured, because fresh concrete is strongly alkaline at first. Hollow cinder blocks, like those dumped from a barge in the footage, are generally considered a poor choice on their own. They are light and break easily, and storms can scatter or bury them. Once sunk, hard surfaces are colonized by algae, sponges, barnacles and, in warm waters, sometimes corals, and fish gather around them. A 2020 meta-analysis of 39 studies found that artificial reefs can support fish communities comparable to natural reefs, but results depend heavily on location and design. Scientists still debate how much artificial reefs produce new fish and how much they simply attract fish from elsewhere, which can make them easier to catch.
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DID YOU KNOW? Concrete blocks are commonly used as artificial reefs because they provide a durable, stable, and chemically inert structure that mimics the complexity of natural reef habitats. When placed on the seafloor, these blocks offer shelter and attachment surfaces for marine life like corals, sponges, and algae, which in turn attract fish and other organisms seeking food and protection. Over time, these artificial reefs enhance local biodiversity, restore damaged ecosystems, and support fisheries by creating new underwater habitats. NOW YOU KNOW!
Construction Covers: A Building Site Under a Bubble
In crowded Chinese cities, some building and excavation sites are now covered by huge air-supported domes, sometimes called 'soft pillows' or 'giant airbags'. Fans on the ground keep pumping air in, so the slightly higher pressure inside holds up a membrane, often PVDF-coated fabric, usually reinforced with steel cables. The main goal is to keep dust and noise from reaching the neighbors. Local officials say a nearly 9,000 m² dome over a renovation site in Guangzhou's Yuexiu District blocks up to 99% of dust. CGTN reported that it keeps construction noise below 60 decibels. A dome in Shenzhen stands 40 m tall over more than 12,000 m². Officials say such domes can be reused and taken down without leaving construction waste. A related design is used on contaminated land. In 2016, a soil-cleanup project at Beijing's former Shougang steelworks built what researchers called China's first negative-pressure membrane yard. There the air pressure is kept slightly lower inside, so fumes and dust can't leak out, and exhaust is filtered before release. The footage shows a white dome between towers and a Gothic-style church, but the Reel doesn't name the site.
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DID YOU KNOW? Chinese inflatable construction site covers are large, air-supported structures used to protect construction projects from weather and dust, while providing a controlled environment for workers. Made from durable weather resistant materials, these inflatable covers can be quickly deployed and moved, offering flexibility and cost savings compared to traditional scaffolding or hard enclosures. NOW YOU KNOW!
Guttation: Fungi That Sweat Droplets
Guttation, the release of liquid droplets, is common across the fungal kingdom. How much a fungus produces depends heavily on conditions such as the growth medium and temperature, and its biological role is only partly understood. Lab studies have found the droplets carry secondary metabolites and proteins. Penicillium expansum exudates held 20 specialized metabolites, including the mycotoxins patulin and citrinin, and 194 proteins. Droplets from ochratoxin-producing Penicillium strains held up to 11 times more ochratoxin A than the mycelium beneath them. Toxigenic Stachybotrys chartarum (black mold) produced droplets with up to several thousand nanograms of satratoxins per milliliter. Enzymes such as β-glucosidase, catalase and peroxidase have been measured in the exudates of plant-pathogenic fungi.
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DID YOU KNOW? Fungal guttation is the process where fungi excrete droplets of liquid from specialized structures or hyphal tips, often visible as tiny beads of moisture on the surface of fungal colonies. These droplets contain a mix of water, enzymes, secondary metabolites, and sometimes toxins, reflecting the fungus' metabolic activity. NOW YOU KNOW!
HoloFans: Pictures Painted in Midair
'Holographic fans' are rotating LED displays. Each blade, or 'ray', carries a strip of LEDs. As the rotor spins, a controller switches every LED on and off at exact angles, so each sweep paints the picture one slice at a time, and the eye blends the flashes into a steady image. In a dark room the blur of the blades nearly disappears, so the picture seems to float. Single fans use hundreds of LEDs rather than thousands. HYPERVSN's Solo M has four rays of 168 LEDs each (672 in all) spinning at about 670 rpm, and its newer SmartV Solo M lists 216 LEDs per ray and a 1080 x 1080 picture. Displays only reach thousands of LEDs when several fans are synced into a wall. Despite the name, these aren't holograms. Holography, which Dennis Gabor invented in 1947 and won the 1971 Nobel Prize in Physics for, records and rebuilds light waves using interference. A fan draws a flat image on the plane of its blades, and the 3D look comes from the artwork's shading. This Reel is Part I of a pair. HoloFans II (DD-700) explains the same mechanism, so this case focuses on hardware numbers and the holography history.
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DID YOU KNOW? Holographic fans use rapidly spinning LED blades to create the illusion of floating 3D images in midair by exploiting the persistence of vision, where the human eye perceives a continuous image from fast, sequential light patterns. As the fan blades spin, thousands of LEDs flash in precisely timed sequences, forming detailed visuals that appear to hover in space. NOW YOU KNOW!
Flying Fishermen III: Feet Built for Fish
The osprey (Pandion haliaetus) lives almost entirely on fish, which make up about 99% of its diet. Its outer toe can swing backward, so it can grip with two toes in front and two behind, an arrangement most hawks can't make. Barbed pads on the soles of its feet help hold slippery fish. When it spots a fish, an osprey often drops in stages, hovering in between, then plunges feet-first. Fish are usually caught within about half a meter of the surface. In a 1942 study in Nova Scotia, the final strike was usually judged to come from about 30 to 40 ft up. The bird then rises and shakes the water off. Success rates vary with place, weather and experience. The Cornell Lab of Ornithology says that across several studies ospreys caught fish on at least 1 dive in 4, and sometimes as many as 70%. A 2004 study at Magdalena Bay, Mexico, found 61% success, with an average of 2.4 dives per catch. Wind and choppy water lowered the odds. Once airborne, an osprey turns its fish to face forward, which cuts wind resistance.
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DID YOU KNOW? Ospreys are expert fish hunters, uniquely adapted for fishing with reversible outer toes, sharp spicules on their feet for gripping slippery prey, and dense plumage that resists water. Ospreys have specialized vision tuned to detect underwater movement, allowing them to spot fish from heights up to 100 ft. Their fishing success rate is among the highest of raptors, often catching a meal in just a few attempts. NOW YOU KNOW!
insularis blue: A Pit Viper in Turquoise
The white-lipped island pit viper, Trimeresurus insularis, is a venomous, tree-dwelling pit viper from the Lesser Sunda Islands of Indonesia and Timor-Leste. It is found on more than a dozen islands, from Bali, Lombok and Sumbawa to Flores, Komodo, Sumba, Timor and Wetar, and in eastern Java. It was first described in 1977 as a subspecies of the white-lipped pit viper, T. albolabris, and was raised to a full species in 2001. Most are green. A striking blue form occurs on Komodo and nearby Padar. Field reports describe yellow animals on Flores, and all forms share a red tail tip. The blue snakes are a color morph of the same species, not a separate subspecies. One field account says they lack yellow pigment, which leaves the scales blue. Like all pit vipers, it has a heat-sensing pit on each side of the head, between the eye and the nostril, that helps it find warm-blooded prey in the dark. The IUCN calls it a generalist that is probably the most often seen snake on the islands where it lives. It is also regularly involved in snakebites on Bali. Its color forms are popular in the pet trade and are bred in captivity.
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DID YOU KNOW? Blue insularis pit vipers, a striking subspecies of the white-lipped island pit viper, are known for their vivid turquoise or blue coloration and are native to a few isolated Indonesian islands like Komodo and Flores. These venomous snakes rely on heat-sensing pits near their nostrils to detect warm-blooded prey in low light conditions. striking with precision to inject hematotoxic venom that immobilizes and digests their target. They typically dwell in trees or shrubs and are ambush predators, blending beautifully with their surroundings. NOW YOU KNOW!
Ballistic Trident: Launched From Under the Sea
The Trident II D5 is a submarine-launched ballistic missile (SLBM) built by Lockheed Martin for the U.S. Navy. It has three solid-propellant stages and inertial guidance. It is 44 ft (13.41 m) long and weighs about 130,000 lb (58,500 kg). The Navy lists its range as 4,000 nautical miles (about 7,360 km), and other sources note that range depends on payload. It can carry several independently targetable reentry vehicles (MIRVs). The missile was first deployed in 1990. Expanding gas pushes it out of the launch tube, and the rocket motors fire once it breaks the surface. Under U.S. Navy listings, each Ohio-class submarine carries 20 D5 missiles and each British Vanguard-class submarine carries 16. The United Kingdom didn't co-develop the missile. It agreed in 1982 to buy Trident II under the Polaris Sales Agreement. According to the UK Parliament, Britain has title to 58 missiles, held in a shared pool with U.S. missiles at Kings Bay, Georgia, while the UK makes its own warheads. A life-extended version (D5LE) joined the fleet in 2017 and is set to arm the next U.S. Columbia-class and UK Dreadnought-class submarines.
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DID YOU KNOW The Trident II D5 is a submarine launch ballistic missile, or SLBM, developed by the US and the UK as a key part of their nuclear deterrent forces. It features three solid fuel stages, an operational range exceeding 7,400 km, and can carry multiple independently targetable reentry vehicles with nuclear warheads. NOW YOU KNOW!
Chip Change: Swapping a Chip by Hand
Replacing a chip on a circuit board is called rework, and the industry's guide to it is the IPC-7711/7721 standard. With a surface-mount chip, every joint has to melt at the same time, or the part can't come off cleanly. A hot-air rework station does this by blowing controlled hot air through a nozzle sized to the part. Many setups also warm the whole board from below with a preheater. Flux goes on first to help the solder flow. Once all the joints are molten, the chip is lifted with tweezers or a vacuum pickup. The bare pads are then cleaned with fresh flux and solder wick, braided copper that soaks up old solder. Too much heat or scrubbing can tear a pad off the board. The new part is lined up, tacked in place and reflowed, then checked for bridges (solder shorting two leads), cold joints and lifted pads. Many chips on modern motherboards are ball grid arrays (BGAs). They have no pins: rows of solder balls sit hidden underneath, so they are usually reworked with special equipment, and their joints can't be checked by eye.
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DID YOU KNOW? Chips on a motherboard can be replaced using soldering in a meticulous process that requires precision, proper tools, and a steady hand. It starts by identifying the faulty chip and carefully cleaning the area around it. Using a heat gun or rework station, controlled heat is applied to melt the solder holding the chip in place, allowing it to be gently removed with tweezers. The exposed pads are then cleaned using flux and a solder wick to remove old solder. Once the new chip is correctly aligned on the board, heat is reapplied to secure it, ensuring each pin is properly soldered without any accidental bridges or cold joints. NOW YOU KNOW!
Pipeline Blasting: Rock in the Way? Blast It
On pipeline projects, blasting is mostly used to break up bedrock so crews can dig the trench for new pipe. The footage shows that kind of blast: a line of charges lifting mud and rock along a slope. Crews try machines first, such as bulldozer-mounted rippers and rock hammers. Pipeline blasting plans filed with U.S. regulators call for explosives only where rock can't be dug economically any other way. The work is tightly controlled. A contractor has to write a site-specific blasting plan and follow state and local explosives rules. Typical plans call for surveys of buildings, wells and utilities within 150 ft before blasting, plus vibration and air-blast monitoring and blasting mats to hold down flying rock. They also require warning signals and inspections afterward. Charges are loaded into drilled holes and fired in sequence a few milliseconds apart, which keeps ground shaking down. FERC also requires a schedule of planned trenching or blasting for each waterbody wider than 10 ft. The Reel says blasting is used to remove old pipelines, but none of the sources I found support that as a normal method.
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DID YOU KNOW? Pipeline blasting is a controlled method used to clear, shape, or remove sections of pipeline infrastructure, typically involving the use of high-energy explosives or compressed gases. In construction or decommissioning, blasting may be employed to remove old or obstructed pipeline segments buried underground or submerged underwater, especially when mechanical removal is impractical. NOW YOU KNOW!
Tigers & Trees: Claw Marks as Calling Cards
Tigers (Panthera tigris) rear up against tree trunks and rake the bark with their front claws. Old accounts describe scratch marks more than 3 m (about 11 ft) up a trunk, and one soft-barked tree in an Indian zoo was scratched so often that it died. Scratching helps keep the claws in shape: observers watching a captive tigress found a shed outer layer of claw left in a scratch mark. The gouges are also thought to work as signals to other tigers. Tigers have scent glands between their toes, but tiger-pheromone researchers say little is known about what those secretions communicate. A tiger's best-documented scent mark is marking fluid sprayed onto trees and bushes. Studies of wild tigers in Nepal's Chitwan, along with captive work in India, suggest this spray carries information about territory and breeding. Tigers also leave scrapes on the ground and droppings as marks. Researchers think marking helps tigers keep track of one another and avoid unwanted encounters. The footage shows a tiger scratching a pine trunk in snow.
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DID YOU KNOW Tigers use trees as scratching posts not only to sharpen and maintain their claws, but also to communicate territorial dominance through scent and visual markings. As they rake their claws down the bark, they leave deep gouges that signal strength and presence to rival tigers, while specialized scent glands in their paws deposit unique chemical markers. This dual-purpose behavior helps establish territory boundaries, reduce physical confrontations, and maintain claw health for hunting. NOW YOU KNOW!
Cloud Chambers: Radiation, Made Visible
A cloud chamber makes the paths of electrically charged particles visible. Inside, the air holds more vapor than it normally could, so it is supersaturated and ready to condense. A fast charged particle knocks electrons off molecules along its path and leaves a line of ions behind it. Vapor condenses on those ions as tiny droplets, which form a thin trail. The trail doesn't glow: it shows up because a lamp lights it against a dark background, and it fades within moments. The Scottish physicist C.T.R. Wilson built the first cloud chamber at Cambridge's Cavendish Laboratory in 1911. His version used water vapor and made it supersaturated with a sudden expansion. He shared the 1927 Nobel Prize in Physics for the method. Many classroom chambers today are diffusion chambers, which keep alcohol vapor supersaturated over a very cold plate, so tracks form continuously. The shape of a track hints at the particle: alpha particles leave short, thick tracks and electrons leave thin, wandering ones. In a magnetic field, the tracks curve, which reveals charge and momentum. That is how Carl Anderson identified the positron, the first known antiparticle, in 1932.
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DID YOU KNOW? Cloud chambers track radiation by visualizing the paths of charged particles as they pass through a supersaturated vapor inside the chamber. When radiation, such as alpha or beta particles, travels through the chamber, it ionizes the vapor along its trajectory. The vapor condenses around these ions, forming tiny droplets that create visible, glowing tracks outlining the particle's path. By observing these trails scientists can determine the type, energy, and behavior of the radiation. NOW YOU KNOW!
Fresh Fiat: Money Gets Printed to Order
US paper money is made by the Bureau of Engraving and Printing, part of the Treasury Department, which has printed the nation's currency since 1862. All of it comes from two plants, in Washington, D.C., and Fort Worth, Texas. Coins are a separate job, made by the US Mint. The notes are Federal Reserve notes, and the Federal Reserve Board, as their issuing authority, sends the BEP an annual print order. The 2025 order, approved on July 16, 2024, called for 4.1 billion to 5.9 billion notes worth $83.2 billion to $113 billion. The Board says the main driver in recent years has been replacing unfit notes destroyed in normal processing, along with demand at home and abroad. The BEP reported finishing the 2025 order at 4.8 billion notes. The 2026 order ranges from 3.8 billion to 5.1 billion notes, and a redesigned $10, the first of the 'Catalyst' series, is due in 2026. The dollar is 'fiat' money because its value rests on law and trust rather than a promise to swap it for gold. The last link, letting foreign governments convert dollars to gold, ended on August 15, 1971, when President Nixon suspended convertibility. The footage shows a currency plant: sheets on presses, stacks of printed notes and bundles moving along conveyors.
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DID YOU KNOW? The creation of physical paper US dollars or fiat currency, is handled by the Bureau of Engraving & Printing, or BEP, an agency of the US Department of the Treasury. Each year, the BEP prints new Federal Reserve notes, based on orders from the Federal Reserve System, which determines how much cash is needed to replace worn out bills and meet changing demand in the economy. NOW YOU KNOW!
Raytheon: It Started With a Radio Tube
Raytheon is one of RTX Corporation's three business segments, alongside Collins Aerospace and Pratt & Whitney. The company began in 1922 in Cambridge, Massachusetts, as the American Appliance Company, founded by Laurence K. Marshall, Vannevar Bush and Charles G. Smith. Its first hit product was a gas-filled rectifier tube, named Raytheon ('light from the gods'), that let radios run on household current instead of batteries. The company took the tube's name and grew through radar and microwave work, including the first microwave ovens. In April 2020, Raytheon Company merged with United Technologies to form Raytheon Technologies, which renamed itself RTX in 2023. Today the Raytheon segment makes air and missile defense systems such as Patriot, the AN/SPY-6 family of naval radars, missiles and sensors. RTX reported Raytheon's 2024 net sales at $26.7 billion, with growth from Patriot, NASAMS and counter-drone programs. Raytheon's own site lists more than 52,000 employees, and in 2024 it sold its cybersecurity, intelligence and services business. RTX as a whole has a backlog of about $218 billion. The footage is corporate promotional video: control rooms, a missile launch, lab work and a Raytheon sign.
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DID YOU KNOW? Raytheon a core division of RTX Corporation is a leading aerospace and defense contractor specializing in advanced weaponry and sensor systems. Established in 1922, it develops technologies like the Patriot missile defense system and ANSPY-6 radar for naval ships. Raytheon's expertise spans missile guidance, radar, and electronic warfare with innovation supporting hypersonic weapons and cyber security. Employing around 70,000 people, it generates over $30 billion annually. NOW YOU KNOW!
Ardabil: A Shrine That Gave an Empire Its Name
Ardabil is the capital of Ardabil province in northwestern Iran, near the border with Azerbaijan, with about 588,000 people in the 2022 census. It lies on an open plain just east of Mount Sabalan, a 4,811-meter dormant stratovolcano. Wikipedia lists the city's elevation as about 1,350 meters, with an average altitude of 1,263 meters. Local historical research puts its origins 4,000 to 6,000 years back, and Muslim historians credit its founding as a city to the Sasanian king Peroz I in the fifth century. Ardabil's fame comes from Sheikh Safi al-Din Ardabili, a Sufi master who died in 1334. His followers, the Safaviyya order, stayed loyal to his family. In 1501 a descendant, Ismail I, seized power, united Iran and made Shi'a Islam the state religion; the Safavid dynasty took its name from Sheikh Safi. Ismail I is buried at the shrine too. The Safavids promoted the shrine as a pilgrimage site, and in the late 1530s Shah Tahmasp enlarged it and commissioned the famous pair of Ardabil carpets, one now at London's V&A and the other at the Los Angeles County Museum of Art. UNESCO inscribed the Sheikh Safi al-Din Khānegāh and Shrine Ensemble as a World Heritage Site in 2010. Its route to the shrine has seven segments, mirroring the seven stages of Sufi mysticism. The footage shows the shrine's tiled tower, facades and dome interiors.
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DID YOU KNOW? Ardabil is a historic city in northwest Iran, sitting on a high plateau at approximately 1,400 m elevation, at the eastern foothills of the dormant Mount Sabalan. Boasting roots that stretch back 4,000 to 6,000 years, it rose to prominence as the spiritual center of the Safavid dynasty, founded by Sheikh ṣafi al-Dīn in the 13th century, and later flourished under Shah Ismāʿīl I, with a richly endowed shrine complex now recognized as a UNESCO World Heritage site. NOW YOU KNOW!
The Glades: A River Made of Grass
The Everglades is a region of flooded grasslands in southern Florida. It forms the southern half of the Kissimmee–Okeechobee–Everglades watershed, which begins near Orlando with the Kissimmee River. That river drains into shallow Lake Okeechobee. In the wet season, water spilling south from the lake spreads into a sheet about 60 miles wide and over 100 miles long. It moves about half a mile a day across a limestone shelf toward Florida Bay, and can take months or years to get there. Marjory Stoneman Douglas called it a "river of grass" in her 1947 book. Wikipedia notes the phrase captures only part of the system. Its main feature is sawgrass marsh, broken up by deeper sloughs, tree islands, cypress domes, and mangroves and coastal prairie where it meets the sea. The National Park Service calls the American alligator (Alligator mississippiensis) a keystone species of the Everglades. In the winter dry season, alligators dig "alligator holes" that hold water when the surrounding marsh dries out, becoming refuges for fish, turtles and wading birds. About half of the original Everglades has been converted to farms and cities. Canals and levees were built from the late 1800s, including 1,400 miles under a 1948 federal flood-control project. Congress approved the Comprehensive Everglades Restoration Plan in 2000. Everglades National Park was dedicated by President Truman on December 6, 1947. The footage shows open sawgrass water under a blue sky, then close-ups of marsh plants, an alligator and cypress trunks.
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DID YOU KNOW? The Everglades aquatic ecosystem in southern Florida is a vast, slow-moving river of grass composed of interconnected wetlands, sloughs, marshes, and mangroves that support remarkable biodiversity. Its freshwater system begins with rainfall and overflow from Lake Okeechobee feeding a shallow sheet flow of water southward. This flow contains sawgrass marshes, cypress domes, alligator holes, and coastal estuaries. NOW YOU KNOW!
Casimir's Effect: Photons From Empty Space
In 1948 the Dutch physicist Hendrik Casimir predicted that two uncharged, parallel conducting plates in a vacuum would be pushed together. In quantum theory, the vacuum is not empty but full of fluctuating electromagnetic fields. The plates limit which field modes fit between them, so the pressure outside is greater than the pressure inside. The force is tiny and only matters at very small separations. Steven Lamoreaux measured it directly in 1997, at gaps of 0.6 to 6 micrometers, agreeing with theory to within about 5%. Engineers now consider it in the design of micromachines (MEMS). The dynamic version, which is what the Reel describes, was proposed by Gerald Moore in 1970. A mirror moving at a significant fraction of the speed of light could convert virtual photons into real, detectable ones. Moving a physical mirror that fast isn't practical. In 2011, Christopher Wilson and colleagues at Chalmers University of Technology in Sweden instead used a superconducting circuit, published in Nature. A SQUID (superconducting quantum interference device) changed the electrical length of a transmission line about 11 billion times a second, at an effective speed of a few percent of light speed. They detected microwave photons emitted in correlated pairs, the predicted signature, and called it the first observation of the dynamical Casimir effect. The footage shows two metal strips hanging side by side and drawing together. That's a visible-scale stand-in for illustration: real Casimir forces are only measurable at micrometer gaps.
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DID YOU KNOW? The dynamic Casimir effect is a quantum phenomenon where accelerating or moving mirrors, or boundaries in a vacuum can create real particles, such as photons, from the vacuum's fluctuating electromagnetic field. Unlike the static Casimir effect, which produces a force between stationary conducting plates due to vacuum fluctuations, the dynamic version involves changing boundary conditions rapidly enough that virtual particles become actual, detectable particles. NOW YOU KNOW!
Mercedes Stadium: A Roof That Opens Like a Camera
Mercedes-Benz Stadium in Atlanta opened on August 26, 2017, replacing the Georgia Dome as home of the NFL's Atlanta Falcons and MLS's Atlanta United FC. It is owned by the state of Georgia through the Georgia World Congress Center Authority and operated by the Falcons' parent company, AMB Group. Its construction cost was estimated at $1.6 billion in 2016. The architects, HOK, designed it from the top down. The roof has eight translucent ETFE "petals", each about 220 feet long. They appear to rotate like a camera aperture but actually slide in unison along 16 straight tracks, and HOK says they open in eight minutes and close in seven. Its circular opening was inspired by the oculus of Rome's Pantheon. The roof wasn't finished when the stadium opened. At a July 2018 demonstration, about 11 months after the first event, it opened in 8 minutes 10 seconds, according to the Atlanta Journal-Constitution. Below it hangs the Halo, a ring-shaped video board 58 feet tall and 1,100 feet around. The master plan set a regular capacity of 71,000, expandable to 75,000 for events such as the Super Bowl. On November 15, 2017, it became the first professional sports stadium to earn LEED Platinum certification, with 88 points. The stadium credits that to 4,000 solar panels producing about 1.6 million kWh a year, a 680,000-gallon rainwater cistern and a 2.1-million-gallon stormwater system. It hosted Super Bowl LIII in 2019. The footage looks up through the open roof from the field, then pans around the seating bowl and the Halo board.
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DID YOU KNOW? The Mercedes-Benz Stadium in Atlanta is a modern, multi-use arena that opened in 2017 as home to the NFL's Atlanta Falcons and MLS's Atlanta United FC, featuring an iconic retractable "camera shutter" roof that opens in under eight minutes and a massive 360° Halo video board encircling the roof opening. With a base capacity of around 71,000, which is expandable for major events, it boasts sustainable design elements like rainwater harvesting, solar panels, and LEED Platinum certification. NOW YOU KNOW!
Shape Memory: Bend It, Heat It, It's Back
Shape-memory alloys can be bent out of shape when cool and then spring back when warmed. The best known is nitinol, an alloy of roughly equal parts nickel and titanium. Its name comes from Nickel, Titanium and the Naval Ordnance Laboratory, where William J. Buehler's team discovered it in 1959. According to ASME, the team was looking for materials for tools to dismantle mines. Wikipedia recounts that, at a 1961 meeting, someone heated a folded strip of it with a pipe lighter and it snapped back to its original shape. The effect comes from a reversible change in crystal structure. Below its transformation temperature, nitinol is in a monoclinic martensite phase that deforms easily and holds its new shape. Heated above that temperature, it converts to a cubic austenite phase and returns to its original form. The remembered shape isn't automatic. ASME says the part must be shape-set by clamping it in a mold, heat-treating it at about 500 °C and cooling it quickly. Composition and heat treatment adjust the transformation temperature. Above that temperature, nitinol is also superelastic, recovering from strains of about 8%. The shape-memory effect was first seen in a gold–cadmium alloy in 1932 by the Swedish chemist Arne Ölander. Shape-memory polymers became commercially available in the late 1990s. Nitinol is now used in stents, orthodontic wires and eyeglass frames. The footage shows a bent wire and a coil over a red heating element, straightening and contracting as they warm.
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DID YOU KNOW? Heat-based shape memory refers to the property of certain materials, especially shape memory alloys and shape memory polymers to "remember" and return to a preset shape when heated. The science behind this relies on thermally induced phase transitions. For alloys like nitinol, or nickel titanium, heating triggers a change from the low-temperature martensitic phase where it's easily deformed, to the high-temperature austenitic phase, where it returns to its memorized shape. NOW YOU KNOW!
Macrophagia: Some of Your Cells Eat Bacteria Whole
Macrophages ('big eaters') are immune cells found in every tissue. They recognize microbes in two ways: directly, through receptors for microbial surface patterns, or indirectly, through receptors for antibodies and complement proteins that coat a microbe. The cell then wraps its membrane around the target and pinches it off into a phagosome. Over the next steps the phagosome fuses with endosomes and then lysosomes, becoming an acidic phagolysosome (pH as low as about 4.5) filled with digestive enzymes. NADPH oxidase pumps in superoxide, and nitric oxide from the enzyme iNOS can combine with it to form peroxynitrite. Élie Metchnikoff discovered the process in starfish larvae in 1882 and shared the 1908 Nobel Prize for it. Some pathogens, including the tuberculosis bacterium, survive by blocking the process.
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DID YOU KNOW? Macrophages detect bacteria through surface receptors that bind specific bacterial molecules, triggering engulfment via phagocytosis into vesicles called phagosomes. These phagosomes fuse with lysosomes, where enzymes and reactive oxygen and nitrogen species kill and digest the bacteria. NOW YOU KNOW!
Sensitive contentForeverest: Why Many Who Die on Everest Are Never Brought Down
More than 300 people have died in the Everest region in a century of climbing, and more than 200 bodies are thought to remain on the mountain. Above about 8,000 m, the so-called death zone, the air holds roughly a third of the oxygen at sea level, and summit temperatures average about -36 °C in January. Bringing someone down from there takes a large team, bottled oxygen and a short weather window, so many of the dead have stayed where they fell. Since 2019, Nepal-funded clean-up campaigns have started to bring some of them home: in 2024 a team of soldiers and Sherpa climbers recovered four bodies and a skeleton.
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DID YOU KNOW? The bodies of climbers who died on Mount Everest often remain there permanently because of the extreme conditions and the difficulty of retrieval. At elevations above 8,000 meters, the so called "Death Zone" the air is so thin that human survival is limited, and temperatures can plunge below -30 °C or -22 °F. When climbers perish here, recovery is dangerous, expensive, and sometimes impossible. NOW YOU KNOW!
On A Glide: No Engines, No Second Try
The Space Shuttle orbiter came home without engine power. NASA's Glenn Research Center explains that once the external tank was gone, the main engines had no propellant, so the shuttle returned as an unpowered glider. It had a low lift-to-drag ratio because it had to slow from about 17,300 mph to about 250 mph. About an hour before landing, a deorbit burn dropped it out of orbit. It entered the atmosphere nose-first at a 40° angle of attack to limit heating, and computers controlled its speed with a series of banking roll reversals. NASA's Kennedy Space Center fact sheet says commanders took manual control for the final approach during subsonic flight, usually about 22 miles (35 km) from touchdown. The initial approach glide slope was 20 degrees, more than six times steeper than an airliner's 3 degrees. Because the orbiter was unpowered, it had no go-around capability. It touched down at 213 to 226 mph. From 1991, orbiters were fitted with a 40-foot drag parachute, deployed as the nose came down, plus carbon brakes. Of 133 successful landings, 78 were at Kennedy's 15,000-foot Shuttle Landing Facility, 54 at Edwards Air Force Base in California and one, STS-3, at White Sands in New Mexico. The program flew 135 missions between April 12, 1981, and July 21, 2011, when Atlantis made the final landing. The footage shows an orbiter gliding over Florida wetlands, touching down and rolling out with its drag chute.
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DID YOU KNOW? Space shuttles landed by reentering Earth's atmosphere at precise angles to manage intense heat and deceleration. Once through the atmosphere, they transitioned into a steep, high-speed glide with astronauts manually controlling the descent and approach. Finally, the shuttle touched down on a long runway, usually at Kennedy Space Center or Edwards Air Force Base, using landing gear and brakes to safely stop. NOW YOU KNOW!
NVIDIA's Blue: A Droid Raised in Simulation
Blue is a small, Star Wars-inspired robot from Disney Research, part of the company's BDX droid family. It joined NVIDIA CEO Jensen Huang onstage during his GTC 2025 keynote in San Jose on March 18, 2025. TechRadar quotes Huang as saying, "Blue has two Nvidia computers inside." Disney Research's Moritz Bächer told TechRadar that each BDX droid has four actuators in the head and neck, five in each leg, and two NVIDIA Jetson computers. The droids learn to move in character through reinforcement learning in simulation. At the same keynote, NVIDIA announced Newton, an open-source physics engine for robotics built on its Warp GPU framework and OpenUSD. NVIDIA's announcement describes Newton as co-developed with Google DeepMind and Disney Research, and says Disney Research would be the first to use it for its robotic characters. Newton was not yet available at GTC. On September 29, 2025, the three organizations contributed it to the Linux Foundation, and it was released in beta under open governance. Disney had already shown BDX droids at GTC 2024. The Reel's footage shows the droid walking on a dark stage in front of a desert backdrop.
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DID YOU KNOW? At GTC 2025, Nvidia working with Disney Research and Google Deepmind, unveiled Blue, a pint-sized Star Wars-inspired entertainment robot driven by two onboard Nvidia computers. It uses Newton, Nvidia's new open-source physics engine built on their Warp GPU framework, to learn lifelike motions via reinforcement learning in simulation before operating in the real world. NOW YOU KNOW!
Sickled Cells: One Swapped Amino Acid, One Bent Cell
Sickle cell disease is a group of inherited red blood cell disorders caused by a mutation in the beta-globin gene, which helps make hemoglobin. According to the US National Heart, Lung, and Blood Institute (NHLBI), normal red blood cells are disc-shaped and flexible, so they move easily through large and small vessels. The mutation swaps a single amino acid, valine for glutamic acid, producing hemoglobin S. When hemoglobin S gives up its oxygen in the tissues, it links into long, rigid strands inside the cell. A 2019 review in the Annual Review of Pathology by Prithu Sundd and colleagues describes how these polymers stiffen and distort the cell. The sickled cells are inflexible and can stick to vessel walls, slowing or blocking blood flow. That starves nearby tissue of oxygen and can cause sudden episodes of severe pain, called pain crises. NHLBI also notes that sickle cells break apart early, lasting only 10 to 20 days compared with 90 to 120 for normal red cells. The body may not keep up, which leads to anemia. Other complications NHLBI lists include acute chest syndrome, stroke, eye problems and infections. The disease is autosomal recessive: a person must inherit the mutation from both parents. The FDA says it affects about 100,000 people in the US. Chicago physician James B. Herrick first described it in the medical literature in 1910. On December 8, 2023, the FDA approved the first cell-based gene therapies for it, Casgevy and Lyfgenia, for patients 12 and older. The footage is a medical animation of red cells flowing through a vessel, then sickled cells clumping.
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DID YOU KNOW? Normal red blood cells or RBCs, are flexible biconcave discs designed to efficiently carry oxygen from the lungs to tissues and return carbon dioxide for exhalation. Their shape and flexibility allow smooth passage through small blood vessels. In contrast, sickle cells are rigid and crescent-shaped due to abnormal hemoglobin that polymerizes under low oxygen, causing cells to deform. These sickled cells are less efficient at oxygen transport, prone to clumping and blocking blood flow, which leads to pain, tissue damage, and complications like anemia and organ injury. NOW YOU KNOW!
Supercell: A Thunderstorm That Spins
A supercell is a thunderstorm with a deep, persistent rotating updraft called a mesocyclone. The National Weather Service (NWS) office in Amarillo says supercells are the least common type of thunderstorm but are especially prone to severe weather, including damaging winds, very large hail and sometimes tornadoes. NOAA's JetStream adds that they cause nearly all significant US tornadoes and most hailstones larger than a golf ball, and that their updrafts can exceed 100 mph (160 km/h). The key ingredient is vertical wind shear, a change in wind speed and direction with height. NWS Amarillo calls moderate to strong shear between the surface and about 20,000 ft the most critical factor. Shear creates horizontal spin, and a strong updraft tilts it upright and stretches it into a rotating column. Shear also tilts the storm, keeping its updraft and downdraft apart so rain-cooled air doesn't choke it off. That's why a supercell can last for hours. Wikipedia gives a typical life of 2–4 hours, sometimes more than 7. Fewer than about 30% produce tornadoes. In a 2017 study, Johannes Dahl showed that simple tilting of the environment's horizontal spin doesn't fully explain the rotation near the ground. Supercells are often classified as classic, low-precipitation and high-precipitation. The footage shows a time-lapse of a towering storm cloud over farm fields.
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DID YOU KNOW? A supercell is a highly organized, powerful type of thunderstorm distinguished by its rotating updraft called a mesocyclone. Unlike ordinary thunderstorms, which typically have short-lived vertical updrafts, a supercell's persistent, rotating updraft can last for hours. This rotation is caused by wind shear, difference in wind speed and with height, which tilts and stretches horizontal spin into the storm's updraft. NOW YOU KNOW!
Karp: Alex Karp, Palantir's Co-Founder and CEO
Alex Karp studied at Haverford College and Stanford Law School, where he met Peter Thiel, and earned a doctorate from Goethe University Frankfurt. Palantir was founded in 2003, and Forbes dates Karp's start to 2004; he has been CEO since. Early funding included an investment from In-Q-Tel, the CIA's venture arm. Its clients include the U.S. Department of Defense, the FBI and foreign police agencies. Palantir went public through a direct listing on the New York Stock Exchange on Sept. 30, 2020. Fortune reported in February 2025 that Karp had sold about $1.88 billion of stock since the start of 2024 under preset trading plans. Forbes estimated his net worth at $19.9 billion on Oct. 17, 2026.
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DID YOU KNOW? Alex Karp is the co-founder and CEO of Palantir Technologies, a leading data analytics company serving government agencies like the FBI and CIA, as well as commercial clients. Since cofounding Palantir in 2003 and taking it public in 2020, he has grown the company into a major player in intelligence and defense data solutions. As of mid-2025, Karp's net worth exceeds $11 billion, largely from his substantial Palantir stake, and he has profited from significant stock sales amid the company's strong market performance. NOW YOU KNOW!
Self-Made Modular: Robots That Build With Modules
Self-reconfigurable modular robots are machines built from many units that can rearrange how they connect, to change shape for new tasks or to repair themselves. The idea of applying a common connector to a whole robot dates to Toshio Fukuda's CEBOT in the late 1980s. About 30 systems had been built by the time of the Wikipedia survey, but demonstrations have topped out around 50 units, and the promised robustness and low cost haven't been shown. The footage isn't one of those systems. It shows GITAI's Lunar Rover and three Inchworm robots with grapple ends building a 5-meter communications tower in a desert simulating the Moon. GITAI and KDDI announced the demo in December 2023 and March 2024. The robots then attached an antenna, connected power and took the tower apart again.
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DID YOU KNOW? Self-assembling solar-powered modular robots are advanced robotic systems composed of multiple identical or complementary units called modules, that can autonomously connect, disconnect, and rearrange themselves to adapt to tasks or environments. Each module harvests energy from sunlight, allowing for untethered, long duration operation in remote or extraterrestrial settings. These robots use algorithms for decentralized coordination, shape morphing and dynamic reconfiguration, enabling them to form different structures or tools. NOW YOU KNOW!
Golden Drop: Gravity as a Hunting Tool
The golden eagle (Aquila chrysaetos) is the most widely distributed eagle, found across the Northern Hemisphere. It mainly eats hares, rabbits, marmots and ground squirrels, and occasionally takes larger prey such as ungulates. Its best-documented dropping behavior involves tortoises. A 2022 study in Scientific Reports by José María Gil-Sánchez and colleagues describes golden eagles in southeastern Spain preying on spur-thighed tortoises (Testudo graeca) by dropping them onto rocks to break their shells. The tortoises served as alternative prey where rabbits had become scarce, and the eagles selected adult females. A 2022 study in Diversity by Lavrentis Sidiropoulos and colleagues found that tortoises made up an average of 71% of prey categories in golden eagles' breeding-season diet in northern Greece. Outside the breeding season, while tortoises hibernate, the eagles switched to carrion, mammals and birds. Golden eagles also drop sticks and rocks in courtship, catching them again in mid-air. The Reel's footage shows an eagle carrying a young ungulate, which then tumbles down rocky slopes. Dropping or knocking ungulates off cliffs is known mainly from filmed and anecdotal reports rather than systematic studies.
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DID YOU KNOW? Golden eagles are powerful raptors known for their dramatic hunting techniques, including dropping prey from great heights to kill or disable it. When hunting animals like tortoises, large rodents, or even young ungulates, they may seize the prey in their strong talons, fly high into the air and release it onto rocks or hard ground below. The impact can break shells, bones, or otherwise incapacitate the prey. NOW YOU KNOW!
Laser Ignition: Blue Light, Big Bang
Light can set off a gas mixture in several ways. A 2013 review in Optics Express by Geoff Dearden and Tom Shenton lists four mechanisms. In thermal initiation, the laser heats the gas or a surface. In non-resonant breakdown, a tightly focused pulse ionizes the gas into a tiny plasma spark. Resonant breakdown is a variant that relies on the gas absorbing specific wavelengths. In photochemical ignition, single photons split molecules, which usually requires ultraviolet light. Chlorine is a classic example of the photochemical route. Harvard's lecture-demonstration notes give the Cl–Cl bond energy as 243 kJ/mol, matching a photon of about 2.51 eV, or 492 nm. Photons at 405–450 nm carry about 2.8–3.1 eV, so they are energetic enough. Once a photon splits a chlorine molecule, a chain reaction (Cl + H₂ → HCl + H; H + Cl₂ → HCl + Cl) can turn explosive in a hydrogen–chlorine mixture. Energy alone isn't enough, though. Harvard's demo uses colored LEDs and only the UV one sets off the tube, and oxygen inhibits that chain. Engine laser ignition, reviewed by Dearden and Shenton and by Morsy (2012), works differently. Engine tests have typically used nanosecond pulses from near-infrared Nd:YAG lasers (1064 nm) focused into a plasma spark. They've been studied as a replacement for spark plugs in high-compression engines, and Wikipedia notes proposed uses in rocket engines. The footage shows a blue laser triggering a fireball and black soot in a flask, then liquids poured to make a yellow-green gas that appears to contain chlorine. A solid is added, and the laser fires again.
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DID YOU KNOW? Blue lasers with wavelengths around 405-450 nm, have photon energy sufficient to excite certain molecular bonds or even cause photo dissociation in reactive gases. If the mixture is flammable and conditions are right, such as sufficient concentration, oxygen presence, and absorption efficiency, the focused laser can heat the gas enough to start combustion. This principle is used in controlled laser ignition systems for precise, spark-free ignition in engines and research. NOW YOU KNOW!
Lunar Roving: Apollo's Electric Moon Buggy
The Lunar Roving Vehicle (LRV) was the electric car of the last three Apollo missions. According to NASA, it made its debut on July 31, 1971, when Apollo 15's David Scott and James Irwin drove it. Rovers were also driven on Apollo 16 (John Young and Charles Duke) and Apollo 17 (Gene Cernan and Harrison Schmitt), each used for three traverses, one per day. NASA's Space Science Data Coordinated Archive gives its mass as 210 kg and its design payload as 490 kg (Wikipedia gives 440 kg), so it could indeed carry more than twice its own mass. The frame folded so it could ride to the Moon in a bay of the Lunar Module. Each of its four wire-mesh wheels had its own 0.25-horsepower electric motor, powered by two 36-volt silver-zinc batteries that were not rechargeable. Boeing built the rovers, with Delco as a major subcontractor. The original $19 million contract ended up costing $38 million for four rovers, one of which was used for spare parts. Apollo 15's rover was driven 27.8 km, and Apollo 17's went 35.9 km, with a farthest distance of 7.6 km from the lander. The three rovers are still on the Moon. The footage is a view from the rover's TV camera, wrapped in gold-colored thermal insulation, looking across the lunar surface.
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DID YOU KNOW? In 1971 Apollo 15 mission, astronauts David Scott and James Irwin became the first humans to drive a lunar rover on the moon. The Lunar Roving Vehicle or LRV, was an electric battery-powered, four-wheeled buggy, designed to extend their exploration range. Weighing about 210 kg on Earth, it could carry over twice its own weight in astronauts, tools, and samples. NOW YOU KNOW!
Floatovoltaics: Solar Farms That Float
Floating solar, also called floating photovoltaics (FPV) or floatovoltaics, puts solar panels on pontoons or purpose-built floats on reservoirs, lakes, ponds and other calm water. According to the World Bank's 2019 market report, the first FPV system was built in 2007 in Aichi, Japan. The first commercial installation was a 175 kWp array on a winery's irrigation pond in Napa Valley, California, in 2008. The report says the platform is held in place by anchoring and mooring to the bank, to the bottom, to piles, or a combination. Besides saving land, the report lists possible benefits: reduced evaporation from reservoirs, better energy yield because water cools the panels and there's less dust, and the option of using existing power lines at hydropower dams. It also notes that the size of these performance gains has yet to be confirmed by larger installations across multiple regions and over time. Wikipedia reports installed capacity grew from about 3 GW in 2020 to 13 GW in 2022. It cites a World Bank estimate of 6,600 large bodies of water suitable for floating solar, with more than 4,000 GW of technical capacity if 10% of their surface were covered. Some footage shows panels on fixed posts over shallow water, a closely related approach that is included as illustration.
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DID YOU KNOW? Floating solar farms are arrays of photovoltaic panels mounted on floating structures that sit on bodies of water like reservoirs, lakes, or slow-moving rivers. Instead of using valuable land, these systems leverage unused water surfaces, reducing land competition with agriculture or urban development. The floating platforms support solar modules, inverters, and walkways, and are anchored to the bed or shore. NOW YOU KNOW!
Mount Kailash: A Summit No One Has Stood On
Mount Kailash is a 6,638 m (21,778 ft) peak in the Gangdise (Kailash) Range of the Transhimalaya, in Ngari Prefecture in western Tibet, China. It is sacred in four religions. Hindus regard it as the home of Shiva. Buddhist texts describe it as the mythological Mount Meru. According to Jain scriptures, Rishabhadeva, the first Tirthankara, attained liberation there. It is also sacred in Bon, Tibet's pre-Buddhist tradition. There is no recorded ascent. The Chinese government prohibits climbing it because of its religious significance. A Spanish expedition was refused permission in 2001, and the mountaineer Reinhold Messner turned down an offer from the Chinese government in the mid-1980s. Instead, pilgrims walk a circuit (kora or parikrama) around the mountain, about 52–53 km long and with its highest point at the Drölma pass, about 5,650 m. Hindus and Buddhists walk it clockwise and Bon followers counterclockwise. Sources disagree about Jains: Wikipedia says they walk clockwise, while Britannica says they go counterclockwise. The sources of four rivers lie nearby: the Indus, Sutlej, Brahmaputra and Ghaghara (Karnali). Britannica notes that pilgrimage access reopened in 1981, that Indian pilgrimages paused for about five years from 2020 and that they resumed in June 2025. The footage shows aerial views of the snow-capped peak.
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DID YOU KNOW? Mount Kailash is a pyramid-shaped peak in the Transhimalaya of Tibet, standing about 6,638 m or 21,778 ft high. Revered as one of the world's most sacred mountains, it holds spiritual significance for Hinduism, Buddhism, Jainism, and Bon. Climbing the mountain is forbidden out of respect for its sanctity, pilgrims instead perform a Kora, a 52 km circumambulation. NOW YOU KNOW!
The Iron Dome: Only the Rockets That Matter
Iron Dome is a mobile short-range air defense system built by Israel's Rafael Advanced Defense Systems with Israel Aerospace Industries. According to Wikipedia, it is designed to intercept rockets and artillery shells fired from about 4 to 70 km away. A battery has three parts. The EL/M-2084 radar, built by Elta, detects a launch and tracks its path. A battle-management center, built by mPrest, predicts where the rocket will land and fires only at those headed for populated or protected areas. Three or four launchers each hold 20 Tamir interceptors, which carry electro-optic sensors and steering fins. Rafael says the Tamir has a special warhead that detonates the target's warhead in the air. In a 2015 drone test, some targets were destroyed by the proximity warhead and others by a direct hit. Iron Dome was declared operational near Beersheba on March 27, 2011, and made its first interception on April 7, 2011. The United States contributed $1.6 billion from 2011 to 2021 and approved another $1 billion in 2022. Success rates are disputed. Rafael says more than 90%. Israeli military figures reviewed by Michael Armstrong (2018) were about 85% in 2012 and about 90% in 2014. Those rates count only rockets the system chose to engage. Critics, including MIT's Theodore Postol and Richard Lloyd, argued from video and damage analysis that far fewer warheads were destroyed. Armstrong reports that proponents dispute those methods. Rafael has also offered a naval version, C-Dome, unveiled in 2014.
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DID YOU KNOW? The Iron Dome developed by Israel's Rafael Advanced Defense Systems, is a mobile air defense system designed to intercept short-range rockets and artillery shells. Operational since 2011, it uses radar to detect incoming threats, tracking trajectories in real time. Tamir interceptors guided by electro-optical sensors, neutralize targets midair with a hit-to-kill approach, achieving a 90% success rate. NOW YOU KNOW!
Kailasa Temple: Carved From the Top Down
The Kailasa temple is Cave 16 of the Ellora Caves in Maharashtra, India, a UNESCO World Heritage Site since 1983. UNESCO calls it the largest monolithic temple of the 34 caves, which were cut into a basalt cliff between about AD 600 and 1000. The Archaeological Survey of India (ASI) calls it the largest single monolithic excavation and attributes it to the Rashtrakuta king Krishna I (c. 757–783), citing a copper-plate inscription of c. 812–813. The temple is dedicated to Shiva and named after Mount Kailash, which Hindu tradition holds to be Shiva's home. Rather than being built up from blocks, it was cut downward from the top of a sloping rock face into a free-standing shrine, with a gateway, a Nandi pavilion and a surrounding courtyard. Wikipedia, citing published estimates, puts the stone removed at about 85,000 m³, weighing about 200,000 tonnes, and the courtyard at about 82 by 46 m. Those figures are modern estimates, not records. The court elephants and an elephant-and-lion frieze around the base are among the parts the historian M. K. Dhavalikar attributes to Krishna I. Other parts, including the sculpture of Ravana shaking Mount Kailasa, appear to be later additions. The footage is aerial and close-up drone video of the temple and its carved walls.
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DID YOU KNOW? The Kailasa Temple at Ellora, India, is a marvel of ancient engineering carved from a single Basalt monolith in the 8th century. Dedicated to Lord Shiva, this rock-cut temple, part of the Ellora Caves, was excavated vertically from a hillside, removing over 200,000 tons of stone. Its intricate carvings including life-size elephants and a 100-foot tall central tower showcased Rastrakuta dynasty craftsmanship. NOW YOU KNOW!
Northrop Grumman: From Flying Wings to Webb's Sunshield
Northrop Grumman is a US aerospace and defense company based in Falls Church, Virginia. Its 2025 annual report (Form 10-K) says the company began in 1939 in Hawthorne, California, as Northrop Aircraft Incorporated, founded by Jack Northrop. Northrop Corporation was a principal developer of flying-wing designs, which, according to the company's heritage page, led to the B-2 stealth bomber. In 1994 it acquired the Grumman Corporation, which built the Apollo Lunar Module, and the combined company was renamed Northrop Grumman. The heritage page lists more than 20 companies it has since absorbed, including Westinghouse's defense electronics business (1996), Litton (2001), TRW (2002), Scaled Composites (2007) and Orbital ATK (2018). The 10-K reports 2025 sales of $41.954 billion, about 84% of them to the US government, and about 95,000 employees. It lists the B-21 Raider long-range strike bomber for the US Air Force and support for the B-2 Spirit among its key programs. For NASA's James Webb Space Telescope, launched on December 25, 2021, Northrop Grumman was the prime contractor. It designed and built the deployable sunshield, provided the spacecraft and integrated the whole observatory. NASA describes the sunshield as five layers of Kapton coated with reflective metal, each thinner than a human hair, about the size of a tennis court. The Reel uses company footage, including a hangar with aircraft, a holographic globe, an underwater drone, a cleanroom and a satellite.
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DID YOU KNOW? Northrop Grumman a global aerospace and defense leader, specializes in advanced technology systems. Founded in 1939, it designs cutting-edge platforms and autonomous systems for air, land, and sea. Its innovations include radar-evading materials and space technologies, such as the James Webb Space Telescope's sunshield. NOW YOU KNOW!
Mars Nights: Same Stars, Different Sky
NASA describes Mars's atmosphere as thin and made up mostly of carbon dioxide, with nitrogen and argon. Astronomy magazine puts it at about 1% of Earth's and notes that with so little air, the stars barely twinkle, and with no light pollution the nights are very dark. Dust is the catch. Rover observations show that even straight overhead, suspended dust dims stars by about one magnitude, and by up to four magnitudes near the horizon. When the sky is clear, NASA's Opportunity rover could just pick out magnitude 6 stars, about the limit of the human eye. Dust also makes Martian twilight last much longer. The constellations look the same as from Earth. BBC Sky at Night Magazine explains that Mars is so close to Earth, compared with the distance to the stars, that there's no visible parallax shift: Orion and Cassiopeia keep their shapes. What does change is the sky's pivot. Mars's axis points between Deneb in Cygnus and Alderamin in Cepheus, near only a faint star, so Mars has no bright North Star like Polaris. Earth appears as a bright morning or evening 'star', with the Moon beside it. On January 31, 2014, NASA's Curiosity rover photographed exactly that, about 80 minutes after sunset. Mars's two moons are visible too: Phobos rises in the west, crosses the sky in about four hours and visibly changes phase along the way, while Deimos looks like a very bright star. The footage shows a dense Milky Way-style star field above dark red ground, an artistic composite rather than a rover photograph.
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DID YOU KNOW? The night sky on Mars offers a striking view distinct from Earth's. Mars' thin atmosphere, primarily carbon dioxide, scatters light less, making stars appear sharper and more vibrant against a darker backdrop. Constellations familiar to Earth observers remain visible but shifted due to Mars' orbital position. Dust storms can dim the sky, but clear nights reveal a crisp, alien panorama. NOW YOU KNOW!
Alcubierre Drive: A Warp Drive That Works Only on Paper
In 1994, physicist Miguel Alcubierre showed that Einstein's general relativity allows a 'warp bubble': spacetime contracts ahead of a ship and expands behind it, so the ship can cover distance faster than light as seen from outside while never locally outrunning light inside its bubble. It is a mathematical solution, not a machine. The geometry requires exotic matter with negative energy density. Quantum physics allows only tiny, fleeting amounts of negative energy, and in 1997 Michael Pfenning and Lawrence Ford estimated that a 100-meter bubble would need far more negative energy than the mass-energy of the visible universe. Later papers have trimmed the estimates and found other problems, including how a crew could ever start or steer the bubble. No warp drive has been built or tested.
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DID YOU KNOW? The Alcubierre warp drive, proposed by physicist Miguel Alcubierre in 1994, is a theoretical solution to Einstein's field equations enabling faster-than-light travel. By contracting spacetime in front of a spacecraft and expanding it behind, the drive forms a warp bubble of flat spacetime. Inside this bubble, the spacecraft remains stationary, experiencing no acceleration, while the bubble moves at superluminal speeds. The mechanism requires exotic matter with negative energy density to manipulate spacetime curvature, a substance not yet observed in nature. NOW YOU KNOW!
Sheep Dipping: A Full-Body Bath Against Mites
Sheep scab is an intensely itchy skin disease caused by the mite Psoroptes ovis. The UK's National Animal Disease Information Service (NADIS) says the mites' droppings trigger an allergic reaction that leads to rubbing, wool loss, scabs and rapid weight loss. In severe cases it can kill. NADIS says compulsory treatment was enforced in Britain from 1928. Eradication failed and control was deregulated in 1992, but England and Wales still legally require infected flocks to be treated, and Scotland made the disease notifiable again in 2010. According to the UK sheep-parasite group SCOPS, there are now only two treatments for scab in the UK: plunge dips containing the organophosphate diazinon, and injectable macrocyclic lactones. Organophosphate dips work only as a proper plunge dip, never through jetters or showers. NADIS says dips kill scab mites within 24 hours, keep working for several weeks, and also control blowfly, lice, keds and ticks. Synthetic pyrethroid (cypermethrin) dips were once the other option. NFU Scotland reported in 2010 that the Veterinary Medicines Directorate suspended them in 2006 over water pollution and manufacturers then stopped making them. Organophosphates are highly toxic to people too. The UK Health and Safety Executive requires anyone buying OP dip to hold a certificate of competence and sets rules for protective clothing, storage and disposal. NFU Scotland notes that concerns have been raised about effects on human health. The footage shows sheep being pushed through a dip, with a metal tipping cradle and frame over the swim bath. The country isn't identified.
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DID YOU KNOW? Sheep dipping is a vital process to eliminate external parasites like ticks, lice and psoroptic mites causing sheep scab. Sheep are fully submerged in a concrete or metal plunge dip containing a diluted solution of insecticides, typically organophosphates or synthetic pyrethroids. These chemicals disrupt the parasite's nervous system, ensuring rapid kill-off and protection against reinfestation for weeks. NOW YOU KNOW!
Hypersonic Missiles: Mach 5 Isn't the New Part. Maneuvering Is
The Congressional Research Service defines hypersonic weapons as maneuvering weapons that fly at Mach 5 or faster, roughly a mile per second. They come in two types: glide vehicles boosted by a rocket, and cruise missiles powered by air-breathing scramjets. Ballistic missile warheads also exceed Mach 5. What sets hypersonic weapons apart is maneuvering and a lower, flatter flight path, which ground radars may not detect until late. CBO concluded they probably wouldn't be more survivable than ballistic missiles with maneuverable warheads unless those faced highly effective long-range defenses. Heat is the main engineering challenge: GAO says surfaces can exceed 2,000 °F, and CBO cites sustained temperatures as high as 3,000 °F. Russia reportedly fielded its first hypersonic weapons in December 2019, and China likely by 2020. The DOD's FY2026 request for hypersonic weapons was $3.9 billion, down from $6.9 billion in FY2025.
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DID YOU KNOW? Hypersonic missiles traveling beyond Mach 5, or roughly 6,100 kph, redefine modern warfare. These missiles, primarily boost glide vehicles or scramjet-powered cruise missiles, leverage aerodynamic lift to maneuver unpredictably within the atmosphere, evading traditional missile defenses. Their extreme speeds generate intense heat, up to 3,000 °F. NOW YOU KNOW!
Stellar Birth: Every Star Starts as a Cold Cloud That Collapses
Stars are born in giant molecular clouds: cold (about 10 to 20 K), dusty clouds made mostly of molecular hydrogen, up to about 300 light-years across, and holding enough gas for anywhere from 10 to 10 million suns. Something has to tip a dense region into collapse, such as a supernova shock wave. Gravity then squeezes a core by a factor of nearly 10^20 in density. The infalling gas heats up into a protostar whose core reaches several million kelvin. A protostar becomes a true star only when its core hits about 10 million K and hydrogen fusion starts. For a sun-like star, the process takes tens of millions of years.
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DID YOU KNOW? A star's birth begins in a stellar nursery, a dense molecular cloud of hydrogen, helium, and dust spanning light-years. Gravitational collapse triggered by shock waves from nearby supernovae or density fluctuations, compresses the cloud's core, raising temperatures to millions of degrees Kelvin. NOW YOU KNOW!
Octopus Robo-Grip: Grabbing Like an Octopus Arm
In February 2020, researchers from Beihang University, Harvard's Wyss Institute and Harvard SEAS, and the automation company Festo published a study in Soft Robotics on octopus arm-inspired tapered soft actuators with suckers. Zhexin Xie and August Domel were co-first authors, and Katia Bertoldi and Li Wen were co-senior authors. The team measured how much octopus arms taper and found that a cone-shaped silicone actuator bends into a wider range of curvatures than a cylindrical one. A steeper taper curls less tightly but pushes with more force. The researchers added suction cups modeled on those of the common octopus (Octopus vulgaris), shrinking from base to tip, and all linked to a single vacuum line. The arm runs on two valves: one pressurizes it to bend, and one applies vacuum to the suckers. Harvard's press release says it gripped thin plastic sheets, mugs, test tubes, eggs, smartphones, exercise balls and even live crabs, and could reach into narrow openings. Xie is also co-inventor of the Festo Tentacle Gripper, a commercial prototype of the idea. In 2023, a Beihang-led team with Li Wen and Cecilia Laschi reported a sensorized soft octopus arm (E-SOAM) in Science Robotics that bends and elongates to reach and grasp. The footage shows a robot arm whose multi-tentacle gripper curls around a ball, a box, a hat and a plant, a demonstration of the same tapered, suction-cup design.
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DID YOU KNOW? Animal-inspired robotics harness nature's designs, like the octopus-inspired robotic arm developed by Harvard and Beihang University researchers, mimicking the octopus' flexible tapered tentacles. This soft robotic arm uses a muscular hydrostat structure to bend, elongate, and grip. Equipped with vacuum-powered suction cups, it grasps diverse objects. NOW YOU KNOW!
Kawah Ijen: Blue Fire, Not Blue Lava
Kawah Ijen is the crater of the Ijen volcano in East Java, Indonesia. It holds a turquoise lake rich in sulfuric and hydrochloric acid. Its famous 'blue fire' (locally api biru) isn't lava. Photographer Olivier Grunewald, who documented it for years, told National Geographic and Smithsonian that the glow comes from burning sulfur-rich gases. These leave cracks at high pressure and temperatures up to 600 °C and ignite in air above about 360 °C, with flames up to about 5 m high. Some of the gas condenses into liquid sulfur that keeps burning as it runs downhill, which looks like flowing blue lava. The flames are faint, so they show only at night. USGS geologist John Pallister told National Geographic that miners sometimes light the sulfur themselves, which adds to the flames in night photos. Ijen is also a working sulfur mine. Ceramic pipes channel gas from a vent by the lake, and it condenses into molten sulfur that hardens yellow. Miners break off chunks and carry them out in baskets. Wikipedia, citing several reports, puts typical loads at 75 to 90 kg, carried up about 300 m to the crater rim and then about 3 km down, often twice a day. A 2024 study measured sulfur dioxide along the miners' path at 3.14 to 18.24 mg/m³, above the US EPA's 1.97 mg/m³ guideline. Miners reported eye irritation, coughing, headaches and shortness of breath. The footage shows bright blue flames and burning streams against the dark night slopes.
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DID YOU KNOW? Kawah Ijen volcano in East Java, Indonesia, is renowned for its striking blue lava, a rare geological phenomenon. This electric blue glow, visible only at night, is not true lava, but results from the combustion of sulphuric gases. These gases, released at high pressures and temperatures up to 600 °C, ignite upon contact with oxygen-rich air, producing vibrant blue flames. As the sulfur burns, some condenses into molten form, flowing down the volcano and creating the illusion of blue lava. NOW YOU KNOW!
Albatross Chicks: A Chick That Outweighs Its Parents
The grey-headed albatross (Thalassarche chrysostoma) is a mollymawk that breeds on islands in the Southern Ocean, with about half the world population on South Georgia. The IUCN lists it as Endangered. According to the Agreement on the Conservation of Albatrosses and Petrels (ACAP), it usually breeds every other year. Eggs are laid in October, incubation averages 72 to 74 days, chicks hatch mostly in December, and they fledge in late April or May at about 116 to 145 days old. The single egg goes in a large mud-and-grass nest, typically on steep slopes or cliffs with tussock grass. At Bird Island, South Georgia, a British Antarctic Survey team used electronic weighing platforms under the nests to log chick mass every 10 minutes, nearly a million weighings in all. They found grey-headed parents delivered meals averaging 616 g, and with both parents foraging the chick got a meal about every 1.26 days. The diet is mostly squid, with some fish and crustaceans. Like other albatross chicks, they reach a peak mass well above adult weight, about 30% or more according to a 2000 study in Ibis, then slim down before fledging. Wikipedia, citing Bird Island studies, gives a peak of about 4.9 kg; adults average about 3.65 kg. The footage shows a grey downy chick on a pedestal nest above the sea, then a whiter, fluffier chick in tall tussock grass, illustrating albatross chicks at different stages or sites.
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DID YOU KNOW? Grey-headed albatross chicks, found on sub-Antarctic islands, face a remarkable yet perilous early life. Hatched from a single egg after a 72 day incubation, these chicks are nurtured in cone shaped nests of mud and grass on steep cliffs. Parents feed them over 600 grams of squid and fish every 1.2 days, ballooning their weight to nearly 5 kilograms before fledging at 141 days. NOW YOU KNOW!
Blood Destruction II: Venom That Unmakes Blood
Many snake venoms, especially those of vipers (the family that includes rattlesnakes), are haemotoxic: they act on blood and blood vessels. A 2017 review in the British Journal of Haematology by Slagboom and colleagues describes three main routes. First, snake venom metalloproteinases (SVMPs) digest the basement membrane that supports capillary walls, especially type IV collagen. A 2016 review by Gutiérrez and colleagues explains that the weakened capillaries are then torn apart by the normal pressure of blood flow, so blood leaks into the tissue. Second, procoagulant toxins activate clotting factors such as Factor X and prothrombin, or act directly on fibrinogen. Inside the body this burns through the clotting factors, a condition called venom-induced consumption coagulopathy (VICC), and the blood ends up unable to clot. That's why a bite can cause both clotting and bleeding. Third, toxins such as disintegrins and C-type lectins can block platelets from clumping, or activate them until they're used up. Slagboom and colleagues cite about 1.8 million snake envenomings and up to 125,000 deaths a year. The same toxins are studied as drugs and diagnostic tools. The footage shows venom being collected from a snake held over a covered jar, then drawn into a syringe and added to blood in a glass, where the blood quickly thickens into a clot, a lab-glass illustration of the procoagulant effect. The snake isn't identified.
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DID YOU KNOW? Snake venom's impact on human blood is a striking biochemical process. Hemotoxic venoms, like those from rattlesnakes, disrupt blood clotting, causing uncontrolled bleeding or dangerous clots. The venom's enzymes break down vessel walls, leading to hemorrhage, while platelets fail to aggregate properly. NOW YOU KNOW!
Sclerotherapy: Closing Veins From the Inside
Sclerotherapy treats unwanted veins by injecting a solution (a sclerosant) that damages the vein's inner lining, the endothelium. The vein then becomes inflamed, scars and closes, and over weeks to months the body clears it and it fades. It's used for spider veins (telangiectasias), small reticular veins and some varicose veins. For larger varicose veins, the sclerosant is often whipped into a foam and injected under ultrasound guidance, a technique NICE has assessed in its guidance. The sclerosants in widest use are detergents such as polidocanol and sodium tetradecyl sulfate, which break down the cell membranes of the lining. Hypertonic saline, a concentrated salt solution, works by drawing water out of the cells. It's one option, but not the usual one, and ordinary saline wouldn't close a vein. Several sessions may be needed. Clinical sources list common effects such as pain at the injection site, bruising, temporary lumps, brown staining of the skin and new tiny red veins ('matting'). They list rare complications including skin ulcers, allergic reactions, and clots in deeper veins. This case is general information, not medical advice. The footage shows a needle injecting into small purple veins on a leg.
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DID YOU KNOW? Vascular sclerotherapy is a medical procedure used to treat varicose and spider veins. A sclerosing agent, typically a saline solution or chemical like polidocanol, is injected directly into the affected vein. This irritates the vein's inner lining, causing endothelial damage and inflammation. The vein collapses, forms scar tissue, and is gradually reabsorbed by the body. NOW YOU KNOW!
Neutron Spin: Dead Stars That Spin Hundreds of Times a Second
Neutron stars are the collapsed cores left after massive stars explode as supernovae, an idea Walter Baade and Fritz Zwicky proposed in 1933. As the core shrinks to about the size of a city, conservation of angular momentum makes it spin much faster, like a skater pulling in her arms. Pulsars are neutron stars whose beams of radiation, from near their magnetic poles, sweep past Earth like a lighthouse. Jocelyn Bell and Antony Hewish detected the first one in 1967. Most pulsars turn only a few times a second at most. The ones that spin hundreds of times a second are millisecond pulsars, old neutron stars 'recycled' by matter and angular momentum from a companion star. The record holder, PSR J1748-2446ad, spins 716 times a second.
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DID YOU KNOW? Formed from the collapse of massive stars, neutron stars spin at astonishing speeds, due to the conservation of angular momentum. Some neutron stars called pulsars spin hundreds of times per second, emitting precise beams of radiation. NOW YOU KNOW!
Chordodes Formosanus: Worms That Steer Mantises to Water
Chordodes formosanus is a horsehair worm (phylum Nematomorpha) first described in 2011 by Ming-Chung Chiu and colleagues from specimens taken from Hierodula mantises in Taiwan and Japan. Later surveys found it in other mantises and in long-horned grasshoppers too. Horsehair worms live as adults in water. Females lay strings of eggs there, and the larvae infect aquatic insect larvae and form cysts inside them. When those insects grow up and fly to land, a mantis or cricket that eats one picks up the cyst. The worm then grows inside the host's body cavity until it fills much of the abdomen. When it's mature, the infected host heads for water, and the worm emerges and swims off to mate. Researchers have long linked this water-seeking behavior to the parasite, but exactly how it works is still being studied. A 2023 Current Biology study of the related species Chordodes fukuii found more than 1,400 worm genes that closely match mantis genes, evidence of horizontal gene transfer. Many of those genes became more active during manipulation, which suggests they may help the worm influence its host. Adult horsehair worms of different species range from a few centimeters to over 2 m long, though most are 20 to 40 cm. The specimens measured in the 2011 description of C. formosanus were about 7 to 28 cm. The footage shows a green mantis held over and then in a glass of water as a long dark worm emerges from its abdomen.
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DID YOU KNOW? Submerging a praying mantis in water can reveal a grim parasitic phenomenon. Horsehair worms, specifically Chordodes formosanus, infect the mantis by growing inside its abdomen after the mantis consumes an infected insect. These worms, reaching up to 90 cm, manipulate the mantis' nervous system, compelling it to seek water. When submerged, the mature worm secretes proteins to exit the host, wriggling out as a long, threadlike form. NOW YOU KNOW!
heat.: Rocket Exhaust Can Top 3,000 Degrees Celsius
Rocket engines produce intense heat by burning propellants such as liquid hydrogen and liquid oxygen. The Reel says liquid-fueled engines like the Space Shuttle's produce exhaust above 3,000 degrees Celsius, hot enough to melt steel, and release energy at up to 10 gigawatts; I left the power figure attributed to the Reel. Launch pads use flame trenches to divert exhaust and water deluge systems to absorb heat and sound. The footage, credited to astronomy4u, shows a rocket launch.
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Did you know? Rocket take-offs produce intense heat from chemical combustion in their engines. Liquid-fueled rockets like the Space Shuttle generate exhaust temperatures exceeding 3,000 degrees Celsius, hot enough to melt steel. The heat results from burning propellants, such as liquid hydrogen and oxygen, releasing energy at rates up to 10 gigawatts. This extreme thermal output requires flame trenches and water deluge systems to absorb and dissipate heat. NOW YOU KNOW!
Deluge Days: Rocket Tests Run on Rivers of Water
NASA's Stennis Space Center in Mississippi tests rocket engines and stages by bolting them to giant stands and firing them in place. Because the hardware doesn't move, the exhaust, which NASA says can reach 6,000 degrees Fahrenheit (about 3,300 degrees Celsius), pours into the same flame deflector for the whole test. Water keeps it from melting. Stennis's high-pressure industrial water system draws on a 66-million-gallon reservoir. For the Space Launch System core stage's Green Run tests in 2020 and 2021, the B-2 stand could receive 335,000 gallons a minute at 300 psi, enough to fill an Olympic pool in about two minutes. Most of it cooled the exhaust through the deflector, and about 87,000 to 92,000 gallons a minute formed a curtain of water to damp noise and vibration. A typical 500-second RS-25 engine test uses about 5 million gallons. Launch pads use water too. At Kennedy Space Center's Pad 39B, the ignition overpressure and sound suppression system dumps about 400,000 gallons in under 30 seconds, peaking around 1.1 million gallons a minute. NASA says SLS produces about 176 decibels at liftoff. The footage looks like a pad water-flow test, with columns of water erupting in front of a steel launch structure.
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DID YOU KNOW? NASA pumps vast amounts of water during rocket tests to protect equipment and ensure safety. At facilities like the Stennis Space Center, rocket engines generate extreme heat and acoustic energy, exceeding 300 decibels. A high volume water deluge system sprays millions of gallons per minute to cool exhaust plumes, reducing temperatures from thousands of degrees Celsius to prevent damage to the test stand. NOW YOU KNOW!
Smart Plastics: A Plastic That Blue Light Makes Hard or Soft
In October 2022, chemists Adrian Rylski and Zachariah Page at the University of Texas at Austin reported in Science a way to make one polymer that is hard in some places and soft in others. They start with a liquid industrial monomer, cis-cyclooctene, and add two ruthenium catalysts. Where blue LED light shines, one catalyst switches on and builds trans-polyoctenamer, a stiff, opaque, semicrystalline plastic. In the dark, the other slowly builds cis-polyoctenamer, a soft, stretchy rubber. Because both regions are the same material, the boundary between them is seamless. The light sets the pattern while the plastic forms; it doesn't switch a finished part back and forth.
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DID YOU KNOW? Smart plastics represent a breakthrough in material science, transitioning from soft to hard under visible light. Developed by chemists at the University of Texas at Austin, these plastics start as monomers, small molecules that form polymers similar to common plastics. When exposed to blue LED light and a catalyst, illuminated areas crystallize into a rigid, semicrystalline structure 10x tougher than natural rubber. NOW YOU KNOW!
Imploder: Air Spaces Are the Body's Weak Point
The human body is mostly water, and water barely compresses. Divers survive great depths because the pressure on them rises gradually and evenly. The weak points are air-filled spaces such as the lungs, middle ears, sinuses and bowel, where gas can be squeezed or forced to expand, a kind of injury called barotrauma. Explosions cause harm in a related way. Blast injury medicine classes the pressure wave itself as primary blast injury, and gas-filled organs, especially the lungs, ears and gut, are the most vulnerable. Underwater, a blast wave travels farther and faster than in air, so it is more dangerous at a given distance. Deep-sea pressure is immense: it rises by about one atmosphere for every 10 meters of seawater, so at the roughly 3,800-meter depth of the Titanic wreck it is about 380 atmospheres, or around 5,500 psi. If a pressure hull fails at that depth, the surrounding water rushes in within milliseconds. That happened to the submersible Titan on June 18, 2023, killing all five people aboard. The US Coast Guard's Marine Board of Investigation reported on August 5, 2025, that the disaster was preventable and blamed mainly OceanGate's design, testing and safety practices. The footage is a stylized CGI figure made of red beads breaking apart, not real injury footage.
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DID YOU KNOW? Implosive forces exert catastrophic effects on the human body due to extreme pressure differentials. When subjected to rapid compression, such as in an underwater explosion or deep sea implosion, the body experiences forces exceeding thousands of pounds per square inch. This collapses air- filled cavities, notably the lungs, causing severe barotrauma. Organs rupture, blood vessels fail, and tissue damage occurs near instantaneously. NOW YOU KNOW!
Duga: A Radar the Whole World Could Hear
Duga, Russian for 'arc', was a Soviet over-the-horizon radar system that formed part of the USSR's early-warning network against ballistic missiles. Over-the-horizon radar bounces shortwave signals off the ionosphere to see far beyond the line of sight. After an experimental Duga near Mykolaiv proved the idea, two operational systems were built: Duga-1 in what is now northern Ukraine, then the Ukrainian SSR, and Duga-2 in eastern Siberia near Komsomolsk-on-Amur. Duga-1 split its transmitter and receiver about 60 kilometers apart. The giant receiving array stands in the closed town of Chernobyl-2, a few kilometers from the Chernobyl nuclear plant, and the transmitters were near Liubech. From July 1976 to December 1989, its pulses, at up to about 10 megawatts, swept across the shortwave bands as a sharp tapping, usually 10 times a second. Listeners worldwide called it the 'Russian Woodpecker', and it disrupted broadcasts, amateur radio and aviation communications, drawing thousands of complaints. NATO reportedly gave it the reporting name STEEL WORK or STEEL YARD. The Chernobyl antenna is about 700 meters long and 150 meters high. The signals faded in the late 1980s and stopped in 1989; the reasons were never made public. The abandoned array, inside the Chernobyl Exclusion Zone, is now a listed monument in Ukraine. The footage shows its rusting steel towers and antenna elements.
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DID YOU KNOW? The Russian "Woodpecker" was a powerful Soviet over-the- horizon radar system officially called Duga, located near Chernobyl, in Ukraine. Operating between 1976 and 1989, it emitted a rapid tapping noise that disrupted global shortwave radio, earning its nickname. Designed to detect incoming ICBMs by bouncing radio waves off the ionosphere, the Duga array was enormous, around 700 m long and 150 m high. NOW YOU KNOW!
Sandy Scaridae: Some White Beaches Are Fish Poop
Parrotfish are the family Scaridae, about 90 species of reef fish named for their fused, beak-like teeth. They bite and scrape the surfaces of dead coral and rock, mainly for the algae and other microscopic organisms growing on and in them, and swallow chunks of the calcium-carbonate reef along the way. A second set of tooth plates in the throat, the pharyngeal mill, grinds that material down, the digestible part is absorbed, and the rest comes out as fine white sand. NOAA says parrotfish can produce hundreds of pounds of sand a year, and a large bumphead parrotfish may produce several hundred pounds. The University of Hawaii's Exploring Our Fluid Earth estimates that up to 70% of the sand on white beaches in the Caribbean and Hawaii was excreted by parrotfish. A 2021 study on a Maldivian reef put individual production anywhere from under 3 to over 5,000 kilograms a year, depending on species and size. Grazing also keeps algae from overgrowing reefs, which is why parrotfish are seen as important to reef health. The footage shows a blue-and-purple parrotfish grazing over rocky reef.
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DID YOU KNOW? Parrotfish are brightly colored reef dwellers known for their beak-like teeth, which they use to scrape algae off coral and rocks. These teeth are fused into strong dental plates that allows them to grind coral, extracting nutrients and inadvertently producing fine white sand. A single parrotfish can create hundreds of pounds of sand each year. They play a crucial ecological role by controlling algae growth and helping maintain healthy coral reefs. NOW YOU KNOW!
The Motherland Calls: Built to Stand Taller Than Lady Liberty
The Motherland Calls is a reinforced-concrete war memorial on Mamayev Kurgan, a hill in Volgograd (formerly Stalingrad), Russia. It is the centerpiece of a memorial complex to the Battle of Stalingrad, fought between the Soviet Union and Nazi Germany from July 1942 to February 1943 and won by the Soviets at enormous cost. Sculptor Yevgeny Vuchetich designed it with architect Yakov Belopolsky, and structural engineer Nikolai Nikitin led construction, which began in 1963. The statue shows a female personification of the homeland striding forward with a sword raised in her right hand and her left arm outstretched, a design inspired by the ancient Greek Winged Victory of Samothrace. The figure itself is 52 meters tall; with its pedestal and sword it reaches 85 meters (279 feet). Wikipedia, citing historian Scott Palmer, reports that Nikita Khrushchev wanted it taller than the Statue of Liberty. The sword caused trouble: the original stainless-steel blade swayed in the wind and was replaced in 1972 with a slotted steel version. The complex was dedicated on October 15, 1967, timed for the 50th anniversary of the October Revolution. It was the world's tallest statue until 1989, and Wikipedia describes it as still the tallest statue in Europe when the pedestal is counted. A major restoration was finished in 2020, and the complex has been on UNESCO's tentative list since 2014. The footage shows the statue on its hilltop above the city and the Volga.
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DID YOU KNOW? The colossal statue known as the Motherland Calls, stands prominently atop Mamayev Kurgan in Volgograd, Russia. Completed in 1967, this monument commemorates the Soviet victory in the battle of Stalingrad during WWII. Designed by sculptor Yevgeny Vuchetich and engineer Nikolai Nikitin, the statue portrays a woman stepping forward with a raised sword, symbolizing the motherland calling her children to defend the nation. Standing at a total height of 85 m, or 279 ft, from the base to the tip of the sword, it was the tallest statue in the world at the time of its unveiling, and remains the tallest in Europe. NOW YOU KNOW!
Microwave Metal: Lightning in a Microwave
A microwave oven's magnetron fills the metal cooking cavity with microwaves at about 2,450 MHz, with a wavelength of about 12 centimeters. Food absorbs them, mostly through its water, fats and sugars. Metal reflects them instead, and a conductor in the cavity acts like an antenna: the oscillating field induces currents and voltages in it. The field is strongest at sharp points, edges, corners and narrow gaps. There it can become strong enough to ionize the surrounding air, which then conducts and glows as a spark or arc, jumping to the oven wall or to another piece of metal. MIT materials scientist Caroline Ross compares it to lightning. That's why a pile of nails or screws, crumpled foil, metal twist ties or gold-trimmed china spark so readily. Smooth, rounded metal is less prone to arcing but not risk-free. The USDA says small amounts of new, smooth foil can be used to shield food, if the manufacturer's manual allows it, the foil is shaped smoothly to the food, and it stays at least an inch from the oven walls. It also says to remove it at once if arcing starts. Arcing can damage the oven and start a fire. The footage shows a heap of nails inside a microwave, sparking and glowing as the plate turns.
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DID YOU KNOW? Microwaves cause electric fields to concentrate at sharp edges or points on pieces of metal, leading to a build-up of electrical charge. When the charge becomes strong enough, it ionizes the surrounding air, creating a conductive plasma channel, what we see as sparks or arcing. Smooth metal surfaces like a spoon might reflect microwaves harmlessly, but crumpled foil or utensils with sharp edges drastically amplify local electric fields. NOW YOU KNOW!
Crystal Jellies: A Nearly Invisible Jelly Whose Glow Lit up Biology
Aequorea victoria, the crystal jelly, is a hydrozoan (a hydromedusa), not a true jellyfish. It lives from the Bering Sea to Baja California. In light-producing organs around its bell margin, the protein aequorin gives off blue light when it binds calcium, and GFP converts that light to green. Osamu Shimomura isolated both proteins in 1962. GFP later became a key tool in biology and was the subject of the 2008 Nobel Prize in Chemistry.
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DID YOU KNOW? The crystal jellyfish, also known as Aequorea Victoria, is a nearly transparent, delicate jellyfish native to the Pacific Ocean, especially abundant along the western coast of North America. Its bell can reach up to 10 cm in diameter, and is rimmed with hundreds of slender tentacles. What makes it famous is its bioluminescence. When disturbed, it emits a ghostly glow, a phenomenon that is the result of the proteins aequorin and green fluorescent protein, or GFP. NOW YOU KNOW!
Central Limits: Random Bounces, One Bell Curve
The Galton board, also called the quincunx or bean machine, has interleaved rows of pegs above a row of bins. Each bead that falls through bounces left or right at each peg. The number of paths to each bin follows Pascal's triangle, so the bead counts follow a binomial distribution. With many rows and many beads, that binomial distribution approaches the normal distribution, the bell curve. That's a special case of the central limit theorem known as the de Moivre–Laplace theorem. Francis Galton designed the board for a Royal Institution discourse on February 27, 1874. He described a two-stage version in an 1877 letter to George Darwin and celebrated the 'Law of Frequency of Error' in his 1889 book Natural Inheritance. He used it to illustrate his ideas about heredity and regression toward the mean ('reversion to mediocrity'), ideas that were part of his eugenics. The bell shape isn't automatic. A tilted board or biased pegs shift and skew it, and other peg shapes give other distributions: Jacobus Kapteyn built a board that produces a log-normal curve. Large Galton boards designed by Charles and Ray Eames appeared in the IBM Pavilion at the 1964–65 New York World's Fair. The footage shows a modern desktop Galton board with a printed bell curve, its beads settling into the shape.
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DID YOU KNOW? Galton's Board is a device invented by Sir Francis Galton to visually demonstrate the central limit theorem, and the emergence of the normal distribution. It consists of a vertical board with rows of evenly spaced pegs; as balls are dropped from the top, they bounce randomly left or right as they hit each peg. After passing through multiple rows, the balls accumulate in bins at the bottom, forming a bell- shaped curve, regardless of the underlying random process at each peg. NOW YOU KNOW!
Avian Siblicide: Some Chicks Kill Their Own Siblings
Siblicide is the killing of a young animal by its siblings, and it is best known in birds. Biologists split it into two kinds. In obligate siblicide, one chick almost always kills the other, whatever the food supply. Masked boobies (Sula dactylatra) and Nazca boobies (Sula granti) are classic examples: the first-hatched A-chick starts pecking its sibling as soon as it hatches and usually kills it or pushes it out of the nest scrape within two days. In facultative siblicide, siblings fight but killing depends on conditions. Blue-footed booby (Sula nebouxii) chicks, for instance, usually kill a sibling only when food is short. More bird species are facultatively siblicidal than obligately so. Hatching asynchrony sets up the contest: the eggs are laid days apart, so the older chick gets a head start in size and strength. Cattle egrets (Bubulcus ibis) add higher hormone levels in the first eggs. A leading explanation for why parents lay a second egg at all is the insurance egg hypothesis, proposed by Dorward in 1962: the extra egg is a backup in case the first fails. Parents' behavior matters too: in a cross-fostering study, masked booby chicks raised by blue-footed booby parents committed siblicide less often. The footage shows a naked hatchling heaving a nestmate up and over the rim of a small nest.
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DID YOU KNOW? Baby birds pushing weaker siblings out of nests is a behavior known as siblicide, commonly seen in species like eagles, herons, and some seabirds. In these cases, the first hatched chick, often stronger and more developed, will aggressively peck at or physically eject younger, weaker nestmates. This brutal strategy ensures that limited parental resources like food, are concentrated on the chick most likely to survive. NOW YOU KNOW!
Pulse Jar: A Jar With a Small Hole Can Mimic a Pulse Jet Engine
A pulse jet engine burns a fuel-air mixture in rapid, repeated pulses. Jar versions improvise the idea: a small opening lets air in, a flammable vapor such as alcohol is added, and ignition makes the burning gas build pressure and rush out of the opening, often pulsing. The Reel itself calls this a highly dangerous experiment. The footage, credited to eurekahnb, shows a burning jar demonstration.
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Did you know, creating pulse jets in jars is a highly dangerous and improvised experiment that attempts to replicate the basic principles of a pulse jet engine in a confined space. A pulse jet operates by combusting a fuel air mixture in rapid pulses. In a jar setup, a small hole is typically made for air flow, and a flammable vapor like alcohol or gas is introduced inside. When ignited, the rapid combustion causes pressure to build up and expel hot gases out of the jar. NOW YOU KNOW!
Trocar Cows: A Cow, a Tube and a Flame
Bloat, or ruminal tympany, is overdistension of the rumen and reticulum with the gases of fermentation. The Merck Veterinary Manual describes two forms. In frothy (primary) bloat, gas is trapped in a stable foam mixed with the rumen contents, often on legume pasture, and the usual treatment is an antifoaming agent given by tube. In free-gas (secondary) bloat, gas collects above the contents because something, such as an esophageal obstruction, stops the cow from belching it up. Free-gas bloat is quickly relieved by passing a stomach tube or by inserting a trocar and cannula through the left flank into the rumen. A standard trocar is often too narrow to let stable foam escape, and a life-threatening case may need an emergency rumenotomy. The gas itself is mostly carbon dioxide: a 1974 review gives 45 to 70% CO2 and 20 to 30% methane, and a 1997 study of grazing dairy cows measured about 65 to 76% CO2 and 22 to 31% methane. The methane is why the escaping gas can be lit. The footage shows a cannula in a cow's flank with the gas burning as a blue flame. Lighting it is a demonstration, not part of the treatment.
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DID YOU KNOW? Draining flammable gas from the bowels of cows is an emergency veterinary procedure used to relieve life-threatening pressure caused by ruminal tympany, or bloat. In ruminant animals like cows, fermentation of ingested feed in the rumen produces large amounts of gases, primarily methane and carbon dioxide. Under normal conditions, cows expel these gases by burping, or eructation, but blockages or diet imbalances can trap gas, causing the rumen to expand dangerously. NOW YOU KNOW!
Danakil Depression: One of the Hottest, Driest and Lowest Places on Earth
The Danakil Depression in Ethiopia's Afar region lies mostly about 100 m below sea level, reaching around 124 m. It has a mean annual temperature of about 35 °C. The colorful terrain in the Reel's footage is the Dallol hydrothermal field. There, hot, hyperacidic, iron-rich brines rise through a thick salt deposit, and the iron oxidizes into yellow, green and orange crusts.
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DID YOU KNOW? The Danakil Depression in Ethiopia is one of the hottest, driest, and lowest places on Earth, famous for its otherworldly landscape of acidic hot springs, salt flats, lava lakes, and colorful mineral deposits. Despite its extreme conditions, some stunning natural phenomena occur there, including salt formations that sometimes appear in shades of blue or green, due to mineral-rich brines. NOW YOU KNOW!
Flying Bike: A Helicopter You Flew Standing Up
From the footage, I identify the machine as the de Lackner HZ-1 Aerocycle, a one-man 'personal helicopter' built for the US Army in the mid-1950s. It grew out of work by Charles H. Zimmerman of NACA on kinesthetic control: with the rotors below the pilot, the craft could be steered by shifting body weight, much like riding a bicycle or a surfboard. The Aerocycle had a cross-shaped frame with the pilot standing on a platform in a safety harness, above two contra-rotating 15-foot rotors driven by a 40-horsepower Mercury outboard motor. A motorcycle-style twist-grip throttle sat on the handlebars, and airbags on each arm plus a central rubber float served as landing gear. It made its first tethered flight on November 22, 1954, and its first free flight in January 1955 at the Brooklyn Army Terminal in New York. Early tests suggested untrained soldiers could learn to fly it in about 20 minutes, and the Army ordered 12. After testing moved to Fort Eustis, Virginia, in 1956, test pilot Capt. Selmer Sundby found it much harder to fly than expected. Two crashes, in which the rotors intermeshed and shattered, and the wider failure of the 'personal lifting device' concept ended the program. One HZ-1 survives at the US Army Transportation Museum at Fort Eustis.
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DID YOU KNOW? The 1955 New York Flying Bike refers to a prototype developed during a post war surge in personal aviation concepts, blending motorcycle mechanics with helicopter technology, in an attempt to create a compact, flying personal vehicle. This early example of a vertical takeoff craft typically featured dual rotor systems, a lightweight frame, and control systems adapted from both aviation and motorcycling. NOW YOU KNOW!
Silk Harvest: Silk, Reeled Straight From a Living Spider
Forced silking, or reeling, is a standard way for researchers to collect spider silk. In the Oxford Silk Group's demonstration, a golden orb-weaver, Nephila edulis, is sedated with carbon dioxide and pinned gently in place. A thread is pulled from the spinnerets with tweezers, fixed to a spool, and a motor reels it in. The group says 30 to 80 meters can be collected in one go, after which the spider goes back to its web. The silk drawn this way is mainly major ampullate (dragline) silk, plus some minor ampullate silk. Each silk type comes from its own gland, and a female of this species can make up to six types. Forced silking isn't identical to natural spinning: a 2004 study in Biomacromolecules found that restrained spiders brake the line hard, putting the fiber under far more stress than a spider descending on its dragline, which can change the silk's properties. Scale is the hard part. For the golden spider-silk cape shown at London's V&A from January 25 to June 5, 2012, Simon Peers and Nicholas Godley's team in Madagascar harnessed wild-caught golden orb-weavers 24 at a time and released them at the end of each day. The cape used the silk of 1.2 million spiders, and the V&A says about 23,000 spiders yield around an ounce of silk. The footage is the Oxford Silk Group's reeling demonstration.
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DID YOU KNOW? Spider silk can be drawn out manually by gently pulling threads from a spider's spinnerets, typically located at the rear of its abdomen. Researchers or silk harvesters immobilize the spider, often using a soft restraint or harness, and use tweezers or spools to slowly extract the silk as the spider naturally produces it. This process doesn't harm the spider, and can yield different types of silk, depending on which spinneret is activated. However, because spiders are territorial and produce less silk than silkworms, large-scale harvesting is inefficient. NOW YOU KNOW!
Starbase: A Rocket Factory That Became a City
Starbase is SpaceX's Starship build, test and launch site on the Boca Chica peninsula in Cameron County, Texas, about 20 miles east of Brownsville and close to the Mexican border. The area began as Kennedy Shores, a small subdivision founded in 1967 and later renamed Kopernik Shores; by the 2000s it was better known as Boca Chica Village and had only a handful of permanent residents. SpaceX started buying land there in 2012 and announced in August 2014 that Boca Chica would be its South Texas launch site, with limited construction that year and much larger work from about 2018. Prototype flight testing began in 2019. Elon Musk announced plans for a city called Starbase in March 2021, and SpaceX petitioned Cameron County for an incorporation vote in 2024. On May 3, 2025, voters approved incorporation 212 to 6, according to Cameron County's election results, and Bobby Peden, SpaceX's vice president of Texas test and launch, was elected mayor unopposed. The county commissioners court certified the result on May 20, 2025, making Starbase a Type C general-law city with a mayor and two commissioners. Supporters, including local economic development officials, point to jobs and tourism; some residents and conservation groups have raised concerns about land use, launch effects and the nearby wildlife refuge. The footage shows Starship hardware and the tall assembly buildings at the site.
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DID YOU KNOW? Starbase is Spacex's expansive launch and manufacturing complex, located in Cameron County, Texas, near Boca Chica Beach. Originally established in 2014 as a private launch site, it has evolved into the primary development and testing ground for the Starship rocket system, Spacex's fully reusable vehicle designed for missions to the moon, Mars, and beyond. In May 2025, Starbase was officially incorporated as a city, following a local vote, with leadership positions filled by SpaceX employees. NOW YOU KNOW!
Sprinkle Of Truth: A Sprinkler That Hits Itself
The sprinkler in the footage is an impact sprinkler, the classic 'tick-tick-tick' design on farm risers. Water under pressure leaves the main nozzle as a jet. A spring-loaded drive arm sits in front of it with a small deflector, or spoon, that dips into the stream. The jet knocks the arm aside, the spring swings it back, and it strikes the sprinkler body. Each strike nudges the head around a few degrees, so the jet sweeps a circle (or an arc, with trip stops) in small, even steps. Breaking up the stream this way also spreads the water more evenly across the wetted area. Other rotary sprinklers use a turbine or gear drive instead, as the Reel says. Orton Englehart, a citrus grower in Glendora, California, built the horizontal-action impact drive sprinkler in his shed around 1932 to 1933. His neighbor Clem LaFetra urged him to patent it. The application was filed on December 18, 1933, and US Patent 1,997,901 was granted on April 16, 1935. Englehart preferred farming and sold the rights to Clem and Mary LaFetra, who began production in their family barn on October 13, 1935, under the name Rain Bird. In 1990, the American Society of Agricultural Engineers named the Rain Bird impact sprinkler a historic landmark of agricultural engineering, crediting it with helping sprinkler irrigation spread to more than 50 million acres worldwide. The footage shows an impact sprinkler on a tripod stand in a sandy field, its arm swinging as the jet sprays across the sand.
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DID YOU KNOW? Non pop-up irrigation sprinklers, often used in agricultural or industrial settings, typically operate using water pressure to drive a rotating mechanism or oscillating arm. Water enters the sprinkler head through a hose or pipe, and is forced through a nozzle, creating a jet stream. In rotary sprinklers, this stream hits a small turbine or hammer-like arm that deflects the flow and causes the sprinkler to spin. NOW YOU KNOW!
Bathypterois grallator: A Fish on Stilts
Bathypterois grallator, the tripod fish or tripod spiderfish, is a deep-sea fish in the family Ipnopidae. George Brown Goode and Tarleton Bean described it in 1886. It lives on continental slopes and abyssal plains in the Atlantic, Pacific and Indian oceans, roughly between 40°N and 40°S, at depths of 878 to 4,720 m and water temperatures of 2.7 to 13.5 °C. It's the largest member of its genus, commonly over 30 cm long and up to about 43 cm. The lower lobe of its tail fin and both pelvic fins end in greatly elongated rays, up to about a meter long, or roughly three times its body length. When it settles, it lands on its pelvic fins first and then lowers its tail ray, standing on the three like a tripod. The rays are flexible when it swims but stiff when it stands, and researchers have suggested that the fish pumps fluid into them to stiffen them. Standing facing into the current, it waits for food to drift past and uses the tips of its pectoral fins to feel for prey, since its eyesight is very poor. Small tripod fish eat mostly copepods, amphipods and other small crustaceans. Larger ones, above about 24 cm, eat mostly small fish and decapods by weight. Each fish is a simultaneous hermaphrodite and may be able to fertilize its own eggs, which helps where mates are scarce. The IUCN lists it as Least Concern. The footage, credited to the Schmidt Ocean Institute, shows a pale tripod fish drifting and standing on long fin rays over a dark, sandy seafloor.
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DID YOU KNOW? The tripod fish is a deep sea species named for its remarkable ability to "stand" on the seafloor, using elongated fin rays from its pelvic and caudal fins, which can extend up to a meter long. Found at depths between 1,000 and 4,700 meters, this fish uses its stationary posture to conserve energy in the low light, low food environment of the abyss, waiting motionless for prey like small crustaceans to drift within reach. NOW YOU KNOW!
Uranium Ural: Two Reactors, Three Propellers
Ural is a Project 22220 nuclear-powered icebreaker, the third ship of the class after Arktika and Sibir. It's operated by Atomflot, part of Russia's state nuclear corporation Rosatom, and registered in Murmansk. Baltic Shipyard in Saint Petersburg laid its keel on July 25, 2016, and it was launched on May 25, 2019. Its reactors had already been lifted aboard while it was on the slipway. Delivery was planned for 2020 but slipped to 2022 because of delays with its domestically made steam turbines. After sea trials in October 2022, its flag was raised on November 22, 2022, and on December 2 it left Murmansk on its first icebreaking mission, to the Kara Sea. The ship is 172.7 m long and 34 m wide. Two 175-megawatt RITM-200 pressurized-water reactors, fueled with uranium-235 enriched to up to 20%, make steam for two turbogenerators. Their electricity drives three 20-megawatt motors, each turning a 6.2 m four-bladed propeller, for 60 megawatts in total. At full power in deep water, the design calls for breaking level ice 2.8 m thick at a steady 1.5 to 2 knots. By taking on or pumping out ballast water, the crew can vary the draft between about 9 m and 10.5 m. That lets the same ship work the deep Northern Sea Route and the shallow estuaries of Siberian rivers such as the Yenisei. The name had been chosen once before, for the last Arktika-class icebreaker in 1989, which was renamed 50 Let Pobedy during construction. The footage shows Ural's red, white and blue superstructure and dark-blue hull, marked 'УРАЛ' and 'РОСАТОМФЛОТ', moving through snow-covered ice at dusk.
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DID YOU KNOW? The Ural is a Russian nuclear-powered icebreaker designed to keep the Northern Sea Route navigable year-round through Arctic ice. Launched in 2019 and commissioned in 2022. it is powered by two RITM-200 nuclear reactors generating electricity for three massive propellers, allowing it to cut through ice up to 2.8 m thick. Its dual-draft hull lets it operate in both deep ocean and shallow coastal waters, adjusting its draft from 9 to 10.5 m. NOW YOU KNOW!
Second Impact: What If Ceres Hit Earth?
Ceres is the largest object in the main asteroid belt between Mars and Jupiter. Giuseppe Piazzi discovered it on January 1, 1801, and it was first hailed as a planet, then called an asteroid. Since August 24, 2006, it has been classed as a dwarf planet, the only one inside Neptune's orbit, though it also keeps its asteroid number, 1 Ceres. NASA's Dawn spacecraft orbited it from March 6, 2015, to the end of the mission on November 1, 2018. Dawn measured a mean diameter of 939.4 km and a mass of about 9.38 × 10^20 kg, about 40% of the whole asteroid belt's mass. It found a crust of ice, salts and hydrated minerals over a muddy interior, with brines that reach the surface in bright spots like those in Occator Crater. Ceres's orbit stays between 2.55 and 2.98 astronomical units from the Sun, well outside Earth's, so the Reel's collision is purely hypothetical. Still, the numbers are extreme. Anything falling to Earth hits at no less than Earth's escape speed, about 11.2 km/s. At 11 to 20 km/s, Ceres would carry about 6 × 10^28 to 2 × 10^29 joules of kinetic energy. That's my own back-of-envelope estimate (½mv²), not a published figure. A 2022 review in Nature Reviews Earth & Environment puts the Chicxulub impact that ended the age of dinosaurs at about 10^23 joules, so Ceres would deliver roughly half a million to two million times as much. Sleep and colleagues estimated in 1989 that an impactor of roughly 350 to 440 km could boil away Earth's oceans, and later models put the threshold nearer 700 km. Ceres is bigger than either. The footage is computer animation of a huge body striking Earth from orbit, with a glowing crater and a fireball sweeping across the planet.
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DID YOU KNOW? If the largest asteroid in the solar system Ceres, at about 940 km in diameter, were to collide with Earth, the impact would be cataclysmic on a global scale. Ceres, which orbits in the asteroid belt between Mars and Jupiter, contains enough mass to release energy orders of magnitude greater than the impact that wiped out the dinosaurs. A direct collision would vaporize the crust at the impact site, trigger worldwide earthquakes and tsunamis, and inject vast amounts of dust and aerosols into the atmosphere. NOW YOU KNOW!
Berlin Heart: A Child's Heart Pump, Outside the Body
The Berlin Heart EXCOR Pediatric is a pulsatile, air-driven ventricular assist device (VAD) that keeps infants and children with severe heart failure alive, usually while they wait for a heart transplant. It's paracorporeal: one or two blood pumps sit outside the body on the chest wall, connected by cannulas (tubes) through the skin to the heart's atrium or ventricle and to the great arteries. Each pump is a clear chamber split by a flexible membrane. A driving unit pushes and pulls air behind the membrane, so blood is drawn in and pushed out, and valves keep it flowing one way. Pumps come in small sizes for babies. The device grew out of the German Heart Institute Berlin. In 1990, its surgeons kept an 8-year-old boy alive on an adult-sized 50 mL pump until a transplant, and in 1992 an infant system with a 10 mL pump was implanted there for the first time. On December 16, 2011, the US FDA approved the EXCOR Pediatric under a Humanitarian Device Exemption as a bridge to transplant, after a 17-hospital study led by Texas Children's Hospital. The approved system uses the stationary Ikus driver. The smaller, battery-powered EXCOR Active driver weighs about 15 kg and runs at least 5 hours on batteries. In the US it's still an investigational device used under an FDA-approved study that began in November 2022. A 2026 JACC report found no major device malfunctions among its first 40 study patients. The footage shows a red blood pump with its connectors and a clear pump chamber lying on a hospital blanket.
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DID YOU KNOW? The Berlin Heart EXCOR® Pediatric is a life-saving ventricular assist device, or VAD, designed specifically for infants and children suffering from severe heart failure. Unlike implantable devices, the EXCOR® is paracorporeal, its blood pumps remain outside the body and are connected to the heart and major vessels via cannulae. These pumps are driven pneumatically by an external unit, such as the stationary Ikus, or the portable EXCOR® Active, which alternately applies positive and negative air pressure. NOW YOU KNOW!
Axisymmetry: Why Black Hole Models Assume Symmetry
Modelers often assume the gas around a black hole looks the same at every angle around the spin axis. Quantities then depend only on distance and polar angle, and a 3D simulation becomes a much cheaper 2D one. The shortcut has known limits. Cowling's anti-dynamo theorem (1933) says an axisymmetric magnetized flow can't regenerate its magnetic field, so 2D simulations lose the turbulence that drives accretion unless an artificial 'sub-grid' dynamo is added. And because infalling gas generally doesn't share the black hole's spin direction, many disks are expected to be tilted. Tilted disks break the symmetry and must be simulated in full 3D. The classic prediction that a thin disk's inner part aligns with the spin (Bardeen–Petterson, 1975) didn't appear in some GRMHD simulations of moderately thick disks.
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DID YOU KNOW? An axisymmetric distribution of matter around black holes refers to a configuration where physical properties such as density, pressure, and velocity are symmetric about a central axis, typically aligned with the black hole's spin axis. This assumption simplifies the complex geometry of accretion disks and relativistic jets, allowing for models that only vary with radial distance and polar angle, not azimuth. NOW YOU KNOW!
Ayam Cemani: Black Down to the Bones
The Ayam Cemani is a rare chicken breed from the island of Java in Indonesia. In Indonesian, 'ayam' means chicken, and the Javanese word 'cemani' means thoroughly black. The breed has probably been kept since the 12th century for religious and mystical purposes. It was described by Dutch colonial settlers, and Dutch breeder Jan Steverink first imported it to Europe in 1998. The breed standard calls for black feathers, beak, tongue, comb and wattles, and even the meat, internal organs and bones are black or gray. Roosters weigh about 2 to 2.5 kg and hens 1.5 to 2 kg. The color comes from fibromelanosis, a dominant trait in which pigment cells spread into the skin, connective tissue and organs. In 2011, a team led by Leif Andersson traced it to a complex rearrangement on chromosome 20 that duplicates the endothelin 3 gene (EDN3). Extra EDN3 activity drives the growth of melanocytes, the pigment cells. Silkie chickens, Korea's Ogye and India's Kadaknath share the same mutation, and a 2017 genome study comparing Cemani and Silkie concluded that it arose once and spread among breeds. The pigment doesn't reach the blood, which is red as in any chicken, despite a popular myth. The footage shows a row of glossy black birds on a perch and black hens with chicks in straw.
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DID YOU KNOW? The Ayam Cemani is a rare chicken breed originating from Java, Indonesia, renowned for its entirely black appearance, encompassing: feathers, skin, beak, comb, wattles, internal organs, and bones. This unique pigmentation results from a genetic condition called fibromelanosis, caused by a duplication in the EDN3 gene, leading to a hyperpigmentation throughout the bird's body. Despite myths, their blood remains red. NOW YOU KNOW!
Maslenitsa: Burning Winter in Effigy
Maslenitsa, also called Butter Week or Cheesefare Week, is an Eastern Slavic religious and folk holiday observed mostly in Russia, Ukraine and Belarus, and by their diaspora communities. It falls in the last week before Great Lent, the eighth week before Eastern Orthodox Easter, so its date moves every year. In 2025 it ran from February 24 to March 2. In 2026 it ran from February 16 to 22. Wikipedia describes it as a Christian observance that keeps many elements of older Slavic mythology. Meat is already off the table that week for observant Orthodox Christians, but butter, cheese, eggs and other dairy are still allowed, so the signature food is blini, thin pancakes. Ukrainians and Belarusians also make varenyky and syrniki. Customs include visits to family, sleigh rides, sledding, snowball fights, the storming of a snow fortress and, in some regions, a different tradition for each day. The week ends on Forgiveness Sunday, when people ask one another's forgiveness. A straw effigy, Lady Maslenitsa, is stripped of her finery and burned in a bonfire, and the next day, Clean Monday, Lent begins. Large public celebrations faded after 1917 under Soviet state atheism, returned in a more secular form in the 1960s and 1970s, and grew again after the Soviet Union ended. Moscow has held a yearly festival near Red Square since 2002. The footage shows masked revelers in horned and antlered costumes and huge wooden towers burning in the snow in front of a crowd.
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DID YOU KNOW? The Maslenitsa festival is a traditional Slavic Celebration marking the end of winter and the arrival of spring. Held the week before lent in Eastern Orthodox tradition, Maslenitsa mixes pagan and Christian customs, combining feasting, sleigh rides, folk music, dancing, and games. People enjoy rich foods like butter, cheese, and eggs before the fasting period, and festive activities include snowball fights, sledding, and burning a straw effigy of Lady Maslenitsa to symbolize winter's farewell. NOW YOU KNOW!
Blue Hour: The Blue Hour Comes Just Before Sunrise and Just After Sunset
The blue hour is the period of twilight just before sunrise or just after sunset, when the Sun is a few degrees below the horizon. Only indirect sunlight reaches the ground, and ozone absorption and scattering leave mostly blue wavelengths of the visible spectrum, so the sky and landscape take on a deep blue tint. How long it lasts depends on season and geographic location. The footage, credited to eastern_european_aesthetic, shows a snowy street at dusk.
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[...] is a short [...] or just after [...] takes on [...] indirect light [...] visible spectrum, [...] The Blue Hour [...] geographic location [...] NOW YOU KNOW!
Buzludzha: A Red Star Over the Balkans
The Monument House of the Bulgarian Communist Party stands on Buzludzha Peak in the Balkan Mountains (Stara Planina) of central Bulgaria, near the Shipka Pass. Bulgaria's communist government built it to commemorate an 1891 meeting nearby. There, socialists led by Dimitar Blagoev founded the party that became the Bulgarian Social Democratic Party, a forerunner of the Bulgarian Communist Party. Architect Georgi Stoilov designed it. Construction began on January 23, 1974, after the summit was leveled with explosives, lowering it from 1,441 m to 1,432 m. Party leader Todor Zhivkov opened it on August 23, 1981. The building is a circular, saucer-shaped hall of concrete, steel and glass beside a 70 m tower set with red-glass stars. Inside, about 937 m² of mosaics depicted the party's history and figures such as Marx and Lenin. Maintenance stopped after communism ended in 1989, and the building was stripped and left open to the weather, so part of the mosaic art has been lost. Wikipedia notes that earlier rescue proposals were mostly political and tied to the Bulgarian Socialist Party. In 2018, Europa Nostra listed it among Europe's seven most endangered heritage sites. The Buzludzha Project Foundation, founded in 2015 by architect Dora Ivanova, received a Getty Foundation grant in 2019 for a conservation management plan. A second grant in 2020 paid for emergency stabilization of the mosaics. The foundation describes the building today as a symbol of conflict between people with different views of the past. The footage shows the frost-covered peak, the saucer roof and the tower's red star at sunrise.
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DID YOU KNOW? The Buzludzha Monument, officially known as the House Monument of the Bulgarian Communist Party, is perched atop Buzludzha Peak in Bulgaria's Balkan Mountains. Completed in 1981, it was built to commemorate the founding of Bulgaria's Socialist Movement, and served as a conference and ceremonial center. It's design, often compared to a spaceship or UFO, features a circular saucer-like main hall with a 70 m tall tower bearing a red star, once illuminated and visible for miles. NOW YOU KNOW!
Unlimited Bladeworks: A Battlefield Planted With Swords
The Didgori memorial stands on the meadows of Mount Didgori, about 40 km west of Tbilisi in the Trialeti Range. It marks the Battle of Didgori, fought on August 12, 1121. King David IV of Georgia, known as David the Builder, defeated a much larger Muslim coalition led by the Artuqid commander Ilghazi, acting for the Seljuk sultan. Medieval chroniclers gave wildly inflated figures for Ilghazi's army. Modern Georgian historians estimate 100,000 to 250,000 men, against roughly 55,000 on David's side, a force that included Kipchak allies and a small number of Frankish knights. Accounts credit David's victory to surprise and the terrain. The Georgian Chronicles call it the 'miraculous victory'. The next year, 1122, David took Tbilisi and made it his capital. The battle is traditionally seen as opening Georgia's medieval golden age. Sculptor Merab Berdzenishvili and architect Tamaz Gabunia designed the memorial, which went up in the early 1990s and won them the State Prize of Georgia in 1995. Dozens of giant swords are driven into the ground like crosses. Colossal sculptures of warriors lie scattered across the meadows, and at the center stands a concrete column shaped like a deda bodzi, the central pillar of a traditional Georgian house. Since 1997, a commemoration called Didgoroba has been held at the monument every August 12. The footage shows the swords against a blue sky and spread across the grassy ridges, with wildflowers in the foreground.
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DID YOU KNOW? The Didgori Monument is a striking memorial complex located near Tbilisi, Georgia, commemorating the battle of Didgori in 1121, where King David IV of Georgia achieved a decisive victory over the Seljuk Turks, securing Georgia's independence and ushering in its medieval golden age. The monument features a series of towering metal swords planted in the ground, symbolizing the bravery of the Georgian warriors, along with stone commemorative plaques. NOW YOU KNOW!
Bunker Valentin: Built by Forced Labor, Never Used
Bunker Valentin is a bomb-proof U-boat factory that the German navy (Kriegsmarine) built on the Weser River at Bremen-Farge, in Bremen's Rekum district. With Allied bombers pounding open shipyards, the plan was to assemble Type XXI submarines there from prefabricated sections, on an assembly line. Construction ran from 1943 to March 1945. The memorial says it was the second-largest above-ground bunker in Europe. Wikipedia gives its size as about 426 m long and up to 97 m wide, with a height of 22.5 to 27 m. Its walls are about 4.5 m thick, and its roof is 4.5 m thick, rising to 7 m in one section. According to the memorial, up to 10,000 forced laborers built it: civilians from across Europe, Soviet prisoners of war, Italian military internees, concentration-camp prisoners from the nearby Neuengamme subcamp at Farge, and Gestapo labor-camp inmates. They worked 12-hour shifts day and night. The memorial puts the death toll at about 1,600, from hunger, disease and arbitrary killings, and 1,144 victims are known by name. On March 27, 1945, RAF 617 Squadron bombed the bunker with Grand Slam and Tallboy bombs. Two Grand Slams broke through the thinner western roof. Building stopped soon afterwards, and no submarine was ever finished there. After the war it was used for bomb tests. From the 1960s to 2010, the German navy (Bundesmarine) used it as a depot. A memorial sculpture, 'Vernichtung durch Arbeit' ('Extermination through Labour'), was erected in 1983. The bunker opened as the Denkort Bunker Valentin memorial on November 8, 2015. The footage shows the overgrown exterior walls and the dim interior bays behind fencing.
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DID YOU KNOW? Bunker Valentin is a massive WWII-era submarine factory built by Nazi Germany near Bremen, intended to produce U-boats in secret. Constructed between 1943 and 1945 using forced labor from concentration camps and prisoners of war, the bunker measures around 426 m long, 97 m wide, and 33 m high, with concrete walls and ceilings up to 7 m thick to withstand Allied bombing. NOW YOU KNOW!
Baikonur Cosmodrome: The Soviet Shuttle Left Behind
Buran was the Soviet Union's reusable spaceplane, built in response to the US Space Shuttle and launched on the Energia rocket. The orbiter Buran (1K) flew once, uncrewed, on November 15, 1988. It lifted off from Baikonur, circled Earth twice in 3 hours 25 minutes and landed automatically on the cosmodrome's runway. Funding dried up as the Soviet Union broke apart, and the program was suspended in 1993. The flown orbiter didn't survive. It was stored in Baikonur's main assembly building, MIK 112, which was originally built for the N1 Moon rocket. On May 12, 2002, the roof collapsed during repair work, killing eight workers and destroying Buran along with Energia hardware. The craft in the famous photos are two others, kept in a separate Assembly and Fueling Complex (MZK) at Site 112A. According to RussianSpaceWeb, the MZK is 150 m long, 80 m wide and 70 m high. Inside are orbiter 1.02, the second flight article, which was about 95–97% complete and never flew, and OK-MT, an engineering mockup. Both were moved there in 1995. Their doors later jammed, and RussianSpaceWeb calls the building a sarcophagus for both vehicles. Wikipedia, citing CNN, reports that a Russian-Kazakh company, Aelita, has owned them since 2005. Baikonur is in Kazakhstan. Under a 1994 agreement, Russia leases the whole Baikonur complex for $115 million a year, and the lease has since been extended to 2050. The footage looks down on an orbiter between rusting work platforms in the MZK, then shows the hall and the vehicles from the side.
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DID YOU KNOW? Deep in the Kazakh Steppe, the Baikonur Cosmodrome holds the decaying remains of the Soviet Buran space shuttle program. After the Soviet Union's collapse, two Buran orbiters and several prototypes were left inside enormous, crumbling hangars at the site. The most famous images show the orbiters covered in dust surrounded by rusting scaffolding, with one inside the MZK assembly building, often called the world's largest hangar. The Buran program was cancelled in the early 1990s after just one uncrewed flight in 1988. NOW YOU KNOW!
Food Recycling: Expired Snacks, Ground Into Feed
The footage shows a Chinese plant processing expired packaged food. Workers shovel bags of snacks onto conveyors, a machine strips the wrappers, and the food comes out as an orange meal. Chinese manufacturers sell these de-bagging lines for expired packaged food. One maker says its line opens bags, separates food from plastic by air and screening, and sends the food on to feed processing. Chinese media report that feed factories buy expired or near-expiry stock such as biscuits and mooncakes by the ton. In a September 2026 report, a Hebei feed-plant worker said moldy or spoiled products are rejected. The food is crushed and dried, tested against feed standards and blended with corn and soybean meal. Restaurant and household kitchen waste is a separate stream with stricter rules. After African swine fever spread through China in 2018, the government banned feeding food waste to pigs. Reuters reported that the ban pushed waste processors toward options such as insect farms. Kitchen waste is mostly treated by anaerobic digestion for biogas, composting, or conversion into fuel and fertilizer, according to a review by the French research agency CIRAD. On April 29, 2021, China passed its Anti-Food Waste Law, which took effect the same day. In 2025, according to the Wilson Center's New Security Beat, China launched 20 city pilot programs to collect and treat food waste for animal feed, partly to cut its reliance on imported soybeans.
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DID YOU KNOW? In China, expired food recycling has become an increasingly important industry, focusing on turning food waste into useful products, rather than sending it to landfills. Expired or unsellable food from supermarkets, restaurants, and households is typically collected and processed in specialized facilities. Depending on its type, the waste can be converted into animal feed, biofuel, compost, or biogas. NOW YOU KNOW!
Commercial Supersonics: London to New York in 3.5 Hours
Concorde was an Anglo-French supersonic airliner. A UK–France treaty of November 29, 1962 launched it, and it was developed and built by Sud Aviation (which became part of Aérospatiale in 1970) and the British Aircraft Corporation. The first prototype flew from Toulouse on March 2, 1969. Air France and British Airways began scheduled service on January 21, 1976, and New York JFK flights started on October 17, 1977. It had an ogival delta wing, a droop nose for landing visibility and four Rolls-Royce/Snecma Olympus 593 turbojets with afterburners. Its regular cruise was Mach 2.02, about 1,340 mph (2,150 km/h), with a maximum altitude of 60,000 ft. A New York–Paris flight took just under 3.5 hours, compared with about seven to eight hours on a subsonic jet. Its top speed was capped by heat: the aluminum skin could only tolerate about 127 °C. Only 20 were built, and Air France and British Airways were the only customers, with seven airframes each. Sonic booms kept supersonic flights over the sea. On July 25, 2000, Air France Flight 4590 crashed after takeoff from Paris, killing 113 people. It was Concorde's only fatal accident, and service resumed in November 2001. Both airlines retired the aircraft in 2003, citing rising maintenance costs, lower demand after the crash and the post-9/11 slump. Air France's last commercial flight was on May 30, 2003, and British Airways' was on October 24, 2003. Eighteen are preserved. No supersonic airliner has flown passengers since. On January 28, 2025, Boom Supersonic's XB-1 demonstrator broke the sound barrier over the Mojave Desert, a test for its planned Overture airliner. The footage shows a British Airways Concorde landing at night with its nose drooped.
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DID YOU KNOW? The Concorde was a British-French supersonic passenger jet that operated from 1976 to 2003, known for cutting transatlantic flight times in half by cruising at Mach 2, about 1,350 mph, or 2,180 kph, at altitudes up to 60,000 feet. Built by Aerospatiale and British Aircraft Corporation, it became a symbol of luxury and technological achievement, serving elite routes like London to New York, and Paris to New York. NOW YOU KNOW!
Hallgrímskirkja: A Church Shaped Like Basalt
Hallgrímskirkja is a Lutheran parish church of the Church of Iceland, on the Skólavörðuholt hill near the center of Reykjavík. At 74.5 m (244 ft), it is the largest church in Iceland and the second-tallest building in the country. It is named after Hallgrímur Pétursson (1614–1674), the poet and pastor who wrote the Passion Hymns. State Architect Guðjón Samúelsson was commissioned to design it in 1937. He is said to have modeled it on Iceland's landscape, especially columnar basalt formations like those at Svartifoss. Architectural historians usually classify it as Expressionist, and Copenhagen's Grundtvig's Church is often cited as an influence. Building it took 41 years. Construction began in 1945, the crypt beneath the choir was consecrated in 1948, and the tower and its wings were finished in 1974. The nave was consecrated on October 26, 1986. The nave is plain and pale, and a lift takes visitors up the tower to a viewing deck. The main concert organ was built by Johannes Klais of Bonn and inaugurated in December 1992. It is 15 m tall, weighs about 25 tonnes and has 72 stops and 5,275 pipes. The statue of Leif Erikson in front of the church is older than the building: the United States gave it to Iceland for the 1930 millennium of the Althing, Iceland's parliament. The footage shows the tower at dusk with the statue, the main doors, the façade against a sunrise, and a winter aerial view.
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DID YOU KNOW? The Hallgrímskirkja is a striking Lutheran church in Reykjavik, Iceland and one of the country's most iconic landmarks. Designed by architect Guðjón Samúelsson and completed in 1986 after decades of construction, the church's soaring 74.5 m or 244 ft tower, was inspired by Iceland's basalt lava columns and rugged landscapes, giving it a dramatic modernist appearance. Named after the Icelandic poet and clergyman Hallgrímur Pétursson, the church features a minimalist interior and a massive pipe organ with over 5,000 pipes. NOW YOU KNOW!
Lens Crafter II: Edging Machines Grind Lenses to the Exact Shape of a Frame
To fit glasses, an optician uses an edger machine that traces the specific frame, then grinds the prescription lens blank down to that shape, adjusting for the material; some lenses need specialized tools. The footage, credited to Eurekahnb, shows lenses being cut and ground in an edger.
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[...] to fit glasses [...] which transforms [...] a specific frame. [...] the prescription [...] edger machine, then grinds [...] the material, [...] or specialized tools [...] NOW YOU KNOW!
Branson: Richard Branson, Founder of the Virgin Group
Richard Branson, born July 18, 1950, started a mail-order record business in 1970 and launched the Virgin Records label in 1972. Virgin signed the Sex Pistols in 1977; the Rolling Stones came much later, in November 1991. In March 1992 he sold Virgin Music to Thorn EMI for about $1 billion. Virgin Atlantic flew its first flight on June 22, 1984. He was knighted in 2000 and founded Virgin Galactic in 2004, and on July 11, 2021, he flew to the edge of space on its Unity 22 flight. Forbes estimated his net worth at $2.8 billion on Oct. 17, 2026.
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DID YOU KNOW? Richard Branson is a British entrepreneur and founder of the Virgin Group, a sprawling conglomerate with businesses in music, airlines, telecommunications and space travel. Born in 1950, Branson first gained fame in the 1970s with Virgin Records, signing major artists Sex Pistols and the Rolling Stones. He later expanded into Virgin Atlantic Airways, Virgin Mobile and many other ventures, often using bold marketing and a risk-taking style that became his trademark. As of today, his net worth is estimated at several billion dollars, and he remains one of the most recognizable and colorful figures in global business. NOW YOU KNOW!
Gates: Bill Gates Co-Founded Microsoft and Later Left Its Board in 2020
Bill Gates, born in 1955 in Seattle, co-founded Microsoft, which became the leading personal-computer software company. He stepped down as CEO in 2000 and left the board in 2020. The Reel puts his 2025 net worth at about $104.6 billion and highlights his philanthropy through the foundation he co-founded, which works on health, education and poverty and was renamed the Gates Foundation in 2024. The footage, credited to Leon - 4k Nature Film, shows scenic footage.
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Did you know Bill Gates, born in 1955 in Seattle, is an American entrepreneur and philanthropist best known as the co-founder of Microsoft, which he helped build into the world's leading personal computing company before stepping down as CEO in 2000 and fully departing the board in 2020. As of 2025, Gates' net worth is estimated at around $104.6 billion, and he is heavily involved in global philanthropy through the Bill and Melinda Gates Foundation, focusing on health, education, and poverty reduction. NOW YOU KNOW!
Adelson: Miriam Adelson Trained as a Physician Before Becoming One of the World's Richest People
Miriam Adelson, born in 1945 in Tel Aviv, is an Israeli-American physician, philanthropist and businesswoman. She studied microbiology at the Hebrew University of Jerusalem and medicine at Tel Aviv University, researched addiction at Rockefeller University, and co-founded substance-abuse clinics in Tel Aviv and Las Vegas. The Reel puts her net worth at $27 to $35 billion as of 2025, a range consistent with published rich-list estimates. The footage, credited to United Hatzalah, shows Adelson at an event.
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Did you know Miriam Adelson an Israeli-American physician, philanthropist, and businesswoman recognized as one of the world's wealthiest individuals, with a net worth estimated between $27 billion and $35 billion as of 2025. Born in 1945 in Tel Aviv to Polish -Jewish immigrants, she earned degrees in microbiology and medicine from the Hebrew University of Jerusalem and Tel Aviv University, respectively. Specializing in drug addiction treatment, she conducted research at Rockefeller University and co-founded substance abuse clinics in Tel Aviv and Las Vegas. NOW YOU KNOW!
Wasp the Builder: Wasps Make Paper by Chewing Wood
Paper wasps and their relatives build nests from wood fibers chewed and mixed with saliva into a papery pulp. In spring a queen starts the nest on a sheltered surface, builds the first hexagonal cells, lays eggs and raises the first workers, which then take over expanding the nest with more cells and, in many species, a protective outer envelope. The footage, credited to in_sideout._, shows a wasp building a nest.
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Did you know, wasps build their nests by chewing wood fibers mixed with their saliva to form a papery pulp which they use to craft thin but durable walls. A queen typically starts the nest in spring, attaching it to a sheltered surface like a tree branch, eave, or underground cavity. She constructs the first few hexagonal cells, lays eggs in them, and feeds the larvae until they mature into workers. These worker wasps then take over construction, expanding the nests by layering additional cells and protective outer walls. NOW YOU KNOW!
Skypark: A 10-Acre Tower Project Is Going up in Visakhapatnam, India
The Reel describes Vaisakhi Sky Park, a residential project by Vaisakhi Developers in Yendada, Visakhapatnam, a port city in Andhra Pradesh, India. According to the Reel, it covers about 10.35 acres with seven 20-story towers and 1,119 three-bedroom apartments of 1,396 to 2,765 square feet; I could not confirm these figures independently. The footage, credited to Vaisakhi Developers, shows renderings and views of the site.
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Did you know, Vaisakhi Sky Park is a premium residential project by Vaisakhi developers, located in Yendada, Visakhapatnam. Spanning approximately 10.35 acres, the development comprises 7 towers, each rising 20 stories and offers a total of 1,119 luxury apartments. These 3 BHK units range in size from 1,396 to 2,765 square feet. NOW YOU KNOW!
Granular Flow: Broken Rock Can Pour Downhill Like a Liquid
In a granular flow, loose and fragmented rock and debris behave like a fluid and move rapidly downslope under gravity. Such flows often start when an unstable slope or slow-moving slide breaks apart, with triggers such as heavy rain, earthquakes or erosion. They can reach high speeds and travel long distances, endangering infrastructure and lives. The footage, credited to Centinela35, shows a rockslide flowing down a hillside.
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Did you know, a granular flow rock slide is a type of landslide where loose, fragmented rock and debris behave like a fluid, rapidly moving down slope under the force of gravity. This occurs when a slow-moving slide is unstable, often triggered by heavy rainfall, seismic activity, or erosion, causing the rock mass to break apart and flow as a dense mixture of particles. Unlike slow-moving slides, granular flows can travel at high-speeds, covering long distances and posing serious hazards to infrastructure and life. NOW YOU KNOW!
Hurricane Helene: Hurricane Helene Caused Catastrophic Flooding in Western North Carolina in September 2024
Hurricane Helene made landfall in Florida's Big Bend on September 26, 2024, and moved inland, bringing extreme rainfall to the southern Appalachians. Western North Carolina, including Asheville, Swannanoa and Chimney Rock, saw catastrophic flooding and landslides; some locations recorded over 30 inches of rain, and the storm ranks among the deadliest in the state's history. The footage, credited to Matt Van Swol, shows flood damage in the North Carolina mountains.
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Did you know? Hurricane Helene struck North Carolina in late September 2024, becoming one of the most devastating natural disasters in the state's history. After making landfall in Florida, the storm moved inland, bringing torrential rains and strong winds to western North Carolina. The mountainous regions, including areas like Asheville, Swannanoa, and Chimney Rock, experienced catastrophic flooding and landslides. Rainfall totals reached unprecedented levels, with some locations recording over 30 inches, leading to rivers overflowing and infrastructure being destroyed. Now, Now NOW YOU KNOW!
Bacterial Flagellum: Many Bacteria Swim Using a Spinning Molecular Motor
The bacterial flagellum is a whip-like filament driven by a rotary motor at its base, embedded in the cell envelope. The flow of ions, typically protons or sodium ions, across the membrane turns the motor, spinning the filament like a propeller. Counterclockwise rotation bundles the flagella so the cell runs forward; switching to clockwise makes it tumble and reorient. The footage, credited to Smart Biology, shows an animation of the flagellar motor.
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Did you know the bacterial flagellum moves through a rotary motor mechanism powered by the flow of ions, typically protons or sodium ions, across the bacterial cell membrane. This ion flow drives the protein complex at the flagellum's base, causing the flagellum to rotate like a propeller. Depending on the direction of rotation, the bacterium can move forward or run or tumble to reorient itself. NOW YOU KNOW!
OTO 76/62: The OTO Melara 76 mm Is One of the Most Widely Used Naval Guns
The OTO Melara 76 mm/62 is a compact, rapid-fire naval gun designed in Italy by OTO Melara (now part of Leonardo) and in service since 1964. Its automatic loading system and revolving magazine let it fire up to about 120 rounds a minute in the Super Rapid version, and it has been adopted by many navies for anti-air, anti-ship and shore-bombardment roles. The footage, credited to vexrmedia, shows the gun's loading mechanism and a mount firing at sea.
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The OTO Melara [...] the OTO 76/62 [...] rapid-fire [...] OTO Melara, [...] and widely adopted [...] NOW YOU KNOW!
Laser Weeder: Carbon Robotics' LaserWeeder Burns Weeds With Lasers Instead of Herbicide
The LaserWeeder from Carbon Robotics is a tractor-pulled implement that uses cameras and computer vision to identify weeds and kill them with high-powered lasers, with no herbicide or hand weeding. The Reel says it carries 30 industrial CO2 lasers and 42 high-resolution cameras, targets over 5,000 weeds a minute with submillimeter precision and covers up to 1.5 acres an hour; those are the maker's figures as quoted. The footage, credited to Carbon Robotics, shows the implement working a field.
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Did you know the laser weeder developed by Carbon Robotics is an advanced agricultural implement that utilizes artificial intelligence, computer vision, and high-powered lasers to autonomously identify and eliminate weeds without the need for herbicides or manual labor equipped with 30 industrial-grade CO2 lasers and 42 high-resolution cameras. The system can target and destroy over 5,000 weeds per minute with submillimeter precision, effectively covering up to 1.5 acres per hour. NOW YOU KNOW!
Bezos: Jeff Bezos Started Amazon in His Garage in 1994 as an Online Bookstore
Jeff Bezos, born in 1964 in Albuquerque, New Mexico, is an American entrepreneur who founded Amazon. After graduating from Princeton University in 1986 in electrical engineering and computer science, he worked on Wall Street, then launched Amazon in 1994 as an online bookstore. It expanded into a vast e-commerce, cloud computing and media company. He also founded the space company Blue Origin. The footage, credited to Personal Finance Insider, NDTV Profit, CNET Highlights, Earth Explore TV, Mr Mozart, KIRO 7 News and Amazon, shows Bezos and Amazon operations.
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[...] is an American [...] of Amazon, [...] company. [...] Albuquerque, [...] University in 1986 [...] and computer [...] in 1994 [...] expanded into [...] NOW YOU KNOW!
Andreessen: Marc Andreessen Co-Created Mosaic as a Student
Marc Andreessen, born July 9, 1971, in Cedar Falls, Iowa, co-created the Mosaic web browser while at the University of Illinois. Mosaic, the first widely used graphical browser, helped popularize the World Wide Web. In 1994 he co-founded Netscape Communications, whose Netscape Navigator dominated the early web. He later co-founded the venture firm Andreessen Horowitz (a16z). The footage, credited to a16z speedrun, shows Andreessen speaking.
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Did you know, Marc Andreessen is an American entrepreneur born on July 9th, 1971 in Cedar Falls, Iowa. While studying computer science at the University of Illinois, he co-created Mosaic, the first widely used web browser with a graphical interface which played a pivotal role in popularizing the world wide web. In 1994, he co-founded Netscape Communications, whose browser, Netscape Navigator, became a dominant force in the early internet era. NOW YOU KNOW!
Thiel: Peter Thiel Was Facebook's First Outside Investor
Peter Thiel, born in 1967 in Frankfurt, West Germany, is a German-American entrepreneur and investor. He co-founded PayPal and was its CEO until eBay acquired it in 2002, made a $500,000 investment as Facebook's first outside investor in 2004, later selling most of his stake for over $1 billion, and co-founded Palantir Technologies in 2003. He is also active in politics, the Reel notes. The footage, credited to Big Think, shows Thiel speaking.
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Did you know? Peter Thiel is a German-American entrepreneur, venture capitalist, and political activist. Born in 1967 in Frankfurt, Germany, he co-founded PayPal in 1998, serving as CEO until its acquisition by eBay in 2002. Thiel was the first outside investor in Facebook, providing a $500,000 investment in 2004, which he later sold for over $1 billion. He also co-founded Palantir Technologies in 2003, a data analytics firm serving both government and commercial clients. NOW YOU KNOW!
Machine's Best Friend: Spot Is a Four-Legged Robot That Maps Sites and Climbs Stairs
Spot, from Boston Dynamics, is a four-legged robot for autonomous navigation and data collection in difficult environments. Its sensors and cameras let it map surroundings, avoid obstacles, climb stairs and self-right after a fall. Modular payloads enable thermal imaging, acoustic inspection and remote communication in construction, energy and public safety. The footage, credited to Boston Dynamics, shows Spot walking.
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Did you know, Boston Dynamics Spot is a nimble, four-legged robot designed for autonomous navigation and data collection in challenging environments. Equipped with advanced sensors and cameras, Spot can map its surroundings, avoid obstacles, climb stairs, and self-right if it falls. Its modular design allows for various payloads, enabling tasks such as thermal imaging, acoustic inspections, and remote communication. Spot is utilized across industries including construction, energy, and public safety. NOW YOU KNOW!
Robot Parkour: Boston Dynamics' Atlas Humanoid Can Jump, Vault and Flip
Atlas is a humanoid robot from Boston Dynamics designed to show advanced mobility: running, jumping, vaulting and even backflips through parkour courses. The hydraulic Atlas was retired in April 2024 and replaced by an all-electric version with enhanced range of motion. The footage, credited to Boston Dynamics, shows Atlas running a parkour course.
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Boston Dynamics' [...] designed to [...] jumping, and even [...] developed with [...] hydraulic version [...] showcasing [...] Boston Dynamics [...] with enhanced [...] NOW YOU KNOW!
Dog Water: Dogs Curl Their Tongues Backward to Lap Water
Dogs can't seal their cheeks to suck, so they curl the tongue tip backward into a ladle, plunge it into the water and pull it out fast, drawing up a column of water by inertia. They close their jaws on the column before it falls, lapping several times per second. High-speed video studies, such as a 2015 PNAS paper, showed this. The footage, credited to eurekahnb, shows a dog drinking in slow motion.
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Did you know? Dogs drink water by curling their tongues backward to rapidly scoop liquid into their mouths. Unlike humans who use suction, dogs plunge their tongues into the water and quickly retract them, creating a column of water that rises due to inertia. They then snap their jaws shut around that column before gravity pulls it back down. This motion happens incredibly fast, up to four times per second, and relies on precise timing and coordination. High-speed video analysis has shown that the curved, ladle-like tongue shape is key to capturing enough water with each lap. NOW YOU KNOW!
Lava Land: Undersea Eruptions Can Build Islands From the Seafloor Up
Submarine volcanoes erupt lava, ash and gas that cool quickly in seawater and pile up into seamounts. With repeated eruptions they can break the surface and form islands or chains, as with Hawaii, and Iceland's Surtsey, which emerged in 1963. The footage, credited to crunchtimearchive, shows lava meeting the sea.
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Did you know? Ocean volcanoes create new land through underwater eruptions that release lava, ash, and gases, building up over time to form seamounts, islands, or even entire island chains. When magma reaches the seafloor and erupts, it cools rapidly upon contact with water, solidifying into rock. Repeated eruptions stack these layers until they rise above sea level, as seen in places like Hawaii. NOW YOU KNOW!
AI Surgery II: Robotic Microsurgery Systems Filter Out a Surgeon's Hand Tremor
Robotic microsurgery systems assist surgeons with procedures on nerves, blood vessels and eye tissue. They use real-time imaging, motion scaling, which turns large hand movements into tiny instrument motions, and tremor filtering; some research systems add AI to assist or partly automate steps. The footage, credited to Innovology, shows a robotic arm operating at small scale.
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Did you know AI-powered microsurgery machines combine robotic precision with artificial intelligence to assist or perform delicate surgical procedures at extremely small scales, often involving nerves, blood vessels, or ocular tissues? These systems use real-time imaging, motion scaling, and tremor filtration to enhance a surgeon's capabilities. NOW YOU KNOW!
Pendulum Waves: A Row of Pendulums of Slightly Different Lengths Makes Snaking Waves
A pendulum wave uses a row of pendulums whose lengths are tuned so each swings at a slightly different frequency. Released together, they drift in and out of phase, producing traveling waves, beats and symmetric patterns, and after a set period they return to their starting alignment. The footage, credited to life_spuzzle, shows a pendulum wave apparatus.
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Did you know, pendulum waves are a visual demonstration of synchronized motion created by arranging multiple pendulums of slightly different lengths in a line. When all pendulums are released at the same time, each swings at its own natural frequency, causing them to move in and out of phase with one another. This creates a mesmerizing wave-like effect where complex patterns like traveling waves, beats, and symmetry appear and shift over time before eventually returning to the starting alignment. NOW YOU KNOW!
Emerald Boas: Emerald Tree Boas Give Birth to Live Young
The northern emerald tree boa (Corallus caninus) is a nonvenomous South American rainforest snake, bright green with white zigzag markings. It is ovoviviparous: eggs develop inside the mother in membranes and the young are born live after about 6-8 months, typically 5-20 per litter, the Reel says. Newborns are often red or orange and turn green later. The footage, credited to thereptilereportofficial, shows an emerald tree boa.
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Did you know, the Northern Emerald Tree Boa is a non-venomous snake native to the rainforest of South America, known for its striking green coloration and white zigzag patterns. Unlike many snakes that lay eggs, this species gives live birth. Females carry the fertilized eggs inside their bodies, and the young develop within membranous sacs until birth. After a gestation period of around 6-8 months, the mother gives birth to 5-20 live young. NOW YOU KNOW!
Universal Sizing: The Observable Universe Is About 93 Billion Light-Years Across
The observable universe spans about 93 billion light-years. Its oldest light has traveled about 13.8 billion years, but expansion has carried those regions much farther away since. The Milky Way is about 100,000 light-years wide with an estimated 100 to 400 billion stars, and the observable universe holds hundreds of billions to perhaps 2 trillion galaxies. The footage, credited to explainingtheuniverse, shows a zoom out through space.
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Did you know, the universe is incomprehensibly vast, with the observable portion stretching about 93 billion light years across, meaning light from the farthest regions has taken over 13.8 billion years to reach us, but due to the universe's expansion, those regions are now much farther away. Our galaxy, the Milky Way, is about 100,000 light years wide, and contains an estimated 100 to 400 billion stars, while the observable universe contains over 2 trillion galaxies, each with billions of stars and potentially even more planets. NOW YOU KNOW!
Tesla Bot: Tesla's Optimus Robot Was Announced in 2021
Optimus, also called the Tesla Bot, is a humanoid robot in development at Tesla to handle repetitive or unsafe tasks. Announced in 2021, it was specified at about 5 ft 8 in (173 cm) and 125 pounds (57 kg). Tesla showed Optimus Gen 2 in December 2023 with faster walking, less weight and more dexterous hands. The footage, credited to Tesla, shows Optimus walking and handling objects.
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Did you know Tesla's Optimus, also known as the Tesla Bot, is a humanoid robot designed to handle repetitive or unsafe tasks. Using Tesla's AI and robotics technology first revealed in 2021, the robot stands about 5 foot 8 inches tall, weighs 125 pounds, and is intended to perform basic tasks like lifting, walking, and object manipulation. In 2023, Tesla showcased Optimus Gen 2, featuring better speed, lighter weight, and improved hand dexterity. NOW YOU KNOW!
Tidal Forces: The Moon Raises Ocean Bulges on Both Sides of Earth
The Moon's gravity pulls the ocean into a bulge on the side facing it, and a second bulge forms on the far side because the Moon pulls Earth's center more strongly than the far ocean. As Earth rotates through both bulges, most coasts see two high and two low tides in about 24 hours and 50 minutes, a lunar day. The Sun's gravity adds smaller tides. The footage, credited to explainingtheuniverse, shows an animation of Earth's tidal bulges.
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Did you know, the moon affects Earth's tides through its gravitational pull, which causes the oceans to bulge slightly on the side facing the moon, and also on the opposite side due to inertia. These bulges create high tides, while the areas at 90 degrees to the moon experience low tides. As the Earth rotates, different coastal regions pass through these bulges, resulting in two high tides and two low tides roughly every 24 hours. NOW YOU KNOW!
Rotor Hydraulics: Hydraulics Help Helicopter Pilots Move Rotor Controls Against Huge Forces
Helicopter flight controls change the pitch of main and tail rotor blades to manage lift, pitch, roll and yaw. In most larger helicopters, hydraulic actuators using pressurized fluid assist the pilot in moving the swashplate and linkages, which would otherwise be too hard to move under aerodynamic loads. The footage, credited to eurekahnb, shows a rotor head's linkages moving.
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Did you know? Helicopter rotor hydraulics play a critical role in controlling the main and tail rotor blades, allowing the pilot to manage lift, pitch, yaw, and roll with precision. The system uses pressurized hydraulic fluid to assist in moving heavy mechanical components that would be too difficult to operate manually, especially under aerodynamic loads. NOW YOU KNOW!
Neutron Binary: Two Neutron Stars in Orbit Slowly Spiral Together
In a binary neutron star system, the stars lose orbital energy by emitting gravitational waves, ripples in spacetime predicted by Einstein's general relativity. Their orbits shrink and speed up until they collide and merge. The first such merger was detected in gravitational waves and light on August 17, 2017 (GW170817). The footage, credited to astronomhub, shows an animation of two neutron stars merging.
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Did you know, when two neutron stars orbit each other in a binary system, they gradually spiral inward due to the emission of gravitational waves, ripples in space-time predicted by Einstein's theory of general relativity. As they lose energy, their orbital speed increases, and the distance between them shrinks until they collide and merge in a violent event. NOW YOU KNOW!
One Small Fall for Man...: Apollo Astronauts Often Tumbled on the Moon
During the Apollo Moon landings (1969-1972), astronauts sometimes fell over. Lunar gravity is about one-sixth of Earth's, and pressurized suits that protected them from extreme temperatures and micrometeoroids were bulky and stiff, making bending, turning and recovering balance difficult. Many adopted a bunny-hop gait to move efficiently. The footage, credited to galaxies, shows astronauts falling on the Moon.
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Did you know, astronauts falling over on the moon during the Apollo missions was a common occurrence due to the moon's low gravity, about one sixth of Earth's. Combined with the bulkiness of their spacesuits and limited mobility, the suits were designed to protect astronauts from extreme temperatures and micrometeoroids, but they made bending, turning, and recovering balance difficult. Even simple tasks like walking or lifting equipment became awkward, and astronauts often adopted a bunny-hop motion to move more efficiently. NOW YOU KNOW!
Nuclear Fireball: The First Seconds of a Nuclear Explosion
A nuclear detonation heats the weapon's residues to several tens of millions of degrees. Within a millionth of a second they give off X-rays that the surrounding air absorbs within a few feet, forming the incandescent fireball. The fireball's rapid early expansion compresses the air into a blast wave. For a low-altitude fission burst, roughly 50% of the energy goes into blast, 35% into thermal radiation and 15% into nuclear radiation.
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DID YOU KNOW? In the first seconds of a nuclear explosion a massive amount of energy is released almost instantaneously, creating a blinding flash of light and forming a rapidly expanding fireball that can reach temperatures of several million degrees Celsius. This intense heat vaporizes anything near the blast center, and causes surrounding air to ionize, forming a glowing plasma sphere. The fireball expands outward at supersonic speeds creating a powerful shockwave that flattens structures and emits intense thermal radiation capable of causing severe burns miles away. NOW YOU KNOW!
Traffic Controls: Congestion Pricing Charges Drivers to Enter Busy Zones at Peak Times
Congestion pricing charges drivers a fee to enter or drive in busy urban areas, usually during peak hours, to cut traffic and emissions and encourage public transit. Systems typically use cameras that read license plates, with fees varying by time, location or vehicle type. New York City launched the first U.S. program in Manhattan on January 5, 2025, after long political and legal debate. The footage, credited to cinetrove, shows city traffic.
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Did you know? Congestion pricing is a traffic management strategy where drivers are charged a fee to enter or travel within busy urban areas during peak hours, aiming to reduce traffic congestion, lower emissions, and encourage the use of public transportation. It typically involves electronic tolling systems with cameras that track vehicle license plates, and fees can vary based on time of day, location, or vehicle type. NOW YOU KNOW!
HHS: HHS Runs Medicare, Medicaid and Oversees the CDC, FDA and NIH
The U.S. Department of Health and Human Services (HHS) protects Americans' health and provides human services. It traces to the Department of Health, Education, and Welfare, created in 1953 and renamed HHS in 1979. It oversees Medicare, Medicaid and Affordable Care Act programs and agencies including the CDC, FDA and NIH. The Reel was posted in April 2025, shortly after HHS announced a major restructuring and staff cuts. The footage, credited to New York Post, shows HHS leaders and offices.
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Did you know the U.S. Department of Health and Human Services, or HHS, is a federal agency responsible for protecting the health of Americans and providing essential human services, especially for vulnerable populations. Established in 1953, HHS oversees major programs such as Medicare, Medicaid, the Affordable Care Act, and public health initiatives through agencies like the Centers for Disease Control and Prevention, Food and Drug Administration, and National Institutes of Health. NOW YOU KNOW!
Trade Wars: A Tariff Is a Tax on Imported Goods
Tariffs are taxes a government places on imported goods, used to raise revenue, protect domestic industries or gain leverage in trade disputes. They can support local producers but also raise prices for consumers and businesses and invite retaliatory tariffs from trading partners. The Reel was posted on April 8, 2025, days after the U.S. announced broad new tariffs on April 2, 2025, and amid retaliation and market turmoil. The footage shows the U.S. Capitol, container ships and markets.
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[...] government [...] used to [...] generate revenue. [...] tarrifs can [...] supporting [...] they can also [...] tariffs from [...] NOW YOU KNOW!
Fauci: Anthony Fauci Led NIAID From 1984 to 2022
Anthony Fauci directed the U.S. National Institute of Allergy and Infectious Diseases (NIAID) from 1984 until he stepped down in 2022, and served as chief medical adviser to the president from 2021 to 2022. He worked on responses to HIV/AIDS, SARS, Ebola and COVID-19, and became a prominent and politically debated public figure during the COVID-19 pandemic, including over public health communication and vaccination. The footage, credited to NBC News, Sky News and CBS Evening News, shows Fauci in interviews and briefings.
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Anthony Fauci [...] the director of [...] Diseases or NIAID [...] in 2022. [...] health crises [...] SARS, Ebola, and [...] in the federal [...] communication [...] and vaccination. NOW YOU KNOW!
Zuckerberg: Mark Zuckerberg Launched Facebook From Harvard in 2004
Mark Zuckerberg co-founded Facebook in 2004 while a student at Harvard and remains CEO of its parent, renamed Meta Platforms in 2021. Under him the company acquired Instagram (2012), WhatsApp (2014) and Oculus (2014) and expanded into messaging and virtual reality. He has been central to debates over data privacy, misinformation, content moderation and social media's political impact. The footage, credited to TheProjectTV, shows Zuckerberg.
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Did you know, Mark Zuckerberg is an American tech entrepreneur best known as the co-founder and CEO of Meta Platforms, formerly Facebook, which he launched in 2004 while attending Harvard. Under his leadership, Facebook grew into one of the world's largest social media platforms, acquiring companies like Instagram, WhatsApp, and Oculus. To expand its influence across digital communication, messaging, and virtual reality, Zuckerberg has been central to discussions around data privacy, misinformation, content moderation, and the political impact of social media. NOW YOU KNOW!
Soros: In 1992, George Soros's Fund Bet Against the British Pound and Won
George Soros is a Hungarian-American investor and philanthropist. He made his fortune in hedge funds, notably the Quantum Fund, and became famous on September 16, 1992 ('Black Wednesday'), when his short bet against the British pound earned about $1 billion as the U.K. left the European Exchange Rate Mechanism. Through his Open Society Foundations he has given more than $32 billion, the Reel says, to causes such as democracy, human rights and education. He is also a prominent, and often debated, political donor. The footage, credited to Bloomberg Originals, shows Soros.
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Did you know George Soros is a Hungarian-American billionaire investor, philanthropist, and political activist best known for his work in finance and his global influence through philanthropy and political engagement. He made his fortune through hedge fund management, most notably with the Quantum Fund, and became famous for breaking the Bank of England in 1992 by shorting the British Pound. Soros has donated over 32 billion dollars through his open society foundations, supporting causes such as democracy, human rights, education, and criminal justice reform across the globe. NOW YOU KNOW!
Flying Fishermen II: Kingfishers Dive Headfirst to Snatch Fish
Kingfishers are a worldwide family of brightly colored birds with sharp bills and keen eyesight. Many hunt by perching quietly over water, then diving headfirst to catch small fish or aquatic insects. A transparent third eyelid protects the eye underwater, and they can compensate for refraction to strike accurately, the Reel says. The footage, credited to harrycollinsphotography, shows a kingfisher diving.
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Did you know? Kingfishers are a diverse family of brightly colored birds known for their sharp beaks, excellent vision, and impressive fishing skills. Found worldwide near rivers, lakes, and coastlines, they hunt by perching quietly before diving headfirst into water to catch small fish or aquatic insects. Their eyes have special adaptations, including a transparent third eyelid and the ability to compensate for refraction, allowing accurate targeting underwater. NOW YOU KNOW!
Canadian Moose: A Moose Can Stand 2.1 Meters at the Shoulder
Moose (Alces alces) live across Canada's boreal and mixed forests, wetlands and tundra edges. Large bulls can stand about 2.1 meters (7 feet) at the shoulder and weigh over 600 kg (1,300 pounds), and grow broad antlers spanning up to about 1.8 meters, used in rut displays and fights. Moose are strong swimmers and can dive several meters to feed on aquatic plants. The footage, credited to kuamzz, shows a bull moose in a forest.
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Did you know? The Canadian moose is the largest subspecies of moose found across forests, wetlands, and tundra in Canada. Standing up to 2.1 meters, or 7 feet at the shoulder, and weighing over 600 kilograms, or 1,300 pounds, these massive herbivores thrive in boreal and mixed forests, males, or bulls. Grow large, broad antlers that can span over 1.8 meters, or 6 feet, which they use for mating displays and dominance fights during the rut. Despite their size, moose are strong swimmers, capable of diving 5 meters, or 16 feet, to feed on underwater vegetation. NOW YOU KNOW!
TAKEOFF: Ski Jumpers Are Scored on Distance and Style
In ski jumping, athletes slide down an in-run, launch from the take-off and fly as far as possible before landing on a sloped hill. Scores combine distance points with judges' style points for flight form and landing. Since 2009, compensation points adjust for wind and for changes to the start gate to keep competition fair. The footage, credited to Red Bull, shows a ski jumper in flight.
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Did you know, ski jumping is a winter sport where athletes glide down a steep run and launch themselves off a jump, or take off, to achieve maximum distance and style in the air before landing on a sloped hill. Scoring is based on distance jumped, form during flight, and landing technique, with judges awarding style points and precise measurements determining the distance score. Wind conditions and gate adjustments are factored in through compensation systems to ensure fairness. NOW YOU KNOW!
Stay Pressed: Cold-Pressed Sunflower Oil Is Squeezed Out Below 50 °C
Sunflower oil is extracted from seeds by pressing, solvent extraction or both. In cold pressing, a screw (expeller) press squeezes the seeds while keeping temperatures low, the Reel says below 50 °C, to preserve flavor and nutrients, yielding a natural, unrefined oil. Hot pressing and refining give higher yields. The footage, credited to explainingtheuniverse, shows oil flowing from a screw press.
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Sunflower oil [...] using either [...] In cold pressing [...] below 50 °C [...] to preserve [...] with a [...] screw press [...] a natural [...] NOW YOU KNOW!
Machine Motors: Precision Motors Can Position to Fractions of a Degree
Precision electric motors such as servo motors, stepper motors and brushless DC (BLDC) motors use microcontrollers, sensors and feedback loops to control speed, torque and position very accurately, down to fractions of a degree. They are essential in robotics, CNC machining, medical devices and aerospace. The footage, credited to action.box, shows motors moving with precision.
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Did you know? Precision in electronic motors is achieved through advanced control systems, high-quality components, and precise feedback mechanisms, allowing for extreme accuracy in speed, torque, and positioning. Motors like servo motors, stepper motors, and brushless DC, or BLDC motors, use microcontrollers and sensors to regulate movement down to fractions of a degree, making them essential for robotics, CNC machining, medical devices, and aerospace applications. NOW YOU KNOW!
Starlink: Starlink Beams Internet From Thousands of Low-Orbit Satellites
Starlink is a satellite internet service from SpaceX that provides broadband to underserved and remote areas. It uses a large constellation of small satellites in low Earth orbit that communicate with user dishes and ground stations. Older satellite internet relied on geostationary satellites with high latency; Starlink's much lower orbits shorten transmission time. The footage, credited to Starlink, shows dishes and a Starship deploying satellites.
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[...] satellite internet [...] SpaceX, [...] access across [...] underserved [...] small satellites [...] that communicates [...] satellite internet, [...] with high latency, [...] transmission [...] NOW YOU KNOW!
The Boring Company: The Boring Company Runs Teslas Through Tunnels Under Las Vegas
The Boring Company, founded by Elon Musk in 2016, digs tunnels intended to reduce urban traffic. Its Vegas Loop carries passengers in Tesla vehicles through tunnels under the Las Vegas Convention Center. The company aims to cut tunneling costs with its own boring machines. The footage, credited to CBS Mornings and The Boring Company, shows cars in tunnels and a tunnel boring machine.
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[...] Company, [...] reducing urban [...] transportation [...] envisions electric [...] speeds through [...] custom-built tunnel [...] reduce the cost [...] NOW YOU KNOW!
Neuralink: Neuralink Implants a Coin-Sized Chip With Thin Threads Into the Brain
Neuralink, co-founded by Elon Musk in 2016, develops implantable brain-computer interfaces (BCIs): a small chip with ultra-thin electrode threads that records and can stimulate brain activity. Its near-term aim is helping people with paralysis control devices; its stated long-term goal is human-AI symbiosis. The first human implant was in January 2024. The footage, credited to Neuralink, ABC News and Royalty Free Content, shows the implant and animations.
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Neuralink is a [...] in 2016, [...] or BCIs, [...] brain and [...] implantable chip [...] stimulate brain [...] long term goals [...] like paralysis, [...] facilitate symbiosis [...] intelligence. NOW YOU KNOW!
Heat Sinks: Some Heat Sink Fins Are Sliced From a Solid Block
Heat sinks draw heat away from electronics through many thin fins that increase surface area. Fins can be made by extruding aluminum profiles, CNC milling, or skiving, in which a sharp blade slices thin fins up from a solid block of copper or aluminum. The footage, credited to yh1234581, shows fins being sliced into a metal block.
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[...] are sliced [...] CNC milling, [...] or diamond [...] structure. [...] aluminum profiles [...] blades. NOW YOU KNOW!
Wet Response: Pruney Fingers Are Your Nervous System at Work
Fingers and toes wrinkle after soaking because the autonomic nervous system constricts blood vessels under the skin, reducing volume and pulling the skin into folds; it does not happen if the finger's nerves are cut. Some studies suggest the pattern improves grip on wet objects. The footage, credited to photoowlsocial, shows a fingertip wrinkling in water.
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[...] in water [...] the autonomic [...] When submerged, [...] effect is caused [...] creating a pattern [...] NOW YOU KNOW!
Quenching: An Induction Coil Can Heat a Steel Surface Red-Hot in Seconds
High-frequency induction hardening heats the surface layer of a steel or cast iron part with alternating current in a coil, then rapidly quenches it in water, oil or a polymer solution. The result is a hard, wear-resistant surface over a tougher, more ductile core. The footage, credited to metalaworld, shows a glowing part being heated and quenched.
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Did you know? High frequency quenching is a heat treatment process used to harden metal surfaces by rapidly heating them with induction heating, followed by rapid cooling or quenching. This method uses high frequency alternating current to generate localized heat in the surface layer of a metal part, typically steel or cast iron, while keeping the core relatively unaffected. The heated metal is then quenched with water, oil, or polymer solutions, creating a hardened surface with improved wear resistance while maintaining a tough, ductile core. NOW YOU KNOW!
Cell Death: Your Cells Are Built to Self-Destruct When Needed
Apoptosis is programmed cell death, a tightly regulated process that removes damaged or unneeded cells. Unlike necrosis, which is uncontrolled and inflammatory, apoptosis is triggered by internal stress such as DNA damage or oxidative stress, or by external signals such as death ligands and immune cells, and proceeds through caspases, enzymes that dismantle the cell. The footage, credited to michaeloftiktokofficial, shows a cell breaking apart under a microscope.
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Did you know, apoptosis is a controlled process of programmed cell death, essential for maintaining healthy tissues and eliminating damaged or unnecessary cells. Unlike necrosis, which is an uncontrolled and inflammatory form of cell death, apoptosis is highly regulated by cellular signals and involves a series of molecular events. The process is triggered by internal stress, DNA damage or oxidative stresses, or external signals, death ligands, or immune responses, leading to the activation of caspases, specialized enzymes that break down cellular components. NOW YOU KNOW!
SpaceX: Elon Musk Founded SpaceX in 2002 With Mars as the Long-Term Goal
SpaceX is a private aerospace company founded by Elon Musk in 2002 with the long-term aim of enabling Mars colonization. It developed the Falcon 9 and Falcon Heavy rockets, whose boosters land for reuse, and the Dragon capsule, the first commercial vehicle to carry astronauts to the International Space Station, in 2020. Its Starship is designed to be fully reusable for Moon and Mars missions. The footage, credited to Black Hole and SpaceX, shows launches, Dragon and Starship.
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[...] private aerospace [...] in 2002, [...] Mars colonization. [...] rockets, [...] Falcon 9 and [...] The company's [...] commercial vehicle [...] fully reusable [...] Mars missions. NOW YOU KNOW!
DOGE: DOGE Was Created by Executive Order on January 20, 2025
The Department of Government Efficiency (DOGE) was established by executive order on January 20, 2025, by renaming the U.S. Digital Service, with a stated goal of modernizing federal technology and cutting spending. Elon Musk was its most prominent figure. It is not a cabinet-level department. Around the time of this Reel, the administration announced federal workforce reductions, including plans to cut Department of Defense civilian staff, and floated returning savings to taxpayers. Its actions have been the subject of political debate and lawsuits. The footage, credited to United States Institute of Peace, shows a federal building.
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Did You Know? The Department of Government Efficiency, or Doge, is an initiative established by the Trump administration on January 20, 2025, aiming to streamline federal operations, reduce waste, and enhance productivity. Led by entrepreneur Elon Musk, Doge focuses on modernizing federal technology and software to maximize governmental efficiency. The department has initiated significant measures, including workforce reductions within the Department of Defense, targeting a decrease of over 50,000 civilian positions. Additionally, Doge has proposed distributing the savings from efficiency improvements to taxpayers through stimulus payments. NOW YOU KNOW!
Tesla: Tesla Was Founded in 2003 by Martin Eberhard and Marc Tarpenning
Tesla was founded in 2003 by Martin Eberhard and Marc Tarpenning; Elon Musk led its 2004 funding round, became chairman and later CEO. Its first car, the Roadster, arrived in 2008, followed by the Model S (2012), Model X, Model 3 and Model Y. The company also sells energy storage and solar products. The footage, credited to Tesla, shows Tesla vehicles.
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Did you know? Tesla is a leading electric vehicle and clean energy company founded in 2003 by Martin Eberhard and Marc Tarpenning. With Elon Musk joining shortly after as its most prominent figure, Tesla revolutionized the EV industry with high-performance, long-range electric cars, starting with the Roadster in 2008, and later expanding to mass-market models like the Model S, Model 3, Model X and Model Y. NOW YOU KNOW!
Far From Home: Spider-Man: Far From Home Closed the Infinity Saga
Spider-Man: Far From Home (2019) served as the epilogue to Endgame and the Infinity Saga, following Peter Parker on a European school trip as he struggles with Iron Man's legacy. The narrator praises Tom Holland and Jake Gyllenhaal's illusion-wielding Mysterio and the London finale, while saying the high school comedy is a bit overplayed. These are the narrator's opinions. The footage, credited to RememberThis Clips, shows scenes from the film.
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Spider-Man Far From Home serves as a fun yet emotional epilogue to Endgame, exploring Peter Parker's struggle to live up to Iron Man's legacy while trying to enjoy a European school trip. Tom Holland shines as Spider-Man, caught between teenage awkwardness and superhero responsibility, while Jake Gyllenhaal's Mysterio delivers a unique MCU villain portrayal, using illusion-based tech to manipulate reality. The film balances humor, romance and action, with standout sequences like Mysterio's mind-bending hallucinations and the final battle in London, while some found the high school comedy elements a bit overplayed. Far From Home successfully expands Spider-Man's story, while closing out the Infinity Saga with a fresh new direction. NOW YOU KNOW!
On Your Left: Avengers: Endgame Closed 11 Years of MCU Stories
Avengers: Endgame (2019) concluded the Infinity Saga after 11 years of films. The narrator highlights the post-snap opening, the time heist through earlier films, and the final battle with Captain America wielding Mjolnir, the return of the dusted heroes and Iron Man's sacrifice; some found the time-travel logic confusing and 'Fat Thor' undercut his emotional arc. These are the narrator's opinions. The footage, credited to Film HD 60FPS, shows scenes from the film.
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Avengers Endgame is the culmination of 11 years of MCU storytelling, delivering an emotionally-charged, time-travel-fueled epic that brings closure to the Infinity Saga. The first act explores the aftermath of the snap, showing the Avengers at their lowest, before leading into a time heist revisiting key moments from past films. The final battle, featuring Captain America wielding Mjolnir, Iron Man's ultimate sacrifice and the return of dusted heroes, is one of the most satisfying action sequences in superhero history. The film balances fan service, humor, and heartbreak, though some found the time-travel logic confusing, and Fat Thor's comedic arc undercut his emotional depth. Ultimately, Endgame succeeds as both a blockbuster spectacle and a poignant farewell to Tony Stark and Steve Rogers, cementing its place as the most impactful film in the MCU. NOW YOU KNOW!
Captain Marvel: Captain Marvel Was the MCU's First Female-Led Film
Captain Marvel (2019) was the first MCU film led by a female hero, with Brie Larson as Carol Danvers in a 1990s-set origin story featuring the shape-shifting Skrulls. The narrator praises its nostalgia and cosmic action, mentions critics who found Carol's arc lacking emotional depth, and notes that it set up her role in Endgame. These are the narrator's opinions. The footage, credited to PEKKA B-SPAN (partly legible), shows scenes from the film.
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Captain Marvel serves as the MCU's first female-led film, introducing Carol Danvers, played by Brie Larson, in a 90s-era origin story packed with nostalgia, shape-shifting Skrulls and cosmic action. The film explores Carol's journey of self-discovery as she breaks free from the Kree's manipulation and embraces her true power, leading to some visually stunning sequences. Some critics found Carol's character arc lacking emotional depth. Nonetheless, her introduction sets up her pivotal role in Endgame, and the film successfully expands the cosmic side of the MCU. NOW YOU KNOW!
Ant-Man and the Wasp: Ant-Man and the Wasp Was a Light Breather After Infinity War
Ant-Man and the Wasp (2018) followed Infinity War with smaller-scale stakes. The narrator praises Paul Rudd's Scott Lang, Evangeline Lilly's Hope van Dyne as the Wasp and the size-shifting fights, calls the villain Ghost underdeveloped, and notes that the Quantum Realm became crucial in Endgame and that the mid-credits scene ties the film to the snap. These are the narrator's opinions. The footage, credited to TNT, shows scenes from the film.
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Ant-Man and the Wasp is a light-hearted breather after Infinity War, bringing back the fun, small-scale stakes of the first film while expanding on the Quantum Realm. Paul Rudd's Scott Lang remains effortlessly charming, while Evangeline Lilly's Hope Van Dyne takes center stage as the Wasp, finally getting her superhero moment. The movie's strength lies in its humor and creative action sequences, especially the size-shifting fights. But its villain, Ghost, feels underdeveloped compared to past MCU antagonists. The film's biggest contribution to the larger MCU is its exploration of the Quantum Realm, which becomes crucial in Endgame. While not groundbreaking, Ant-Man and the Wasp is a fun, fast-paced sequel with plenty of laughs, but its mid-credits scene, where the snap wipes out Hank, Janet, and Hope, steals the spotlight by tying it back to the devastation of Infinity War. NOW YOU KNOW!
Perfectly Balanced: In Infinity War, the Villain Wins
Avengers: Infinity War (2018) brought a decade of MCU films to a head against Thanos. The narrator calls Thanos the franchise's strongest antagonist, highlights Gamora's death on Vormir and Thor's arrival in Wakanda with Stormbreaker, and calls the ending, in which Thanos erases half of all life, one of superhero cinema's boldest moves. These are the narrator's opinions. The footage, credited to ZikTek, shows scenes from the film.
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Avengers Infinity War is the ultimate payoff for a decade of MCU storytelling, delivering a high-stakes, action-packed ensemble epic where the heroes finally face Thanos. Unlike past villains, Thanos is fully developed, with clear motivations and an unsettling sense of conviction. This helps set him apart as the franchise's strongest antagonist. The balance between humor and tension works well, but the standout moments are the emotional gut punches, from Gamora's death on Vormir to Thor's heartbreaking arrival in Wakanda with Stormbreaker. The ending, where Thanos snaps half of all life out of existence, is one of the boldest moves in superhero cinema, leaving audiences in shock as beloved heroes turn to dust. Infinity War is a rare blockbuster, where the villain wins, setting the stage for Endgame with an unforgettable cliffhanger. NOW YOU KNOW!
Wakanda Forever: The Title Says Wakanda Forever; the Reel Reviews the 2018 Black Panther
Despite its title, the Reel reviews Black Panther (2018), not the 2022 sequel Black Panther: Wakanda Forever. The on-screen commentary praises its Afrofuturist vision of Wakanda, Chadwick Boseman's charisma and Michael B. Jordan's Killmonger, whose motives touch on family legacy and responsibility, while calling the CGI-heavy finale one of its weaker points. These are the narrator's opinions. The footage, credited to Lania, TNT, Marvel Fan Studios and Marvel Universe Entertainment, shows scenes from the film.
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[...] significant [...] Afro-futuristic world [...] advanced nation [...] charisma [...] Killmonger, [...] are deeply [...] family legacy, [...] responsibility, [...] than just a [...] from the vibranium [...] CGI-heavy [...] weaker points. NOW YOU KNOW!
Ragnarok: Thor: Ragnarok Remade Thor as a Comedy
Thor: Ragnarok (2017), directed by Taika Waititi, shifted the Thor films toward a colorful, comedic, cosmic tone. The narrator praises Chris Hemsworth's comic timing, Loki, Hulk and Korg, and how the film strips Thor of Mjolnir, Asgard and an eye; it calls Cate Blanchett's Hela striking but underused. These are the narrator's opinions. The footage, credited to AlphaClips, shows scenes from the film.
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Thor Ragnarok reinvents the Thor franchise by fully embracing a colorful, comedic, and cosmic tone under Taika Waititi's direction. This film ditches the overly serious Asgardian drama the previous movies, instead leaning into irreverent humor, vibrant visuals, and high-energy action. Chris Hemsworth finally gets to flex his comedic chops, while Loki, Hulk, and a new fan favorite, Korg, add to the fun. Cate Blanchett's Hela is visually striking and powerful, though she suffers from the typical MCU villain problem of limited screen time. The film's biggest strength is how it deconstructs Thor, stripping him of Mjolnir, Asgard, and even an eye, forcing him to grow beyond his hammer. NOW YOU KNOW!
Homecoming: Spider-Man: Homecoming Gave Peter Parker an MCU High School Story
Spider-Man: Homecoming (2017) brought Tom Holland's Peter Parker into his own MCU film, skipping a full origin story in favor of a coming-of-age approach. The on-screen commentary praises Michael Keaton's Vulture, Adrian Toomes, and his blue-collar motivation, and the reveal scene, while saying the film sometimes plays it safe. These are the narrator's opinions. The footage, credited to ONE Media, TopMovieClips and Movieclips, shows scenes from the film.
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[...] brings Peter Parker [...] origin story for [...] age approach. [...] eagerness, [...] with being [...] Vulture, one of [...] collar motivation [...] revealing Adrian [...] scene is one [...] plays it safe [...] Spider-Man films, [...] make it a [...] NOW YOU KNOW!
Boosting My EGO: Guardians of the Galaxy Vol. 2 Centers on Peter Quill and His Father, Ego
Guardians of the Galaxy Vol. 2 (2017) builds on the first film's colorful visuals, 1980s music and found-family humor. The narrator highlights Peter Quill's relationship with his father, Ego, played by Kurt Russell, themes of fatherhood and belonging, Yondu's funeral and Rocket's growth, while saying the comedy sometimes undercuts drama and the pacing drags. These are the narrator's opinions. The footage, credited to JoBlo Superheroes, shows scenes from the film.
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Guardians of the Galaxy Vol. 2 doubles down on what made the first film great. Colorful visuals, 80's music, and dysfunctional family dynamics. While pushing the emotional depth even further, the core of the movie is Peter Quill's relationship with Ego, played by Kurt Russell, whose charm masks a sinister god-complex. The film leans heavily into comedy, sometimes at the expense of dramatic moments, but it shines in its exploration of themes like fatherhood, belonging, and sacrifice. While the pacing drags at times and the plot is simpler than the first film, the emotional payoff in the final act, Yondu's funeral, and Rocket's growth make this a heartfelt entry in the MCU. NOW YOU KNOW!
The Sorcerer Supreme: Doctor Strange Brought the Mystic Arts Into the MCU
Doctor Strange (2016) introduced the mystic arts to the Marvel Cinematic Universe, with Benedict Cumberbatch as Stephen Strange. The narrator praises its Inception-style city folding and mirror-dimension battles and its time-loop ending against Dormammu, but calls Kaecilius forgettable, notes comparisons between Strange's arc and Tony Stark's, and mentions debate over Tilda Swinton's casting as the Ancient One. These are the narrator's opinions. The footage, credited to ClipsyBox, shows scenes from the film.
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Dr. Strange brings a fresh, mind-bending visual style to the MCU, introducing the mystic arts and expanding the universe beyond science and technology. Benedict Cumberbatch nails the role of Stephen Strange, though some critiques compare his arc to Tony Stark's, an arrogant genius humbled by trauma. The film's biggest strengths are its stunning visual effects, especially the Inception-style city folding and kaleidoscopic mirror-dimension battles, which make it one of the most visually unique Marvel films. However, Kaecilius is another forgettable villain, and the controversy around Tilda Swinton's casting as the Ancient One sparks some debates. The time loop ending against Dormammu is clever, subverting the usual big CGI fight, making Dr. Strange a strong but formulaic origin story. NOW YOU KNOW!
Civil War: Captain America: Civil War Opened the MCU's Phase Three
Captain America: Civil War (2016) began Phase Three of the Marvel Cinematic Universe. The narrator calls it 'Avengers 2.5' and praises its ideological clash between Tony Stark and Steve Rogers over government oversight, the introductions of Black Panther and Spider-Man, and the airport battle, while noting that some fans found Zemo's plan convoluted. These are the narrator's opinions. The footage, credited to Multiverso dos Herois, shows scenes from the film.
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Let's start Phase 3 with Captain America's Civil War. This movie is basically Avengers 2.5, delivering one of the MCU's most emotionally charged conflicts. Instead of a typical villain, the story is driven by ideological differences with Tony Stark and Steve Rogers clashing over government oversight of superheroes. The film does a great job of balancing multiple characters, introducing Black Panther and Spider-Man in standout moments, while the airport battle remains one of the most entertaining fight sequences in the franchise. However, some fans felt Zemo's plan was overly convoluted, and the resolution lacked long-term consequences. Still, Civil War is a top tier MCU film that reshaped the Avengers and set the stage for Infinity War. NOW YOU KNOW!
Mk-II Aurora: Dawn Aerospace's Mk-II Aurora Takes off From a Runway on Rocket Power
The Mk-II Aurora is a small, remotely piloted, reusable suborbital spaceplane built by New Zealand-based Dawn Aerospace. It takes off and lands horizontally on ordinary runways and is designed to eventually exceed 100 km. Its first rocket-powered flights were on March 29-31, 2023, at Glentanner Aerodrome on New Zealand's South Island, reaching about 315 km/h (196 mph); in November 2024 it flew supersonic. The footage, credited to cora.a.harris, shows the spaceplane.
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Did you know? The Mark II Aurora is a suborbital spaceplane developed by Dawn Aerospace, designed to achieve rapid, reusable access to space. This remotely piloted vehicle takes off and lands horizontally from conventional runways, aiming to reach altitudes above 100 kilometers, or 62 miles, the internationally recognized boundary of space. In March 2023, the Mark II Aurora successfully completed its first rocket-powered test flights over New Zealand's South Island, reaching speeds up to 196 miles per hour, or 315 kilometers per hour. NOW YOU KNOW!
Old-Timey Laundry: Before Automatic Washers, Laundry Went Through a Wringer
Wringer washers, sold by retailers such as Montgomery Ward in the early to mid-20th century, combined a tub agitated by a hand crank or electric motor with a wringer: two rollers that pressed water out of clothes before they were hung to dry. They were common in homes before automatic washers with spin cycles took over. The footage, credited to technology, shows a vintage wringer washer.
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Did you know? The Montgomery Ward wringer washer was a popular manual or semi-automatic washing machine sold in the early to mid-20th century, designed for home laundry before the rise of modern automatic washers. These machines featured a large tub for washing clothes, often powered by a hand crank or an electric motor, and a wringer mechanism with two rollers to squeeze excess water from fabric before drying. NOW YOU KNOW!
Huangluo Village: Red Yao Women in Huangluo Grow Hair Longer Than They Are Tall
In Huangluo village, in Longsheng County in China's Guangxi region, women of the Red Yao, a branch of the Yao people, are known for very long hair, often more than 1.7 meters (5.5 feet), the Reel says. They traditionally wash it with fermented rice water, credited locally with keeping it strong, shiny and dark into old age, and long hair is linked with prosperity and longevity. The village draws many tourists. The footage, credited to guilinchina, shows Red Yao women with their long hair.
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Did you know, the Yao women of Huangluo village in China's Guangxi province are renowned for their extraordinarily long hair, often exceeding 1.7 meters or 5.5 feet. As part of the red Yao ethnic group, they use fermented rice water to maintain their hair strength, shine, and deep black color well into old age. Their hair, considered a symbol of prosperity, longevity, and beauty, remains an integral part of their cultural identity, attracting visitors fascinated by their unique traditions and haircare secrets. NOW YOU KNOW!
The Price of Eggs: Male Chicks of Egg-Laying Breeds Are Usually Killed After Hatching
Chick culling is the killing of male chicks in the egg industry. Males of laying breeds cannot lay eggs and are not efficient meat birds compared with broilers, so they are considered uneconomical. Common methods include gassing and maceration; regulations vary by country, and some countries have banned the practice or are adopting in-ovo sexing to identify males before hatching. The footage, credited to fuck.animal.cruelty, shows chicks on a hatchery line.
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Did you know, chick culling is the practice of killing male chicks in the poultry industry, particularly in egg production, because they cannot lay eggs and are not bred for meat production. Since male chicks of egg-laying breeds do not grow efficiently for meat like broiler chickens, they are considered economically unviable. Common culling methods include gassing, maceration or grinding, and cervical dislocation, all regulated for humane standards in many countries. NOW YOU KNOW!
Flame Whirls: Fire Can Spin Into a Whirling Column of Flame
Fire whirls, or fire tornadoes, form when intense heat drives rising air that begins to rotate, often helped by wind shear or terrain, creating a spinning column of flame and hot gas. They can reach over 1,000 °C (1,800 °F), move unpredictably and spread embers. The footage, credited to extremenature, shows a fire whirl over burning ground.
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Fire tornadoes [...] where rising heat [...] creates a spinning [...] hot air [...] begins rotating, [...] reach over 1,000 °C [...] or 1,800 °F, [...] unpredictably, [...] NOW YOU KNOW!
Going Up?: A Space Elevator Would Run a Cable From Earth's Equator to Beyond Geostationary Orbit
A space elevator is a theoretical structure carrying cargo and people to space on a cable anchored at the equator and extending past geostationary orbit, about 35,786 km (22,236 miles) up, to a counterweight. Earth's rotation keeps the cable in tension, with the outward centrifugal effect balancing gravity. No known material is yet strong enough to build one. The footage, credited to tradzak, shows an animated ride up the cable.
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[...] is a theoretical [...] and people [...] cable anchored [...] geostationary orbit, [...] 22,236 mi. up. [...] The concept relies [...] centrifugal force, [...] NOW YOU KNOW!
Death Foam: Firefighting Foam Is Used to Cull Poultry in Bird Flu Outbreaks
When highly pathogenic avian influenza or virulent Newcastle disease hits a commercial flock, U.S. policy aims to kill the infected birds on the farm within 24 to 48 hours to stop the virus spreading. Water-based foam was developed for this after the 2004 Delmarva bird flu outbreak, and USDA and the AVMA gave it conditional approval in 2006. Firefighting-style foam is spread over floor-reared birds (broilers, turkeys, ducks) until it blocks their airways, causing physical hypoxia. In trials it killed broilers about as fast as CO2 or faster, with far fewer workers exposed to the virus. The AVMA has never classed it as euthanasia. In its 2026 depopulation guidelines, water-based foam is Tier 2, 'permitted in constrained circumstances', ranked below whole-house gassing and nitrogen-filled high-expansion foam.
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DID YOU KNOW? Foam depopulation is a method used in mass culling of poultry and livestock, primarily during disease outbreaks like avian influenza. It involves flooding an enclosed area with high expansion firefighting foam, which suffocates animals by blocking their airways, leading to rapid asphyxiation. The method is considered efficient, cost effective, and less labor intensive than traditional culling techniques like gassing or manual euthanasia. NOW YOU KNOW!
Shifty Periphery: You Often Notice Movement Out of the Corner of Your Eye First
Peripheral vision is especially good at detecting motion. The outer retina has a higher share of rod cells, which are very sensitive to light changes and movement, while the central fovea is packed with cones for detail and color. Motion in the wide visual field helps the brain detect movement, keep balance and judge speed, the Reel says. The footage, credited to howeverythingworks, shows a motion illusion.
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Did you know, objects in the periphery of vision play a crucial role in motion perception, helping the brain detect movement, maintain balance, and gauge speed? The peripheral retina is more sensitive to motion than the central retina, as it contains a higher concentration of rod cells, which excel at detecting changes in light and movement. This sensitivity allows the brain to process motion more effectively in the wider visual field, even when not directly focused on an object. NOW YOU KNOW!
Cycle Country: The Netherlands Has About 35,000 km of Dedicated Bike Paths
The Netherlands is known for cycling infrastructure, with about 35,000 kilometers (21,700 miles) of dedicated cycle paths. Dutch cities use separated bike lanes, protected intersections, cyclist traffic signals, bike-friendly roundabouts, dedicated bridges and large underground bike parking, which encourage everyday cycling and reduce congestion and emissions. The footage, credited to eurekahnb, shows a bicycle parking structure.
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Did you know? The Netherlands is renowned for its world-class bicycle infrastructure, with over 35,000 kilometers or 21,700 miles of dedicated bike paths, making cycling the primary mode of transport for many citizens. Dutch cities prioritize safe, separated bike lanes, protected intersections, and traffic signals designed specifically for cyclists. Features like bike-friendly roundabouts, dedicated bridges, and underground parking facilities encourage widespread cycling or reducing traffic congestion and emissions. NOW YOU KNOW!
The Space Perspective: Space Perspective Planned to Lift Tourists to 100,000 Feet by Balloon
Space Perspective, a Florida company, developed Spaceship Neptune, a pressurized capsule lifted by a hydrogen balloon to about 100,000 feet (30 km), where passengers would see Earth's curvature without rocket G-forces; a trip was planned to last about six hours, at $125,000 a seat. An uncrewed test flight reached that altitude in September 2024. When this Reel was posted, the company had furloughed most staff; it was evicted from its Titusville base in March 2025 and acquired by Spain's Eos X Space in July 2025. The footage, credited to TheSpacePerspective, shows the balloon launch.
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Did you know? Space Perspective is a carbon neutral space tourism company offering a luxury spaceflight experience aboard the Neptune Space Balloon, a high-tech capsule lifted by a massive hydrogen-filled balloon. Unlike traditional rocket launches, this gentle ascent to 100,000 feet or 30 kilometers allows passengers to experience the curvature of the Earth and the blackness of space without the effects of zero gravity or extreme G-forces, providing a high-end, slow-paced experience lasting about 6 hours. NOW YOU KNOW!
Fire Ball: In Space, a Candle Flame Becomes a Dim Blue Sphere
On Earth, hot gases rise and draw in fresh air, giving flames their familiar teardrop shape. In microgravity there is no buoyant convection, so oxygen reaches the flame only by diffusion and the flame spreads equally in all directions, forming a sphere that is often dimmer and bluer. The footage, credited to galaxies, shows combustion experiments in orbit.
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[...] of gravity [...] familiar teardrop [...] conditions hot air [...] and giving flames [...] there is no [...] in all directions [...] Without gravity [...] leading to [...] process. NOW YOU KNOW!
Sea Dragon: Sea Dragon Would Have Launched From the Ocean, Floating Upright
Sea Dragon was a 1962 concept for a huge two-stage rocket designed by Robert Truax at Aerojet. It would be built cheaply in a shipyard, towed to sea, ballasted upright and launched from the water, avoiding a launch pad. The first stage burned RP-1 and liquid oxygen, the second liquid hydrogen and oxygen, and it was meant to lift about 550 tonnes to low Earth orbit. It was never built. The footage, credited to newspaceenterprise, shows an animation of the launch.
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[...] a conceptual heavy [...] 1960s by Aerojet [...] capable of carrying [...] Unlike traditional [...] ocean launch, [...] two-stage [...] or RP-1/LOX, [...] NOW YOU KNOW!
The Plunge: Young Penguins Gather at the Ice Edge Before Their First Swim
When young penguins first go to sea, they gather at the water's edge and hesitate, partly because predators such as leopard seals and orcas may be waiting. Once one jumps, others quickly follow, and safety in numbers lowers each bird's risk, the Reel says, citing emperor penguins as an example. The footage, credited to natgeomagarab, shows a crowd of penguins at the edge of the ice.
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Did you know, young penguins face a critical moment of survival when they first jump into the ocean, transitioning from land-based chicks to fully aquatic hunters. Species like the emperor penguin gather in groups at the ice edge, hesitating before taking the plunge. This hesitation is often due to the presence of predators like leopard seals or orcas, as well as the uncertainty of their swimming abilities. Once one penguin jumps, the rest quickly follow, relying on safety and numbers to reduce individual predation risk. NOW YOU KNOW!
Project Orion: Project Orion Proposed Pushing a Spacecraft With a Series of Nuclear Blasts
Project Orion was a U.S. study from 1958 to 1965, led at General Atomics, of nuclear pulse propulsion: small nuclear explosions behind a spacecraft would strike a large pusher plate whose shock absorbers smoothed the thrust. It promised performance far beyond chemical rockets, with trips to Mars in weeks, but ended after the 1963 Partial Test Ban Treaty barred nuclear explosions in the atmosphere and space. The footage, credited to spaceman.in, shows an animated Orion craft.
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Project Orion was [...] 1950s and 1960s [...] space travel. [...] nuclear explosions, [...] absorbing [...] promised [...] far beyond [...] Mars in weeks [...] NOW YOU KNOW!
Disk Jets: Matter Swirling Into a Black Hole Heats up Through Friction
Gas and even shredded stars spiraling toward a black hole form an accretion disk that heats through friction and glows. Magnetic fields threading the disk can launch relativistic jets, beams of particles accelerated to nearly the speed of light, perpendicular to the disk. The footage, credited to galaxies, shows an animation of an accretion disk and jets.
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For black holes [...] entire stars spiral [...] through friction [...] fed by [...] from a [...] also produce [...] accelerated to [...] the disk, [...] NOW YOU KNOW!
Retarred Roads: Resurfacing Lays a Fresh Asphalt Layer Over the Old Road
Road resurfacing (re-tarring, as the title puts it) restores pavement by adding a new asphalt layer. Crews assess cracks and potholes, clean and repair the surface, spray a tack coat so the layers bond, then lay hot mix asphalt with a paving machine and compact it with rollers to the right density and smoothness. The footage, credited to techniquebuildings, shows a paver laying asphalt.
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Did you know, re-tarring roads, commonly referred to as road resurfacing, involves applying a new layer of asphalt to restore roadway surface integrity and extend its lifespan. The process begins with a thorough assessment of the existing pavement to identify areas of distress such as cracks or potholes. Preparation includes cleaning the surface and addressing any structural issues to ensure proper adhesion of the new layer. Tack coat is then applied to promote bonding between the old and new asphalt layers. Subsequently, a fresh layer of hot mix asphalt is laid using paving machinery, followed by compaction, to achieve the desired density and smoothness. NOW YOU KNOW!
Air Condor: Condors Can Soar for Hours With Barely a Wingbeat
Andean and California condors have wingspans of up to about 3 meters (10 feet). They ride thermals, columns of warm air rising from sun-heated ground and slopes, and ridge lift along mountains, gliding long distances with little energy while searching for carrion. The footage, credited to webnectarphoto, shows a condor soaring over mountains.
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Did you know? Condors, such as the Andean and California condors, are masters of mountain flight, using their massive wingspans, reaching up to 10 feet, to soar effortlessly over rugged terrain. These birds rely on thermal updrafts, warm air rising from the sun-heated slopes, to glide with minimal energy expenditure. This allows them to cover vast distances while searching for carrion, their primary food source. NOW YOU KNOW!
Lens Crafter: Many Contact Lenses Are Cast in Molds; Custom Ones Are Cut on a Lathe
Contact lenses are made by cast molding, spin casting or lathe cutting; the Reel also mentions 3D printing. Rigid gas permeable (RGP) and custom lenses are often lathed from a solid disc to precise curvatures. Soft lenses are then hydrated, and all lenses are polished, inspected, sterilized and packaged in saline. The footage, credited to DamnThatsInteresting, shows lenses being machined.
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Did you know? Contact lenses are manufactured using high-precision processes like cast molding, lathing, or 3D printing to ensure comfort and clarity, rigid gas permeable or RGP, and custom lenses are often lathed, where a solid disc is shaved with a computerized lathe to achieve precise curvature. After shaping, lenses undergo hydration, polishing, and quality testing to ensure optical accuracy and safety. They are then sterilized, packaged in a saline solution, and distributed. NOW YOU KNOW!
Frozen Gators: Alligators Can Poke Their Snouts Through Ice to Breathe
When temperatures drop, American alligators (Alligator mississippiensis) enter brumation, a reptile dormancy in which metabolism slows sharply. In freezing water they may keep their nostrils above the surface as ice forms, letting them breathe while the rest of the body stays submerged and almost motionless. The footage, credited to AmazingNature, shows an alligator lying in icy water.
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Alligators survive [...] called brumation, [...] When temperatures [...] metabolism to [...] survival technique [...] where they keep [...] remain submerged. [...] almost motionless [...] NOW YOU KNOW!
Why So Sirius?: Sirius, the Brightest Star in the Night Sky, Is Actually Two Stars
Sirius, also called the Dog Star in the constellation Canis Major, is the brightest star in the night sky, about 8.6 light-years away. It is a binary: Sirius A, a hot main-sequence star, and Sirius B, a white dwarf that was once a more massive, more luminous star before shedding its outer layers and collapsing. The footage, credited to galaxies, shows a twinkling star through a telescope.
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[...] also known [...] and part of [...] 8.6 light years [...] of Sirius A, [...] and Sirius B, [...] before collapsing. [...] more luminous [...] NOW YOU KNOW!
The Cities of Tomorrow: Smart Cities Use Sensors and Data to Run Traffic, Power and Services
Smart cities use connected sensors (the Internet of Things), data analytics, artificial intelligence and automation to manage infrastructure, transportation, energy and public services. Examples include adaptive traffic signals, automated waste collection, energy-efficient buildings and transit that adjusts to demand. The footage, credited to Real Image Production, shows a futuristic city.
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Did you know? Smart cities use advanced technology, data analytics, and the Internet of Things, or IoT, to enhance urban living, improve efficiency, and optimize resources. These cities integrate real-time data collection, artificial intelligence, and automation to manage infrastructure, transportation, energy, and public services more effectively. Features include smart traffic lights that reduce congestion, automated waste management, energy-efficient buildings, and connected public transportation systems that adapt to demand. NOW YOU KNOW!
On ICE: ICE Was Created in 2003 After the INS Was Dissolved
U.S. Immigration and Customs Enforcement (ICE) is a federal agency within the Department of Homeland Security, created in 2003 after the Immigration and Naturalization Service (INS) was dissolved. Its main divisions are Enforcement and Removal Operations, which handles immigration enforcement, and Homeland Security Investigations. The Reel was posted in February 2025, when ICE enforcement was prominent in U.S. news. The footage, credited to WGN News, shows ICE officers during an operation.
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Immigration and [...] federal agency [...] enforcing [...] and maintaining [...] after the dissolution [...] Service or INS, [...] Enforcement and [...] Investigations. NOW YOU KNOW!
MAiD: Some Countries Let Eligible Patients Get Medical Help to End Their Lives
Medical assistance in dying (MAiD) is legal in several jurisdictions, including Canada, Belgium and the Netherlands, and some U.S. states, where it is usually limited to terminally ill adults. A physician or nurse practitioner administers or prescribes medication under strict legal criteria, such as a grievous and irremediable condition, intolerable suffering and informed consent. Laws and eligibility differ widely and remain debated.
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Did you know? MAiD, or medical assistance in dying, is a legal process in certain countries, including Canada, Belgium, the Netherlands, and parts of the US, allowing terminally ill or suffering individuals to receive medical aid to end their lives. The procedure typically involves a physician or nurse practitioner administering or prescribing a lethal dose of medication under strict legal and ethical guidelines. Patients must meet specific criteria, such as having a grievous and irremediable medical condition, experiencing intolerable suffering, and demonstrating informed consent. NOW YOU KNOW!
The Gulf: The Gulf Covers About 615,000 Square Miles
The Gulf of Mexico is an ocean basin bordered by the United States, Mexico and Cuba, covering about 615,000 square miles (1.6 million km2). It holds major oil and gas reserves and supports fisheries and diverse ecosystems. The Reel was posted in February 2025, shortly after a U.S. executive order directed federal use of the name Gulf of America; the name Gulf of Mexico remains in international use. The footage, credited to 30A, shows beaches and turquoise water.
Transcript
[...] of Mexico [...] ocean basin [...] Mexico, and Cuba. [...] or 615,000 [...] of the world's [...] energy production, [...] rich oil and [...] the U.S. and [...] ecosystems [...] NOW YOU KNOW!
Levels to This: Automated Garages Stack Cars With Lifts Instead of Ramps
Automated parking systems move cars with mechanical lifts, shuttles or robotic platforms and stack them on multiple levels. With no ramps or driving lanes, they fit more vehicles into a smaller footprint, which suits dense cities. The footage, credited to Sharing Travel, shows cars being lifted into a parking tower.
Transcript
Did you know? Vertical parking lots, also known as automated parking systems or APS, maximize space efficiency by using mechanical lifts or robotic platforms to stack vehicles in multi-level structures. Unlike traditional garages, these systems eliminate the need for ramps and large driving lanes, allowing more cars to fit in a smaller footprint, making them ideal for dense urban areas. NOW YOU KNOW!
Bismuth Bound: Bismuth Pushes Back Against Magnets
Bismuth is one of the most strongly diamagnetic elements: it creates a weak magnetic field opposing an applied one. Placed near a strong neodymium magnet, pieces of bismuth can make a small magnet float stably between them, a form of diamagnetic levitation. The footage, credited to dydt, shows a small magnet hovering between iridescent bismuth crystals.
Transcript
Magnetic levitation [...] where bismuth [...] As one of [...] oppose an external [...] when paired with [...] neodymium magnet [...] float due to [...] NOW YOU KNOW!
H-1B Visas: The H-1B Lets U.S. Employers Hire Foreign Professionals
The H-1B is a U.S. nonimmigrant visa for workers in specialty occupations such as technology, engineering, finance and healthcare. An employer sponsors the worker; the visa is usually granted for three years and can be extended to six. Applicants generally need at least a bachelor's degree or equivalent. The annual cap is 85,000: 65,000 regular and 20,000 for holders of U.S. master's or higher degrees. The program was the subject of public debate when this Reel was posted in February 2025.
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Did you know H-1B visas are non-immigrant work visas that allow U.S. companies to hire foreign professionals in specialized fields such as technology, engineering, finance, and healthcare. Sponsored by an employer, the visa is typically granted for three years, with an option to extend up to six years. To qualify, applicants must have at least a bachelor's degree or equivalent experience in their fields, and employers must demonstrate that the position requires specialized skills. The program is capped annually at 85,000 visas, with 65,000 for general applicants and 20,000 for those with U.S. master's degrees or higher. NOW YOU KNOW!
DEI: DEI Stands for Diversity, Equity and Inclusion
Diversity, equity and inclusion (DEI) refers to organizational policies and programs. As the Reel defines them, diversity concerns representation across groups such as race, age and background; equity concerns fair treatment and access to resources; and inclusion concerns a culture where people feel welcome and able to contribute. DEI programs have been the subject of political and legal debate in the United States, including in early 2025 when this Reel was posted. The footage, credited to Apple, shows people in an office.
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Did you know, DEI, or Diversity, Equity, and Inclusion, refers to initiatives and policies aimed at fostering diverse workplaces, ensuring fair opportunities, and creating inclusive environments where all individuals feel valued. Diversity focuses on representation across various demographics, such as race, age, and background, while equity ensures fair treatment and access to resources, addressing systemic barriers that may disadvantage certain groups. Inclusion emphasizes creating a culture where diverse individuals feel welcome, respected, and empowered to contribute. NOW YOU KNOW!
Executive Orders: Executive Orders Let a U.S. President Direct Federal Agencies Without Congress
An executive order is a directive from the U.S. president that manages operations of the federal government. It does not need congressional approval but must rest on the Constitution or existing law. Orders can be challenged in court, blocked by Congress through legislation, or revoked by later presidents. This Reel was posted in February 2025, during a period of numerous new executive orders. The footage, credited to C-SPAN, shows a president signing orders.
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Did you know? Executive orders are legally binding directives issued by the President of the United States to manage operations within the federal government. They do not require approval from Congress, but must align with existing laws and the Constitution, used to implement policies, direct agencies, or clarify legislation. Executive orders can address issues such as national security, immigration, and economic regulations. While they allow swift action, executive orders can be challenged in courts or overturned by future presidents, making them a powerful but temporary tool of governance. NOW YOU KNOW!
Black Hawk: The UH-60 Black Hawk Entered U.S. Army Service in 1979
The Sikorsky UH-60 Black Hawk is a four-blade, twin-engine, medium-lift utility helicopter introduced by the U.S. Army in 1979 and used by many allied forces. Roles include troop transport, medical evacuation, air assault and logistics. This Reel was posted a week after a U.S. Army Black Hawk collided with an American Eagle airliner over the Potomac River near Washington, D.C., on January 29, 2025. The footage shows a Black Hawk in flight.
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Did you know, Black Hawk helicopters, officially known as the Sikorsky UH-60 Black Hawk, are multi-role utility helicopters used primarily by the U.S. military and allied forces worldwide. Introduced in 1979, they are designed for troop transport, medical evacuation, combat assault, and logistical support with advanced avionics, armor, and survivability features. NOW YOU KNOW!
Bubble Blowing: Underwater Bubble Rings Can Merge, Bounce or Break Apart
A bubble ring is a vortex ring of rotating water with air trapped in its core. When two collide, their vortices interact: head-on rings may briefly merge before breaking into smaller bubbles, while angled collisions can twist, reconnect or pass through each other, the Reel says. Outcomes depend on speed, rotation and angle. The footage, credited to astronomy.views, shows divers' bubble rings meeting underwater.
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Did you know, when bubble rings collide underwater, their vortex structures interact in complex ways, leading to merging, bouncing, or breaking apart. These rings are rotating loops of water with trapped air, and their behavior upon collision depends on factors like speed, rotation, and angle. If two rings meet head-on, they may temporarily merge before destabilizing into smaller bubbles. When they collide at an angle, they can twist and pass through each other due to the conservation of momentum. NOW YOU KNOW!
Capsule Core: Each Sprinkler Head Is Held Shut by a Tiny Glass Bulb
Most automatic fire sprinkler heads are held closed by a glass bulb filled with a heat-sensitive liquid, or by a fusible metal link. When the surrounding air reaches the rated temperature, typically around 57-74 °C (135-165 °F), the liquid expands and shatters the bulb, or the link melts, releasing water only from the heads that are hot. The footage, credited to xplainingtheworld, shows a red sprinkler bulb bursting and water spraying.
Transcript
[...] fire sprinklers [...] or fusible element [...] high temperatures. [...] typically around [...] or 57°C - 74°C, [...] the glass capsule [...] link melts. [...] water to spray [...] NOW YOU KNOW!
Kestrel Stability: A Hovering Kestrel Can Keep Its Head Almost Perfectly Still
Kestrels are small falcons famous for hovering while hunting. According to the Reel, falcons get their flight stability from long, pointed wings that reduce drag for fast dives and precise maneuvers, a tail that acts like a rudder, stiff primary feathers for stability at speed and softer secondary feathers for lift. The footage, credited to lawrencechatton, shows a kestrel in flight.
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Did you know, Falcons achieve exceptional flight stability through a combination of aerodynamic wing design, tail control and instinctive adaptations, their long pointed wings minimize drag, allowing for high-speed dives and precise maneuvering, while their tail acts as a rudder to maintain balance during turns. Stiff primary feathers provide stability at high speeds, while softer secondary feathers help with lift and gliding. NOW YOU KNOW!
Flame Control: Firefighters Sometimes Set Fires on Purpose
Controlled or prescribed burns are fires set deliberately and carefully managed by trained crews. They clear dead vegetation and underbrush, restore fire-adapted ecosystems and reduce the fuel that drives severe wildfires. The footage, credited to curioXities (partly legible), shows a thin line of fire creeping across a park lawn under trees.
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Controlled burns [...] set and carefully [...] restore ecosystems, [...] trained fire [...] underbrush, and [...] wildfires. [...] controlled burns [...] growth of fire [...] NOW YOU KNOW!
Praise the Sun!: The Sun Blows a Bubble Around the Whole Solar System
The heliosphere is the vast bubble of solar wind, the stream of charged particles emitted by the Sun, that extends outward past the planets until it meets the interstellar medium at the heliopause. It deflects much of the galactic cosmic radiation that would otherwise reach the inner solar system. The footage, credited to thegalacticvoid, shows an animation of the heliosphere.
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[...] heliosphere is [...] solar system, [...] emitted by [...] outward, creating [...] where it meets [...] deflecting cosmic [...] otherwise [...] NOW YOU KNOW!
Go for a Spin: SpinLaunch Wants to Fling Payloads Toward Space With a Giant Centrifuge
SpinLaunch is a U.S. company developing a kinetic launch system: a vacuum-sealed centrifuge spins a payload on an arm to hypersonic speed and releases it upward, aiming to cut fuel use and cost. A small rocket stage would still be needed to reach orbit. It has run suborbital test flights from a smaller accelerator in New Mexico. The footage, credited to SpinLaunch, shows a test launch.
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Did you know? Spin Launch is an innovative space launch company developing a kinetic launch system designed to send payloads into orbit using a massive rotating centrifuge instead of traditional rocket propulsion. The system works by accelerating a payload inside a vacuum-sealed chamber using a high-speed spinning arm before releasing it at hypersonic speeds, significantly reducing the need for fuel and cutting launch costs. NOW YOU KNOW!
One World Trade Center: One World Trade Center Stands 1,776 Feet Tall
One World Trade Center in Lower Manhattan is the tallest building in the Western Hemisphere, reaching a symbolic 1,776 feet (541 meters) including its spire, a nod to 1776. It is the main building of the rebuilt World Trade Center complex after the original Twin Towers were destroyed on September 11, 2001. Its structure was completed in 2013 and it opened in November 2014. The footage, credited to EarthCam, shows the tower from the air.
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Did you know, One World Trade Center, also known as the Freedom Tower, is the tallest building in the Western Hemisphere, standing at a symbolic height of 1,776 feet, or 541 meters, to represent the year of American independence. Located in Lower Manhattan, New York City, it was completed in 2013 as the centerpiece of the Rebuild World Trade Center Complex, following the destruction of the original Twin Towers on September 11th, 2001. NOW YOU KNOW!
Flamboyant Fish: Flamboyant Cuttlefish Hatch Fully Formed and Already Colorful
The flamboyant cuttlefish (Metasepia pfefferi) is a small Indo-Pacific cephalopod, not a fish. Its hatchlings emerge from translucent eggs as tiny, fully formed miniatures of the adults and can show vibrant coloration soon after. Adults flash purple, yellow and red warning colors as they walk along the seafloor. The footage, credited to science, shows hatchlings leaving their eggs.
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[...] cuttlefish [...] tiny, fully-formed [...] These hatchlings [...] emerge from [...] vibrant coloration [...] cuttlefish [...] until it is [...] NOW YOU KNOW!
In Remembrance: Soviet Troops Liberated Auschwitz on January 27, 1945
Auschwitz was the largest Nazi German concentration and extermination camp, near Oświęcim in German-occupied Poland. It comprised Auschwitz I, the main camp; Auschwitz II-Birkenau, the main extermination site; and Auschwitz III-Monowitz, a labor camp serving industrial plants. Opened in 1940, it was a central site of the Holocaust, where about 1.1 million people, mostly Jews, were killed. It was liberated on January 27, 1945, and this Reel was posted on the 80th anniversary, International Holocaust Remembrance Day. The footage, credited to auschwitzmemorial, shows the camp today.
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Did you know Auschwitz was the largest and most infamous Nazi concentration and extermination camp during World War II, located near the town of Oświęcim. In German-occupied Poland, it was a complex of camps, including Auschwitz I, a labor and administrative camp to Birkenau, the main extermination site, and Auschwitz III, Monowitz, a labor camp supporting nearby industrial plants. Opened in 1940, Auschwitz became a central site for the Holocaust, where over 1.1 million people, primarily Jews, were systematically murdered in gas chambers or through forced labor, starvation, and disease. NOW YOU KNOW!
Layer by Layer: Ice Sheets Can Build up in Visible Layers
On frozen lakes, ice thickens in layers as cold spells come and go; temperature swings, wind and pressure crack and stack the sheets into ridges and shards. The Reel's captions describe ice sheets formed from layers of ice in cold temperatures, varying with the intensity of temperature fluctuations. The footage, credited to all.litvinova, shows layered, broken ice on a frozen lake.
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Ice sheets formed [...] of ice [...] cold temperatures. [...] ranging from [...] and intensity of [...] structure of the [...] fluctuations, [...] NOW YOU KNOW!
The Backbone of Modern Electronics: Every Chip Starts as a Polished Slice of Silicon
Integrated circuits are built on silicon wafers. In photolithography, a wafer is coated with a light-sensitive photoresist and exposed to ultraviolet light through a mask, transferring the circuit pattern; etching then removes unwanted material. The process repeats layer by layer before chips are tested and packaged. The footage shows wafers and chip close-ups.
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Computer chips, also known as integrated circuits, are at the heart of modern electronics, powering everything from smartphones to supercomputers. The production of computer chips begins with the design and fabrication of a silicone wafer, which serves as the foundation for the chip. The silicone wafer is then coated with a photosensitive material and exposed to ultraviolet light through a mask, creating a pattern on the wafer. This pattern defines the circuitry of the chip. The wafer is then etched to remove the unwanted material, leaving behind the desired circuitry. The chips are then tested, packaged, and ready for use in electronic devices, with the demand for faster, more powerful, and energy-efficient chips on the rise. The semiconductor industry continues to innovate, driving advancements in technology and shaping the future of electronics. NOW YOU KNOW!
How Water Freezes: Freezing Water Locks Into a Six-Sided Lattice
As water cools below 0 °C (32 °F), hydrogen bonds lock each molecule to four neighbors in a hexagonal lattice. The open, spacious structure makes ice less dense than liquid water, so it floats, and causes water to expand as it freezes. The footage shows an animation of molecules linking into a honeycomb lattice.
Transcript
Did you know water molecules align to form ice through a crystallization process where they arrange into a hexagonal lattice structure as temperatures drop below 0 degrees Celsius or 32 degrees Fahrenheit. This alignment occurs due to hydrogen bonding where each water molecule connects to four others creating a repeating and spacious pattern. The hexagonal structure results in ice being less dense than liquid water allowing it to float. This unique molecular arrangement not only explains ice's buoyancy but also contributes to its ability to expand as it freezes. NOW YOU KNOW!
Immune to Cold: A Husky's Undercoat Traps Warm Air Next to Its Skin
Siberian Huskies tolerate cold through a double coat of water-repelling guard hairs and an insulating undercoat, furred paws with tough pads, and a countercurrent heat exchange that warms blood returning from the limbs, according to the Reel. The footage shows huskies in deep snow.
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Did you know, Huskies are remarkably resilient to cold due to their thick double coat, efficient metabolism, and unique physiological adaptations. Their outer coat or guard hairs repels water and snow while the dense undercoat provides insulation by trapping warm air close to the skin. Huskies also have fur-covered paws with special pads that resist freezing and provide traction on icy surfaces. Their circulatory system helps retain heat using a countercurrent exchange mechanism to warm blood returning from extremities. NOW YOU KNOW!
Little Birch Dance: Beryozka Dancers Seem to Float Across the Stage
Beryozka (also spelled Berezka, Russian for little birch) is a Russian dance troupe of female dancers founded in 1948 by choreographer Nadezhda Nadezhdina. Its signature routines use tiny, rapid steps hidden beneath floor-length skirts so the dancers appear to glide, an effect inspired by birch trees. The footage, credited to Sarahh, shows dancers gliding in formation.
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Did you know the Berezka Dance is a traditional Russian folk dance renowned for its mesmerizing, gliding movements that create the illusion of dancers floating across the stage. Performed by the Berezka Ensemble, founded in 1948, the dance is inspired by the grace of birch trees, as Berezka means little birch in Russian. Dancers wear long, flowing skirts that enhance the illusion of seamless motion. They execute a unique technique involving small, quick steps giving the impression of effortless, weightless movement. NOW YOU KNOW!
Face Creator: The Human Face Starts as Separate Pieces That Grow Together
Facial development begins around the fourth week of pregnancy, when neural crest cells migrate into the head region. The face starts as five tissue swellings, the facial prominences, that grow toward each other and fuse. Between weeks six and eight the nose, mouth and eyes take shape, and the palate forms from two shelves that grow inward and join at the midline. The footage, credited to DamnThatsInteresting, shows an animation of the face forming.
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Did you know, the development of the human face in the womb is a complex process that begins in the early weeks of gestation and is largely complete by the end of the first trimester. Around the fourth week of pregnancy, neural crest cells migrate to form the structures that will shape the face. Initially, the face consists of five distinct tissue segments. As these segments grow, they move closer together and begin to fuse. By weeks six to eight, the basic shape of the nose, mouth, and eyes starts to emerge. The nasal cavities deepen and the palate or roof of the mouth forms from two plates that grow inward and join in the center. NOW YOU KNOW!
Black Hole Binary: When Galaxies Collide, Their Central Black Holes Can End up Orbiting Each Other
A supermassive black hole binary forms after two galaxies merge and their central black holes sink toward the middle and orbit each other. They spiral closer through interactions with surrounding stars and gas and, finally, by emitting gravitational waves, before merging into one more massive black hole. The footage, credited to astropodis, shows a simulation of two black holes orbiting.
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Did you know, binary supermassive black hole systems consist of two supermassive black holes orbiting each other, typically found at the centers of merging galaxies. These systems form when two galaxies collide, bringing their central black holes into close proximity, as the black holes spiral closer due to gravitational interactions, and the loss of energy through the emission of gravitational waves, they eventually merge into a single, even more massive black hole. NOW YOU KNOW!
Canadian Super Scooper: The CL-415 Skims a Lake to Refill Its Tanks in Seconds
The Canadair CL-415, nicknamed the Super Scooper, is an amphibious firefighting aircraft built by Canadair and later Bombardier. It scoops about 6,137 liters (1,621 U.S. gallons) of water while skimming a lake and can mix it with foam concentrate before a drop. The program later passed to Viking Air, now De Havilland Canada. The footage, credited to dailysci3nce, shows the plane scooping and dropping water.
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Did you know the Canadian CL-415 Super Scooper is a specialized amphibious aircraft designed for aerial firefighting developed by Bombardier and now produced by Viking Air. The CL-415 can scoop up to 6140 liters or 1,621 gallons. It can mix the water with fire retardant before dropping it on wildfires. NOW YOU KNOW!
Art Is an Explosion: In 2006, Sony Blew 70,000 Liters of Paint Over a Glasgow Tower Block
In 2006, Sony advertised its Bravia high-definition TVs with Paint, a commercial under the slogan Color Like No Other. It was filmed in the Toryglen area of Glasgow, Scotland, where about 70,000 liters of paint were blasted across a disused tower block, according to the Reel. The footage shows the colored explosions from the ad.
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Did you know, in 2006, Sony launched a visually striking advertisement for its Bravia line of high-definition televisions. Emphasizing the slogan, Color Like No Other, the commercial, titled Paint, was filmed in the Torigulan area of Glasgow, Scotland and involved detonating 70,000 liters of environmentally friendly paint across a disused tower block to create a vibrant explosion of colors. NOW YOU KNOW!
Video Trickery II: On Video, a Helicopter's Rotor Can Seem to Stand Still
A camera records a series of still frames at a set frame rate. If a helicopter's blades rotate by exactly one blade spacing, or a whole turn, between frames, each frame catches them in the same position and they appear frozen, a stroboscopic effect also called the wagon-wheel effect. Rolling shutter is a different effect that bends fast-moving blades. The footage shows a flying helicopter with apparently still rotors.
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Helicopter blades can appear stationary on camera [...] phenomenon called the rolling shutter effect, or frame rate synchronization. Cameras capture video by taking a series of still frames at a specific frame rate, typically measured in frames per second, or FPS. If the rotation speed of the helicopter blades matches [...] of the cameras frame rate, each frame may capture the blades in the same position, making them appear stationary. NOW YOU KNOW!
A Puzzle for Ants: No Single Ant Runs the Colony
Ant colonies solve problems such as finding food, building nests and moving large objects without a leader. Each ant follows simple rules and responds to pheromone trails, touch and local cues, and the colony's behavior emerges from these interactions, an example of swarm intelligence. Researchers have shown ant groups maneuvering loads through mazes more effectively than individuals. The footage shows ants working together to move an object through a puzzle.
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Did you know ants use collective thinking, often referred to as swarm intelligence, to solve problems and optimize tasks like foraging, nest building, and defense? This behavior arises from simple interactions among individual ants, guided by pheromone trails, touch, and environmental cues. This decentralized decision-making allows ants to adapt to changing conditions and solve complex problems, such as navigating obstacles or reallocating workers to critical tasks. NOW YOU KNOW!
Luminol Lux: Luminol Glows Blue When It Meets Traces of Blood
Luminol is a chemical used by forensic investigators to find traces of blood. Mixed with an oxidizer such as hydrogen peroxide, it reacts in the presence of the iron in hemoglobin, which acts as a catalyst, and gives off a blue glow, an example of chemiluminescence. Other substances such as bleach and some metals can cause false positives. The footage shows luminol glowing in the dark.
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Did you know, Luminol is a chemical compound widely used in forensic science for detecting trace amounts of blood at crime scenes when mixed with an oxidizing agent like hydrogen peroxide and exposed to iron and hemoglobin Luminol undergoes a chemical reaction called chemiluminescence, emitting a blue glow NOW YOU KNOW!
Just a Chill Dog: A Husky's Double Coat Traps Warm Air Against Its Skin
Siberian Huskies cope with cold thanks to a thick double coat: water- and snow-repelling guard hairs over a dense, insulating undercoat. Furred paws with tough pads resist freezing and grip ice, and a countercurrent heat exchange in the limbs warms blood returning from the extremities, according to the Reel. The footage, credited to hackingtheuniverse, shows a husky resting in snow.
Transcript
Did you know? Huskies are remarkably resilient to cold due to their thick double coat, efficient metabolism and unique physiological adaptations. Their outer coat or guard hairs repels water and snow while the dense undercoat provides insulation by trapping warm air close to the skin. Huskies also have fur-covered paws with special pads that resist freezing and provide traction on icy surfaces. Their circulatory system helps retain heat using a countercurrent exchange mechanism to warm blood returning from extremities. NOW YOU KNOW!
Burning Rubber: A Tire Pile Fire Can Smolder for Months
Tire fires are hard to extinguish because tires are made of flammable rubber, synthetic polymers and steel, and piles trap heat. They can smolder for days, weeks or months, releasing carbon monoxide, sulfur oxides, volatile organic compounds and heavy metals that pollute air, soil and water. The footage, credited to James Melville, shows a large tire pile burning.
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Did you know, burning tire piles are a significant environmental and safety hazard due to the large quantities of toxic smoke and pollutants they release. Tires are highly flammable and once ignited are difficult to extinguish due to their composition of rubber, synthetic polymers, and steel. The intense heat can cause fire to smolder for days, weeks, or even months. These fires release harmful chemicals like carbon monoxide, sulfur oxides, and volatile organic compounds or VOCs, as well as heavy metals which contaminate the air, soil, and water. NOW YOU KNOW!
Siphonophoria: A Siphonophore Is a Colony of Specialized Zooids Acting as One
Siphonophores (order Siphonophorae) are colonial hydrozoans made of specialized zooids that handle tasks like feeding, movement and reproduction while working together as one organism. The Portuguese man o' war is a well-known example, and some species reach great lengths. They capture prey with stinging cells called nematocysts. The footage, credited to seaclips.io, shows a siphonophore on the seafloor.
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Siphonophores are [...] of specialized [zooids ...] tasks like feeding, [...] zooids work [...] highly efficient [...] man o' war [...] lengths of up [...] Siphonophores [...] or nematocysts, [...] NOW YOU KNOW!
Alaska Airlines 261: On January 31, 2000, Alaska Airlines Flight 261 Crashed off California
On January 31, 2000, Alaska Airlines Flight 261, a McDonnell Douglas MD-83 flying from Puerto Vallarta, Mexico, toward San Francisco and Seattle, crashed into the Pacific Ocean near Anacapa Island, California, killing all 88 people on board. The NTSB found the horizontal stabilizer's jackscrew assembly failed because of insufficient lubrication and excessive wear. The footage, credited to planesanity, shows a reconstruction of the flight.
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Did you know Alaska Airlines Flight 261 was a tragic aviation accident that occurred on January 31, 2000 when a McDonnell Douglas MD-83 crashed into the Pacific Ocean near Anacapa Island, California resulting in fatalities for all 88 passengers and crew on board. NOW YOU KNOW!
Seeing Things Differently: Laser Eye Surgery Reshapes the Cornea to Fix Blurry Vision
Laser vision correction aims to reduce dependence on glasses or contacts by reshaping the cornea. The main procedures are LASIK (laser-assisted in situ keratomileusis), PRK (photorefractive keratectomy) and SMILE (small incision lenticule extraction). They treat refractive errors such as myopia, hyperopia and astigmatism. The footage, credited to life_withmedical, shows an eye during laser surgery.
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Did you know? Specs removal surgery, commonly referred to as laser vision correction surgery, is designed to reduce or eliminate dependence on eyeglasses or contact lenses. The most common procedures include LASIK or laser-assisted in situ keratomileusis, PRK or photorefractive keratectomy, and SMILE or small incision lenticule extraction. These surgeries reshape the cornea using advanced lasers to correct refractive errors such as myopia, hyperopia, or astigmatism. NOW YOU KNOW!
Freeloader Fish: Some Young Fish Hide Inside a Jellyfish's Bell
Juvenile trevally and some filefish shelter in or beneath jellyfish bells, using the stinging tentacles as a shield against predators and picking off food the jellyfish has caught or nibbling its tissue, the Reel says. It describes the relationship as commensalism, in which the fish benefit and the jellyfish is largely unaffected. The footage, credited to elevatedmoments.co, shows small fish swimming inside a jellyfish.
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Did you know certain fish such as juvenile trevally and some species of filefish are known to swim within the bells of jellyfish for protection and sustenance. These fish use the jellyfish's stinging tentacles as a shield against predators as they are often immune to the jellyfish's venom. Inside the bell, they are also able to scavenge small prey items caught by the jellyfish or feed on the jellyfish's tissue without causing significant harm. This relationship is an example of commensalism, with a fish benefit from the jellyfish's defense mechanisms, while the jellyfish is neither significantly helped nor harmed. NOW YOU KNOW!
Komodo: Komodo Dragons Can Swallow Large Prey Whole
Komodo dragons (Varanus komodoensis), the largest living lizards, have loosely jointed, flexible jaws, expandable throats and stretchy stomachs, so they can swallow large chunks or small prey whole, using head-tossing motions to force food down. Serrated teeth tear off pieces when prey is too large. They can eat up to about 80 percent of their body weight in a meal. The footage shows Komodo dragons feeding.
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Komodo dragons are capable of eating prey whole thanks [to] highly flexible jaws, expandable throats, and elastic stomachs. Their jaws [are connected] by ligaments that stretch, allowing them to open wide enough to swallow large prey items. Additionally, their sharp serrated teeth help tear off chunks of meat when the prey is too large to swallow whole. [Komodo] dragons use their powerful muscles to push [food down] their throats, assisted by a unique head tossing motion. Their stomachs [expand] significantly, enabling them to consume up to 80% of [their body] weight in a single meal. NOW YOU KNOW!
Proton-M: On July 2, 2013, a Proton-M Veered and Crashed Seconds After Liftoff
Proton-M is a Russian heavy-lift rocket. On July 2, 2013, one carrying three GLONASS navigation satellites veered off course right after liftoff from Baikonur and crashed; investigators found angular velocity sensors had been installed upside down. On May 16, 2015, another Proton-M failed during ascent and lost Mexico's MexSat-1 satellite. The footage shows the 2013 crash.
Transcript
Did you know the Proton-M, a Russian heavy-lift launch vehicle, has faced several significant failures over the years, notably the crash on July 2nd, 2013, when a rocket carrying three GLONAS navigation satellites lost control and exploded shortly after liftoff. Due to angular velocity sensors being installed upside down, another failure occurred on May 16th, 2015, when a Proton-M carrying a Mexican satellite failed after launch, marking another setback for Russia's space program. NOW YOU KNOW!
Rotary Wrecking: A Spinning Head Lowered Down a Chimney Can Smash Out Old Flue Tiles
Chimney sweeps and relining crews remove old clay flue tiles and mortar with rotary tools lowered down the flue on rods or cables. A motor spins chains or carbide- or diamond-tipped heads that break or grind away the liner, clearing room for a new one. The footage shows a rotary tool breaking tiles inside a chimney.
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Did you know? A rotary tile breaking tool for chimneys is a specialized device designed to efficiently remove tiles or flue liners from the interior of chimneys. It typically consists of a motorized rotary head equipped with durable, replaceable cutting or grinding attachments, such as tungsten carbide or diamond tip blades. The tool is lowered into the chimney using a cable or rod system, and the rotary motion breaks or grinds away the tiles or mortar without requiring extensive manual effort. NOW YOU KNOW!
Network Earth: Nearly All Intercontinental Internet Traffic Runs Through Undersea Cables
Submarine communications cables carry the vast majority of international data, the Reel says about 95 percent. Hair-thin optical fibers carry data as light, wrapped in layers of protection; near shore the cables add steel wire armor, while in the deep ocean they can be as thin as a garden hose. Repeaters boost the signal every several dozen kilometers. The footage shows cable being laid from a ship.
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Did you know, deep sea fiber optic cables are the backbone of global internet and telecommunications. Carrying approximately 95% of international data traffic, these cables, made of hair thin optical fibers, encased in protective layers, are laid along the ocean floor, often spanning thousands of kilometers. The fibers transmit data as light signals, enabling high speed communication across continents. To withstand harsh underwater conditions, the cables are sheathed in multiple protective layers, including steel wire armoring and waterproof coatings.. NOW YOU KNOW!
Root of the Problem: A Root Canal Removes Infected Pulp to Save a Tooth
Root canal treatment addresses infection or damage in a tooth's pulp, the soft tissue with nerves and blood vessels. A dentist removes the pulp, cleans, shapes and disinfects the canals, then fills and seals them, usually with a rubbery material called gutta-percha, and often adds a crown. It can save teeth that would otherwise be extracted. The footage shows an animation of the procedure.
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Did you know? A root canal is a dental procedure used to treat infection or damage inside a tooth's pulp, the soft tissue containing nerves and blood vessels. The procedure involves removing the infected or damaged pulp, cleaning and disinfecting the inner canals of the tooth, and then filling and sealing them with a biocompatible material. Root canals are typically performed to save teeth that might otherwise need extraction due to decay, trauma, or abscesses. NOW YOU KNOW!
Laser Rust Removal: A Pulsed Laser Can Vaporize Rust and Leave Bright Metal
Laser rust removal uses short, intense laser pulses to heat and ablate rust, paint and grime, which absorb the light more than the bare metal beneath. It is non-contact, precise and avoids solvents and abrasive blasting, and is used in restoration, aerospace and manufacturing. The footage, credited to vilalaserofficial, shows a laser cleaning rusty steel.
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Did you know? Laser rust removal is an advanced, non-contact method for cleaning rust and corrosion from metal surfaces. It uses high-powered laser beams to vaporize rust, leaving the underlying material intact. This process works through laser ablation, where the intense energy of the laser rapidly heats and removes the rust layer, without affecting the metal beneath. This technique is precise, efficient, and eco-friendly, as it eliminates the need for chemical solvents or abrasive methods. Laser rust removal is widely used in industries such as automotive restoration, aerospace, and manufacturing for tasks like surface preparation, part maintenance, and refurbishing delicate components. NOW YOU KNOW!
Full-Flow: In a Full-Flow Engine, All Fuel and Oxidizer Pass Through Preburners
Full-flow staged combustion is a rocket engine cycle in which all of the fuel and all of the oxidizer pass through separate preburners that drive the turbopumps, then enter the main combustion chamber as hot gases. Splitting the flow lets the turbines run cooler and supports high chamber pressures. SpaceX's Raptor was the first such engine to fly. The footage shows engine test firings.
Transcript
Full-flow rocket engines are an advanced type of liquid rocket engine that uses full-flow staged combustion, a design in which both the fuel and oxidizer [are] preburned in separate preburners before entering the main combustion chamber. [An] advantage of the full-flow design is that it reduces the temperature [of the] turbo pumps [...] fuel and oxidizer are already in gaseous form when they enter. This allows for higher engine pressures and performance without compromising durability. NOW YOU KNOW!
Gummi: A Gummy Bear Dropped Into Molten Potassium Chlorate Bursts Into Flame
When potassium chlorate is melted, it decomposes and releases oxygen. Dropping in a gummy bear, mostly sugar, sets off a violent, highly exothermic combustion with bright violet-tinged flames, heat and smoke. It is a classic chemistry demonstration done only with protective equipment. The footage shows a gummy bear burning in a test tube.
Transcript
Did you know the reaction between a gummy bear and potassium chlorate is a dramatic demonstration of a highly exothermic reaction? When potassium chlorate is heated, it decomposes to release oxygen gas, creating an intensely oxidizing environment. Introducing a gummy bear, which is primarily sugar, a carbohydrate, results in rapid combustion as the sugar reacts with the oxygen. This produces a burst of heat, light, and gas, often accompanied by a loud sizzling sound. NOW YOU KNOW!
FREEZING: Ice Floats Because Freezing Water Spreads Out Into an Open Lattice
When water cools below 0 °C (32 °F), its molecules lock into a hexagonal crystal lattice held by hydrogen bonds, each molecule bonded to four neighbors. The lattice is more open than liquid water, so ice is about 9 percent less dense and floats, and water expands as it freezes. The footage shows an animation of water molecules forming ice.
Transcript
Water molecules align to form ice [...] crystallization process where they arrange into a hexagonal lattice as temperatures drop below 0 °C or 32 °F. This alignment [is] due to hydrogen bonding, where each water molecule [bonds] to four others, creating a repeating and spacious pattern. The hexagonal structure results in ice being less dense than liquid water, [allowing] it to float. This unique molecular arrangement not only explains ice's buoyancy, [but also] contributes to its ability to expand as it freezes. NOW YOU KNOW!
Blood Beach: Iron Oxide Turns Some Persian Gulf Beaches Deep Red
Hormuz Island in Iran's part of the Persian Gulf is known for red soil and sand rich in iron oxide, mainly hematite, which washes onto its beaches and colors the surf red. Locals use the red earth, called gelak, in cooking and crafts. The footage shows the island's red soil and sand.
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Did you know, the red sand found on some Persian Gulf beaches, particularly in southern Iran, is a striking natural feature resulting from the region's unique geological composition. The reddish hue is primarily due to the presence of iron oxide in the sand, which gives it a vibrant rust-like color. The red sand not only enhances the aesthetic appeal of these beaches, but also reflects the diverse mineralogical makeup of the region. NOW YOU KNOW!
Painting Rubik: Rubik's Cubes Are Usually Colored With Stickers or Plastic Tiles, Not Paint
The Rubik's Cube, invented by Ernő Rubik in 1974, has 54 colored facets on its six faces. Classic cubes used colored vinyl stickers, which can peel and fade, while many modern cubes use tiles or stickerless colored plastic that lasts longer. The footage shows cubes being colored on a production line.
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Did you know? Rubik's cubes are not typically painted. Instead, their colored faces are created using stickers or plastic tiles. Early versions of the Rubik's Cube used adhesive vinyl stickers in six distinct colors, applied to each of the 54 square facets. These stickers could peel or fade over time, so modern Rubik's Cubes often feature colored plastic tiles that are more durable and integrated into the cube's design. NOW YOU KNOW!
OverGrowth UnderPass: Climbing Plants Can Turn Gray Overpasses Green
Cities cover concrete walls, pillars and underpasses with climbing plants, vertical gardens and green walls. Plants such as ivy and creeping fig tolerate shade and urban conditions, and the greenery can cool surfaces, trap dust and make infrastructure more pleasant. Some cities, such as Mexico City and Chengdu, have planted overpass pillars on a large scale. The footage shows overpasses covered in plants.
Transcript
Did you know growing vegetation over concrete and underpasses combines aesthetic appeal with environmental benefits? This practice involves using climbing plants, vertical gardens, or green walls to cover concrete surfaces, softening the harsh appearance of infrastructure. Species like ivy, creeping fig, or flowering climbers are commonly used for their resilience and ability to thrive in shaded or urban conditions. NOW YOU KNOW!
Print Your Home: Giant 3D Printers Can Lay Down a House's Walls in About a Day or Two
Construction 3D printing uses large gantry or robotic-arm printers to extrude concrete or similar mixes layer by layer, building walls directly from a digital design. Printing the walls of a small house can take roughly 24 to 48 hours of print time, though roofs, windows, plumbing and finishing add more time. Supporters cite less labor and waste. The footage shows a printer laying concrete walls.
Transcript
3D printing homes is a revolutionary construction method where large scale 3D printers build houses layer by layer using materials like concrete or composites. This technique significantly reduces construction time, [...] entire homes can be printed in as little as 24-48 hours, while minimizing labor costs and material waste. 3D printing has the potential to transform the construction industry. NOW YOU KNOW!
PandaPandaPanda: A Giant Panda Eats About 12 to 38 Kilograms of Bamboo a Day
Giant pandas (Ailuropoda melanoleuca) eat almost nothing but bamboo, which is low in nutrients, so they eat a lot of it: roughly 12 to 38 kilograms (26 to 84 pounds) a day, depending on which parts they eat. They feed on leaves, stems and shoots, and spend about 10 to 16 hours a day eating; they occasionally eat other plants or small animals. The footage shows a panda eating bamboo.
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Did you know, giant pandas consume 26 to 84 pounds, or 12 to 38 kilograms of bamboo daily, depending on the availability and nutritional quality of the bamboo. Since bamboo is low in nutrients, pandas must eat large quantities to meet their energy needs. They feed on various parts of the bamboo plant, including leaves, stems, and shoots, with shoots being the most nutritious. Pandas spend up to 12 hours a day eating, making their diet almost entirely dependent on bamboo, though they occasionally consume other vegetation or small animals. NOW YOU KNOW!
Articulated Prosthesis: Myoelectric Hands Read Electrical Signals From the User's Muscles
Articulated prosthetic hands have multiple jointed fingers to mimic a natural hand. Many are myoelectric: electrodes on the skin pick up electrical signals from muscles in the residual limb, and motors turn them into grips, pinches or pointing. The footage shows a prosthetic hand moving its fingers.
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Did you know? Articulated prosthetic hands are advanced devices designed to replicate the functionality and appearance of a natural hand. These prosthetics feature multiple movable joints and fingers, enabling precise and natural-looking movements. Many articulated prosthetic hands are myoelectric, meaning they use electrical signals from the user's muscles to control movements. Sensors detect these signals and translate them into actions like gripping, pinching, or pointing. NOW YOU KNOW!
Drone Swarms: A Drone Swarm Coordinates Dozens or Thousands of Drones at Once
A drone swarm is a group of drones that coordinate through algorithms and wireless links, sharing data in real time to keep formation, divide tasks or adapt to changes. Swarms are used for light shows, mapping and search and rescue, and are also developed for military use. The footage shows a dense swarm of drones flying in formation.
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Did you know aerial drone swarms are groups of drones that operate collaboratively, often controlled by advanced algorithms and artificial intelligence, to perform tasks collectively rather than individually. These swarms can communicate and coordinate with one another in real time, enabling them to adapt to dynamic environments, share data, and complete complex missions efficiently. Each drone in the swarm acts as part of a unified system, responding to threats and adjusting its behavior to maintain formation or achieve specific objectives. NOW YOU KNOW!
Angel of Death: An AC-130 Releasing Flares Can Trace the Shape of Wings
The Lockheed AC-130 is a heavily armed ground-attack variant of the C-130 Hercules transport, first used by the U.S. Air Force during the Vietnam War in the late 1960s. Like many military aircraft, it carries flares, pyrotechnic decoys that burn hot to draw infrared-guided missiles away. Released in symmetric patterns, the flare trails can resemble wings, a display sometimes called angel flares. The footage shows an AC-130 releasing flares.
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Did you know the Lockheed AC-130, a heavily armed ground attack aircraft, uses flares as the defensive countermeasure against heat-seeking missiles? These flares are pyrotechnic devices designed to burn hotter than the aircraft's engines, effectively distracting infrared-guided missiles away from the AC-130. When deployed, the flares create a spectacular display of bright, burning trails, commonly referred to as angel wings, due to their shape when released in a defensive maneuver. NOW YOU KNOW!
Cerastes Cerastes: The Saharan Horned Viper Has a Spike Over Each Eye
The Saharan horned viper (Cerastes cerastes) is a venomous snake of the deserts of North Africa and parts of the Middle East. Many individuals have a horn-like scale above each eye, though some lack them. Its sandy coloring camouflages it, it often buries itself in sand to ambush prey, and it moves by sidewinding, leaving distinctive tracks. The footage shows a horned viper in sand.
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Did you know horned vipers, such as the Saharan horned viper, or Cerastes cerastes, are venomous snakes found in arid regions like deserts and semi-deserts of North Africa and the Middle East. They are easily recognized by the distinctive horn-like scales above their eyes, though some individuals lack these horns. These snakes are masters of camouflage, blending seamlessly into sandy environments with their pale, sandy-colored scales. Horned vipers use a sidewinding motion to move efficiently across loose desert sand, leaving distinctive tracks. NOW YOU KNOW!
Garbage Water II: Autonomous Boats Can Skim Floating Trash From Rivers
Autonomous river-cleaning robots are small boats that navigate waterways on their own, using sensors, cameras and software to spot floating plastic and debris, scoop it into onboard bins and steer around obstacles and wildlife. Several cities and companies have tested them on rivers, canals and harbors. The footage shows a robotic boat collecting floating trash.
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Did you know? Autonomous river cleaning robots are innovative solutions designed to combat water pollution by navigating waterways and removing debris without human intervention. Equipped with advanced sensors, artificial intelligence, and computer vision, these robots can identify and collect floating waste, such as plastics and organic debris, while avoiding obstacles and marine life. NOW YOU KNOW!
Leech Gourmet II: Some Large Leeches Attack Frogs and Other Amphibians
Not all leeches are small blood-sippers. Some large leeches prey on amphibians such as frogs in rainforests and freshwater, latching on with their muscular, suckered bodies and feeding on blood or soft tissue; some species use a proboscis to pierce prey, while others have jaws. The footage shows a large leech attacking a frog.
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Giant leeches are known [...] amphibians like frogs in their natural habitats, which include rainforests and freshwater environments. These leeches use their strong muscular bodies to latch onto their prey, overpowering [...] with their size and suction force. They employ a probuscus, a specialized feeding structure, to pierce [...] of their prey [...] blood or consume soft tissues. This predatory behavior is particularly striking [...] it shows how leeches can extend beyond their typical role as blood feeders to actively hunt and consume larger prey. NOW YOU KNOW!
Naturally Selected: Stork Parents Sometimes Push a Weak Chick Out of the Nest
Storks often lay several eggs that hatch days apart, so chicks differ in size. When food is scarce, parents may kill or eject the weakest chick, focusing care on those most likely to survive; biologists call this brood reduction. White storks (Ciconia ciconia) have been filmed throwing chicks from nests. The footage shows a stork pushing a chick out of a nest.
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Did you know? Storks, like many other birds, may discard immature or weaker chicks under certain circumstances. This behavior, known as brood reduction, occurs when parents prioritize their resources for the healthiest offspring. To ensure their survival, storks often lay multiple eggs, but the hatchlings may not develop equally. If food is scarce or environmental conditions are harsh, the parents may push weaker chicks out of the nest, focusing on those with a better chance of thriving. NOW YOU KNOW!
Varnish Vanishing: Old Varnish Yellows and Hides a Painting's True Colors
Varnish protects paintings and saturates their colors, but natural resin varnishes yellow and darken with age. Conservators test solvents on small, hidden areas, then roll swabs to dissolve and lift the old varnish in small sections without disturbing the paint, often revealing much brighter colors. A new, stable varnish may be applied afterward. The footage shows a conservator swabbing varnish off a painting.
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Did you know? Removing varnish from old paintings is a delicate process that requires expertise and precision to avoid damaging the underlying artwork. Varnish, applied to protect and enhance the painting, can yellow and obscure details over time. Conservators use specialized solvents tailored to the specific type of varnish and painting medium. The process begins with careful testing on a small, inconspicuous area to ensure the solvent removes the varnish without affecting the paint layers. Using cotton swabs or soft brushes, conservators gently dissolve and lift the varnish layer in small sections, revealing the original colors and details beneath. NOW YOU KNOW!
Shanghai: Shanghai Is Home to About 24 Million People
Shanghai, on China's east coast where the Yangtze River meets the East China Sea, has about 24 million residents and is a major center of finance and trade. It grew as an international port after 1842. The Bund waterfront is lined with early 20th-century buildings, while Pudong across the Huangpu River holds modern skyscrapers. The footage shows the Shanghai skyline.
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Did you know, Shanghai, China's largest city, is a global hub for finance, commerce, and culture. Located on the eastern coast, where the Yangtze River meets the East China Sea, Shanghai boasts a population of over 24 million people, making it one of the most populous cities in the world. Historically, Shanghai has been a center of international trade since the 19th century, blending western influences with Chinese traditions. The Bund, a waterfront promenade, showcases colonial-era architecture, while areas like Pudong highlight modern urban development. NOW YOU KNOW!
Seems Familiar: Scientists Build Virtual Worlds for Mice Running on Treadmills
Researchers place mice and rats in virtual reality setups, typically with the animal on a treadmill or floating ball surrounded by screens that update as it walks. Because the animal stays in place, scientists can record neurons during navigation, learning and decision-making. Newer systems use tiny headsets. The footage shows a mouse in a VR rig.
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Did you know, VR testing on animals like rats and mice involves placing them in controlled virtual environments to study their behavior, cognition, and neurological responses. This is achieved by designing VR systems tailored to small animals, such as treadmills or spherical setups that track their movements and adjust the virtual world accordingly. NOW YOU KNOW!
Desert Express: Desert Railways Fight a Constant Battle With Drifting Sand
Railways across deserts such as the Sahara, the Arabian Peninsula and the Australian outback carry freight and ore across arid regions but face blowing, abrasive sand. Lines may be built on raised ballast beds so sand blows across, sand fences and barriers are placed along exposed stretches, and crews clear drifts from the track. The footage shows the view from the front of a train as it runs over sand-covered rails.
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[...] running through desert sand face unique challenges due to shifting terrain and abrasive conditions, but they are vital for transporting goods and resources across arid regions. Railways in deserts [...] those in the Sahara, Arabian Peninsula, or Australian outback, often feature specialized track designs and maintenance practices. [...] are sometimes elevated on ballast beds to prevent sand accumulation, while sand fences or barriers are installed along vulnerable [...] to minimize drifting. NOW YOU KNOW!
Bone Eater: Bone Makes up Most of the Bearded Vulture's Diet
The bearded vulture (Gypaetus barbatus) lives in mountains of Europe, Africa and Asia and feeds mainly on bones, which can make up 70 to 90 percent of its diet. Its very acidic stomach digests large bone pieces, and it drops bones too big to swallow from height onto rocks to break them. The footage shows a bearded vulture carrying and dropping a bone.
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Did you know? Bearded vultures have a highly specialized diet, primarily consisting of bones. Up to 90% of their diet is bone material, which they consume to extract the rich nutrients, particularly calcium and marrow. They are equipped with strong stomach acids, capable of digesting bone within about 24 hours. Bearded vultures often pick up large bones and drop them from great heights onto rocky surfaces, a behavior known as bone dropping, to break them into smaller, manageable pieces. NOW YOU KNOW!
From the Depths: The Viper Dogfish Can Throw Its Jaws Forward to Snag Prey
The viper dogfish (Trigonognathus kabeyai) is a small, rarely seen deep-sea shark of the Pacific, recorded off Japan and Hawaii. It has long, fang-like teeth and jaws that can shoot far forward to grab fish and crustaceans. It migrates toward shallower water at night to feed. The footage shows a viper dogfish thrusting its jaws.
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Did you know the viper shark, also known as Trigonognathus kabeyai, is a rare and little-known deep sea species found in the Pacific Ocean, particularly near Japan, Taiwan, and Hawaii. Named for its menacing fang-like teeth, the viper shark uses its extendable jaws to capture prey in the dark depths of the ocean, often ambushing small fish and squid. NOW YOU KNOW!
Air Burst Sorting: Cameras Spot an Item and a Puff of Air Knocks It Aside
Optical sorters feed items along a belt or chute past cameras or sensors that judge color, shape or material. When an item matches the rejection rule, a precisely timed burst from an air jet knocks it into a separate stream. The method is used in recycling, food processing and mining. The footage shows mixed recyclables being sorted by air jets.
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Did you know, pressurized air sorting is a technique used to separate materials based on their size, weight, or composition by directing controlled bursts of air of the items. It is commonly employed in recycling facilities, food processing, and industrial production lines. The process involves speeding materials onto a conveyor or into a shoot, where sensors or cameras identify specific items based on pre-programmed criteria, such as weight, shape, or material type. Once an item is detected, a high-pressure air nozzle precisely targets and ejects it into a designated bin or stream, separating it from the rest of the material. NOW YOU KNOW!
Hose Goals: A Wide Water Fog Can Shield Firefighters From Radiant Heat
Firefighters can use a wide fog pattern from a hose as a protective water curtain. Fine droplets absorb heat, especially as they turn to steam, cool nearby surfaces and block radiant heat, and the steam can dilute oxygen near the flames. Crews use it to advance on or retreat from fires. The footage shows firefighters advancing behind a water spray.
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Did you know? Fire hoses shield firefighters from flames by providing a continuous stream of water that absorbs heat, cools surrounding areas, and creates a protective barrier. The water spray reduces the temperature of the fire and nearby surfaces, preventing heat from radiating towards the firefighters. Additionally, the mist and steam generated by the water can displace oxygen around the fire, suppressing flames and reducing their intensity. NOW YOU KNOW!
Rolling Steel: Three Rollers Can Curl a Flat Steel Plate Into a Tube
Plate rolling bends flat steel into curves and cylinders. In a common three-roll machine, two lower rollers support the plate while an upper roller presses down, and the plate is run back and forth as the pressure increases step by step. Adjusting roller position and pressure sets the curve for plates of different thicknesses. The footage shows a thick plate being rolled.
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Using rollers to bend steel is a common industrial process called plate rolling or metal rolling, where steel is passed through a series of rollers to form it into curved shapes or cylindrical forms. The process involves three main rollers, two lower rollers that support the steel plate [...] roller that [...] downward pressure to bend [...] incrementally as it moves [...] the machine. By adjusting the pressure and positioning of the rollers, manufacturers can achieve precise bends or curves in steel plates of various thicknesses and lengths. NOW YOU KNOW!
Jellyfish Delicious: Sea Turtles Can Eat Stinging Jellyfish
Sea turtles, especially leatherbacks (Dermochelys coriacea), eat jellyfish. Leatherbacks have sharp, scissor-like jaws, and their mouths and throats are lined with backward-pointing spines called papillae that grip slippery prey and let them expel water without losing the meal. The footage shows a sea turtle eating a jellyfish.
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Turtles, particularly sea turtles like leatherbacks, can eat jellyfish thanks to specialized adaptations. They have tough, scissor-like jaws that allow them to bite through the jellyfish's soft gelatinous body without injury. Additionally, their mouths and throats are lined with backward pointing spines called papillae which help grip the slippery jellyfish and prevent it from escaping as [...] swallows. NOW YOU KNOW!
Turbine Troubles: In a Blade-Out Test, a Fan Blade Is Blown off at Full Power
Before certification, jet engines go through destructive tests. In a fan blade-out test, a blade is released at full power with a small explosive charge, and the casing must contain the fragments and the engine must shut down safely. Other tests fire birds, ice and water into running engines. The footage shows engine tests on a test stand.
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Did you know? Jet engine failure tests are rigorous procedures conducted to ensure engine safety and reliability under extreme conditions. These tests simulate various failure scenarios, such as bird strikes, blade breakages, and ingestion of debris to assess the engine's durability and containment capabilities. For example, during a blade-out test, an engine fan blade is deliberately detached at full power to verify that the engine casing can contain the fragments and prevent damage to the aircraft. NOW YOU KNOW!
Rabies Crazies: Rabies Travels Along Nerves From a Bite to the Brain
Rabies is a viral infection usually spread by bites or scratches from infected animals. The virus travels along peripheral nerves to the brain, where it causes encephalitis. Animals may show furious rabies, with aggression, drooling and lack of fear, or paralytic rabies, with weakness and paralysis. Once symptoms appear it is nearly always fatal, though vaccination soon after exposure prevents it. The footage shows animals with behavior changes.
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Did you know, rabies affects animals by attacking their central nervous system, leading to severe neurological symptoms and ultimately death. After a bite or scratch from an infected animal, the rabies virus travels through the peripheral nerves to the brain. Once in the brain, it multiplies rapidly, causing inflammation or encephalitis that leads to dramatic behavioral and physical changes. Affected animals often exhibit one of two forms, furious rabies, marked by aggression, excessive drooling and fearlessness, or paralytic rabies, characterized by weakness, disorientation, and paralysis. NOW YOU KNOW!
Advanced Bicycle Riding II: Fat Bikes Ride Snow on Extra-Wide Tires
Snow biking covers riding bicycles on snow, mostly on fat bikes with tires about 4 to 5 inches wide run at low pressure for grip and flotation. Ski bikes or skibobs replace one or both wheels with skis and are ridden on slopes. Riders use groomed trails, backcountry routes and ski areas. The footage shows riders racing down a snowy slope.
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Did you know? Snow biking is an exhilarating winter sport that combines elements of cycling and skiing. Riders use specially designed bikes, often called fat bikes, equipped with oversized tires that provide enhanced traction and stability on snow and ice. Some variations use a ski in place of the front wheel or both wheels, converting the bike into a hybrid snow vehicle. Snow biking can be done on groomed trails, backcountry paths, or ski slopes, offering a unique way to explore snowy landscapes. The sport requires balance, strength, and coordination as riding on snow presents challenges like reduced grip and increased resistance. NOW YOU KNOW!
Insect Murder Mesh: Bug Zappers Lure Insects With UV Light Onto an Electrified Grid
A bug zapper uses a transformer to charge an inner wire grid to a high voltage. Ultraviolet light or bait attracts insects; when one bridges the gap between grid wires, current flows through it and kills it. An outer protective mesh keeps hands and larger objects away from the live grid. The footage shows insects being zapped.
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Did you know? Bug zapping meshes work by using a high-voltage electrical grid to instantly kill insects on contact. These devices typically consist of an outer protective mesh and an inner electrified grid powered by a transformer. The protective mesh ensures safety by preventing larger objects, like human hands, from touching the electrified inner grid. When an insect flies toward the zapper, it is attracted by UV light or a bait substance placed within the device. As the insect comes into contact with the inner grid, it completes the circuit, causing an electric current to pass through its body. NOW YOU KNOW!
Self-Parking Chairs: In 2016, Nissan Built Office Chairs That Park Themselves
In February 2016, Nissan showed the Intelligent Parking Chair, an office chair that rolls itself back to its place at a table when someone claps. Based on its cars' parking-assist technology, the system used four cameras on the walls to track each chair from above and steer motorized wheels. It was a promotional demonstration rather than a product. The footage shows the chairs returning to a conference table.
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Did you know, in February 2016, Nissan introduced the intelligent parking chair, an innovative office chair that autonomously returns to its designated position with a simple clap. Inspired by Nissan's intelligent parking assist technology used in vehicles, the chair is equipped with a 360-degree motorized roller system and communicates with a network of four motion-detecting cameras mounted on the room's walls. These cameras generate a bird's-eye view and wirelessly transmit the chair's current location and intended destination. NOW YOU KNOW!
The Chase: The Reel Cites 3,336 Deaths in U.S. Police Pursuits From 2017 to 2022
Police vehicle pursuits in the United States can end in fatal crashes. The Reel cites at least 3,336 deaths from 2017 to 2022, nearly two a day, and says about 27% were bystanders; many pursuits begin over traffic violations or other nonviolent offenses, and policies on when to pursue vary by department. I attributed the figures to the Reel. The footage shows a police chase.
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Did you know high-speed police chases in the United States result in significant fatalities each year, with estimates indicating that over 300 individuals lose their lives annually. Notably, a substantial portion of these fatalities, approximately 27%, are innocent bystanders. Between 2017 and 2022, at least 3,336 people died in police pursuits, averaging nearly two deaths per day. These pursuits often begin over non-violent offenses, such as traffic violations or misdemeanors, raising concerns about the proportionality of the risks involved. NOW YOU KNOW!
Raccoon Wash: Raccoons Dunk Food in Water, but Probably Not to Clean It
Raccoons (Procyon lotor) often dabble or dunk food in water. Researchers think this is not cleaning: their front paws are packed with sensitive nerve endings, and wetting them may heighten touch, helping them identify food. Raccoons also do the motion without water. The footage shows a raccoon rubbing food in water.
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Did you know, raccoons are often observed dunking or washing their food and water, a behavior that has intrigued researchers and observers alike. Initially believed to be an act of cleaning, studies suggest it may instead enhance their tactile perception. Raccoons have highly sensitive paws with numerous nerve endings, and wetting their paws may amplify their ability to feel textures and identify food items. NOW YOU KNOW!
Heavy Flavor, Heavy Flow: Pyroclastic Flows Can Race Downhill at Hundreds of Kilometers an Hour
Pyroclastic flows are fast-moving currents of hot gas, ash and rock fragments that rush down a volcano's slopes during explosive eruptions. They typically move at about 100 kilometers per hour and can exceed 700 kilometers per hour, with temperatures that can top 1,000 degrees Celsius, making them among the deadliest volcanic hazards; one destroyed Saint-Pierre on Martinique in 1902. The footage shows glowing lava flows rather than a pyroclastic flow.
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Did you know? Pyroclastic flows are fast moving, extremely hot mixtures of volcanic gases, ash, and rock fragments that surge down the slopes of a volcano during an eruption. These flows can reach speeds of over 700 kilometers per hour or 430 miles per hour and temperatures exceeding 1000 degrees celsius or 1832 degrees fahrenheit, making them one of the most deadly volcanic hazards. NOW YOU KNOW!
Pump Cavitation: When Pressure in a Pump Drops Too Low, the Liquid Boils Into Bubbles
Cavitation happens when local pressure in a pump falls below the liquid's vapor pressure, so vapor bubbles form. As the bubbles move into higher-pressure zones they collapse violently, sending out shock waves that cause noise, vibration, lost efficiency and pitting of gears, impellers and housings. The footage shows bubbles forming inside a transparent pump.
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Did you know, cavitation in gear pumps occurs when the pressure in the pump drops below the vapor pressure of the fluid, causing bubbles to form in the liquid. These bubbles are carried through the pump and collapse when they encounter higher pressure zones, generating shock waves and vibrations. NOW YOU KNOW!
Fall Marya: On October 18, 1951, the Soviet Union Air-Dropped an Atomic Bomb for the First Time
RDS-3, the Soviet Union's third nuclear test, took place on October 18, 1951, at the Semipalatinsk Test Site in present-day Kazakhstan. It was the first Soviet atomic bomb dropped from an aircraft, a Tupolev Tu-4 bomber, and it detonated about 400 meters above the ground with a yield of about 42 kilotons. The footage shows archival test film.
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Did you know, on October 18th, 1951, the Soviet Union conducted its third nuclear test, designated RDS-3, at the Semipalatinsk test site in Kazakhstan. This event marked the USSR's first airdropped atomic bomb test, with the device released from a Tupolev aircraft and detonated at an altitude of approximately 400 meters. NOW YOU KNOW!
Tanking Railways: Trains Carry Tanks on Heavy-Duty Flatcars
Armies often move tanks over long distances by rail, loading them onto heavy-duty flatcars and securing them with chains, straps and wheel or track chocks. Rail moves many vehicles at once, saves wear on the tanks and roads and costs less than moving each one separately; it is used for deployments, exercises and transfers between bases. The footage shows tanks on rail flatcars.
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Did you know, transporting tanks by train involves loading military vehicles onto specialized flatbed rail cars designed to handle their heavy weight and large size. Tanks are typically secured using strong chains, straps, and wheel chocks to prevent movement during transit, ensuring safety on the rails. Trains are an efficient method for moving tanks over long distances due to their high load capacity and ability to traverse diverse terrain. This method is commonly used for military deployments, training exercises, or moving equipment between bases. Rail transport allows for the movement of multiple tanks in a single trip, reducing logistical costs, and ensuring timely delivery. NOW YOU KNOW!
Baffling: Rows of Concrete Blocks Slow Water Rushing Down a Spillway
Baffle blocks are concrete blocks set in spillways, canals, chutes and stilling basins to break up fast flows. They create turbulence that dissipates the water's energy and slows it, reducing erosion and damage downstream. Their size and spacing are designed for the expected flow. The footage shows water churning over rows of baffle blocks.
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Baffle blocks are structures placed in waterways to dissipate the energy of flowing water and reduce erosion and damage downstream. Typically located in areas like spillways, canals, or flood channels, these blocks [...] disrupt the flow velocity water by creating turbulence, which slows the water's speed. Made from durable materials such as concrete, baffle blocks [...] strategically arranged to evenly distribute [...] dissipation. NOW YOU KNOW!
Snowplower: Rotary Plows Can Throw Snow Far From the Tracks
Railroads use several types of snow-clearing equipment. Wedge plows push snow to either side, rotary plows use a spinning bladed wheel to cut deep drifts and hurl snow away, and flangers clear snow and ice from the flangeways beside and between the rails. They keep lines open in heavy-snow regions. The footage shows a rotary plow throwing a plume of snow.
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Did you know? Train snow plows are specialized rail vehicles designed to clear snow and ice from railway tracks. Ensuring safe and efficient train operations during winter, these plows come in various designs, including wedge plows, rotary plows, and flangers. Wedge plows push snow to the sides of the track, while rotary plows use spinning blades to cut through deep snow and throw it far away from the rails. Flangers are used to clear snow and ice from between the rails. Train snow plows are essential in regions with heavy snowfall, as they prevent track blockages and reduce delays. NOW YOU KNOW!
AI Surgery: Robotic Systems Let Surgeons Operate Through Tiny Incisions
Robot-assisted surgery systems such as the da Vinci Surgical System let a surgeon at a console control robotic arms that hold instruments and a 3D camera, scaling down hand movements for fine work through small incisions. Software and AI are being added for imaging, guidance and analysis, but in clinical use the surgeon directs the procedure. The footage shows robotic arms performing delicate tasks.
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Did you know, surgical robots powered by AI are transforming modern medicine by combining robotics and machine learning to enhance accuracy and efficiency in complex procedures. These robots use real-time imaging and data analysis to adapt to individual anatomies, guiding instruments with submillimeter precision while minimizing tissue damage. Systems like the da Vinci surgical system allow surgeons to control robotic arms with enhanced ability, while AI provides real-time feedback and assists with tasks like suturing and micro-adjustments. NOW YOU KNOW!
Acid Rust Removal: Acids Dissolve Rust and Leave Bare Metal Behind
Rust is iron oxide. Acids, from mild citric or phosphoric acid to strong hydrochloric (muriatic) acid, react with it and dissolve it, leaving bare metal; in industry this is called pickling. Because bare steel rusts quickly and leftover acid keeps attacking it, the part is neutralized with a base such as baking soda, rinsed and dried or coated. The footage shows rusty parts cleaned in acid.
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Did you know? Acid, particularly weak acids like citric acid or stronger ones like hydrochloric acid, also known as muriatic acid, are commonly used for rust removal. The acid reacts with the rust, iron oxide, and dissolves it, leaving behind the clean metal surface. This process is known as acid etching. However, after using acid, it's important to neutralize the surface with a base, like baking soda, and thoroughly rinse to prevent further corrosion. NOW YOU KNOW!
Enter Sion: Sion Airport Sits Deep in the Rhône Valley, Ringed by Alps
Sion Airport (LSGS) lies in the Rhône Valley in Switzerland's canton of Valais, surrounded by high Alpine terrain. According to the Reel, its instrument approach to Runway 25 uses an instrument guidance system with an initial 6-degree glide slope that eases to 4 degrees, much steeper than the standard 3 degrees, and pilots need special authorization to fly instrument approaches there. The footage shows an approach into the valley.
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Approaching Sion Airport or LSGS in Switzerland presents unique challenges due to its location in the Rhône Valley surrounded by the Swiss Alps. The airport's primary instrument approach is an instrument guidance system or IGS for Runway 25 featuring an initial glide slope of 6°, that transitions to 4° on final approach, [...] the standard 3° glide slope. This steep [...] requires precise aircraft control and familiarity with the terrain. [...] must obtain a special authorization to conduct IFR approaches at Sion. NOW YOU KNOW!
Tesla's Coil: A Tesla Coil Steps up Voltage Until the Air Itself Sparks
A Tesla coil is a resonant transformer invented by Nikola Tesla around 1891. A capacitor discharges through a primary coil of a few turns, and the oscillating magnetic field induces current in a secondary coil of many turns; resonance between the circuits builds very high voltage at high frequency. At the top terminal the voltage ionizes air and throws sparks. The footage shows a Tesla coil discharging.
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Did you know? Tesla coils work by generating high-voltage, high-frequency electricity using two coupled circuits, a primary and a secondary. The primary circuit includes a power source, a capacitor, and a coil. When the capacitor discharges, it sends current through the primary coil, creating a magnetic field. This field induces a current in the secondary coil via electromagnetic induction, significantly amplifying the voltage due to the secondary coil's higher number of turns. The resulting high-frequency alternating current travels to the terminal, where it ionizes the surrounding air. NOW YOU KNOW!
Hazardous Working Conditions: Some High-Rise Workers Still Work at Height Without Fall Protection
Falls from height are among the leading causes of death in construction worldwide. The Reel describes skyscraper sites where weak regulation, limited training and missing harnesses, fall-arrest systems and safe scaffolding put workers at risk, along with unguarded machinery and unsafe material handling. The footage shows a first-person view from high on a building under construction, with no visible fall protection.
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Did you know? Skyscraper construction workers in developing regions often face hazardous working conditions due to a lack of stringent safety regulations, inadequate training, and insufficient protective equipment. Workers frequently operated extreme heights without proper harnesses or fall arrest systems, exposing them to significant risks of falls. Additionally, poor scaffolding construction, exposure to heavy machinery without adequate safeguards, and unsafe handling of materials like steel and concrete further increased the danger. NOW YOU KNOW!
Spreading Seeds: A Skydiver Released 100 Million Seeds Over a Deforested Patch of the Amazon
In January 2022, Brazilian skydiver Luigi Cani jumped over a deforested area near Novo Aripuanã in Brazil's Amazonas state and released about 100 million seeds of 27 native tree species from a biodegradable box. The box was dropped from a plane, and Cani reached it in free fall and opened it at about 6,500 feet so the seeds would spread evenly. The project aimed to help regrow the forest. The footage shows the jump and the seed release.
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Did you know, in January 2022, Brazilian skydiver Luigi Cani executed a remarkable environmental initiative by dispersing 100 million seeds from 27 native plant species over a deforested area of the Amazon rainforest. Leaping from an aircraft at 6,500 feet, Cani released the seeds contained in a biodegradable box designed to distribute them evenly across the targeted region. This effort aimed to promote reforestation and restore biodiversity in areas severely impacted by deforestation. NOW YOU KNOW!
Old-Timey Laundry: Early Washing Machines Were Powered by Hand Cranks and Pedals
Before electric washers spread in the 20th century, many households used hand-cranked or lever-operated machines with wooden tubs and internal paddles or dollies that agitated clothes. They still took real effort but were easier than scrubbing on a washboard. Electric washing machines appeared in the early 1900s. The footage shows an antique wooden washer being cranked.
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Did you know antique washing machines from the 1900s reflect the transition from manual labor to mechanized household appliances? Early models were often hand-cranked or pedal-powered, and used wooden tubs with internal paddles to agitate clothes. These machines required significant physical effort, but were a step up from washing by hand. NOW YOU KNOW!
Gassy Accidents II: A Gas Leak at a Pyeongchang LPG Station Ended in an Explosion
On the evening of January 1, 2024, gas leaked during the filling of a bulk truck at an LPG charging station in Pyeongchang County, Gangwon Province, South Korea, and exploded. Five people were injured, two with severe burns, 14 buildings and several vehicles were damaged, and the fire took about three hours to put out; nearby residents were evacuated. The Reel gives the date as January 24. The footage shows the explosion and fire.
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Did you know, on January 24, a gas leak led to a devastating explosion at an LPG charging station in Pyeongchang County, South Korea, injuring five people, two severely, and damaging 14 buildings and multiple vehicles? The fire caused by the explosion took three hours to extinguish, prompting the evacuation of nearby residents. NOW YOU KNOW!
The Titanpointe: A 550-Foot Windowless Tower Stands in Lower Manhattan
The AT&T Long Lines Building at 33 Thomas Street in Manhattan is a 550-foot (168 m) windowless brutalist tower completed in 1974, designed by John Carl Warnecke & Associates to house long-distance telephone switching equipment and to withstand disasters, including nuclear fallout. In 2016, The Intercept reported that documents linked it to a National Security Agency surveillance site code-named Titanpointe; AT&T and the NSA did not confirm. The footage shows the building from street level.
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Did you know? The AT&T Long Lines building, located at 33 Thomas Street in Manhattan, is a 550-foot-tall windowless skyscraper completed in 1974 and designed in the brutalist architectural style by John Carl Warnecke. Originally constructed to house telephone-switching equipment, it served as a critical hub for long-distance communications with its fortress-like design intended to protect against nuclear attacks and other disasters. NOW YOU KNOW!
I'd Pick You: Volcanologists Scoop Molten Lava With Long Metal Tools
To study what lava is made of, volcanologists collect samples from active flows with long-handled metal picks, hammers or scoops, often quenching the sample in water to preserve it. Basaltic lava commonly reaches about 1,100 to 1,200 degrees Celsius (2,000 to 2,200 degrees Fahrenheit), so they wear heat-resistant gear and work fast. The footage shows a scientist pulling molten lava from a flow with a pick.
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Did you know, collecting lava samples using a pick is a technique employed by volcanologists to study the composition and behavior of molten rock. Since lava can reach temperatures of over 1,200 degrees celsius or 2,200 degrees fahrenheit, researchers must wear heat resistant protective gear and work quickly to minimize exposure to intense heat. They use a specially designed metal pick or hammer with a long handle to chip off pieces of the cooling lava at the edges of a flow or from solidified crusts. NOW YOU KNOW!
ICECORE: Ice Cores Hold Air Bubbles Hundreds of Thousands of Years Old
Ice cores are long cylinders drilled from glaciers and ice sheets, some from depths of more than 3,000 meters. Snow builds up in yearly layers, and air bubbles trapped in the ice preserve samples of the past atmosphere, including greenhouse gases. Antarctic cores extend back about 800,000 years and record past climate and volcanic eruptions. The footage shows a view down a borehole in the ice.
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Did you know, drilling for ice cores involves using specialized drills to extract cylindrical samples from glaciers or ice sheets, often reaching depths of thousands of meters. The drill cuts through ice, capturing sequential layers in hollow barrels. To preserve the stratified record of snow accumulation over millennia, each layer represents a specific period in Earth's history, with trapped air bubbles providing data on past atmospheric conditions such as greenhouse gas levels. Analyzing these cores offers critical insights climate patterns, volcanic activity, and human impact. NOW YOU KNOW!
Spores Galore!: One Mushroom Can Release Billions of Spores
Mushrooms are the reproductive bodies of fungi. They release microscopic spores from gills, pores or spines under the cap; many species actively launch spores a tiny distance, after which air currents carry them, sometimes very far. A single mushroom can release millions to billions of spores, raising the odds that a few land somewhere suitable. The footage shows time-lapse and close-up views of spores drifting from mushrooms.
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Mushrooms reproduce by releasing microscopic spores from specialized structures such as gills, pores, or spines located [...] caps. These spores, [...] act like seeds, are ejected into the air [...] mechanisms like air currents or pressure changes, allowing them to disperse over vast distances. A single [...] can release millions to billions of spores, increasing the chances of finding a suitable environment. NOW YOU KNOW!
We Are Condensed Energy: Einstein's E = Mc² Ties Mass and Energy Together
Albert Einstein's 1905 equation E = mc² states that mass and energy are equivalent, linked by the square of the speed of light. Ordinary matter is made of protons, neutrons and electrons, and most of the mass of protons and neutrons comes not from their quarks' own masses but from the energy of the strong force binding quarks and gluons. The footage shows abstract animations of particles and light.
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The concept of matter as collapsed or condensed energy is derived from Einstein's famous equation E = mc², which shows the equivalence of mass (m) and energy (E). This equation [...] that matter is essentially a concentrated form of energy. At its core, all matter is composed of subatomic particles like protons, neutrons, and electrons, whose masses arise from [...] within their fundamental components such as quarks and gluons. NOW YOU KNOW!
Blood Destruction: Malaria Spreads Through the Bite of Infected Female Anopheles Mosquitoes
Malaria is caused by Plasmodium parasites carried by female Anopheles mosquitoes. When an infected mosquito bites, parasites in its saliva travel to the liver, multiply, then invade and destroy red blood cells in cycles that cause fever, chills, headache and muscle pain. Severe malaria can cause anemia, organ failure and death. The footage is an animation of parasites in the bloodstream.
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Did you know? Mosquitoes transmit malaria through the bite of an infected female anopheles mosquito. When the mosquito bites a human, it injects saliva containing the plasmodium parasite into the bloodstream. The parasite travels to the liver, where it matures and multiplies, before re-entering the bloodstream to infect red blood cells. This cycle causes the destruction of red blood cells, leading to symptoms such as fever, chills, headaches, and muscle pain. Severe cases can result in organ failure, anemia, or even death. NOW YOU KNOW!
Acoustic Levitation: Sound Waves Can Hold Water Droplets in Midair
In acoustic levitation, ultrasonic transducers send sound toward a reflector or an opposing transducer, creating a standing wave with alternating high- and low-pressure regions. Small objects such as water droplets settle at the pressure nodes, where acoustic radiation pressure balances gravity. The footage shows droplets floating in a levitator.
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Did you know, levitating water droplets with sound is achieved using a phenomenon called acoustic levitation, where high-frequency sound waves create standing waves. In this process, ultrasonic transducers generate sound waves that travel upward and reflect back from a surface, creating regions of high and low pressure, known as nodes and antinodes. Water droplets can be suspended at these nodes, where the pressure from the sound waves counteracts gravity. NOW YOU KNOW!
striking!: Researchers Estimate About 17 Meteorites Reach the Ground Each Day
A 2020 study estimated that about 17 meteorites, totaling some 6,100 a year, reach Earth's surface daily, most in oceans or remote areas. Over about 4.5 billion years, impacts number in the billions. Famous craters include Chicxulub in Mexico, linked to the extinction of the non-avian dinosaurs about 66 million years ago, and Meteor Crater (Barringer Crater) in Arizona, about 50,000 years old. The footage shows an animated Earth with impact points.
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Did you know? While it is impossible to determine the exact number of meteors that have struck Earth, scientists estimate that around 17 meteors large enough to reach the ground impact the planet each day, resulting in about 6,000 annually. Most of these are small, leaving no significant traces. Over Earth's 4.5 billion year history, the total number is easily in the billions, with notable examples including the Chicxulub Crater linked to the Dinosaur Extinction and the Barringer Crater in Arizona. NOW YOU KNOW!
A Little Off the Top: Oil Floats, so Skimmers Lift It off the Water's Surface
Oil skimmers remove oil floating on water. Many use a belt, disc, drum or tube made of material that oil clings to more than water; as it moves through the surface the oil sticks, and a wiper scrapes it off into a container. Portable units handle small spills and industrial tanks. The footage shows a skimmer pulling oil from water.
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Did you know, handheld oil skimmers are portable tools designed for small-scale oil removal tasks in industrial settings or during minor oil spill cleanups. These devices typically consist of a lightweight frame with a motorized belt, disc, or tube that attracts and collects oil from the surface of the water. The collected oil is then scraped off or siphoned into a container for disposal or recycling. NOW YOU KNOW!
Fire & Ice: Lava Flowing Over Snow Melts It Into Steam
When lava, at temperatures that can exceed 1,100 to 1,200 degrees Celsius, flows onto snow, the snow melts and flashes to steam. The lava's crust and the steam layer slow heat transfer, so the flow can advance over snow surprisingly slowly, and trapped steam can burst in small explosions. Meltwater can also cause floods or lahars. The footage, credited to ABC7 Los Angeles, shows lava advancing over snow.
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Did you know, when lava flows over snow, it creates a fascinating interaction between intense heat and frozen water. The extreme heat of the lava, which can exceed 1,200 degrees celsius, or 2,200 degrees fahrenheit, causes the snow to melt rapidly, forming water that vaporizes into steam. This rapid vaporization can produce small explosions, as the steam builds up pressure beneath the lava. In some cases, the water generated by melting snow can form a barrier that slows or redirects the lava flow. NOW YOU KNOW!
MUD: Saturated Soil Can Turn Into a Fast-Moving Slurry
Mudflows are fast-moving mixtures of water, mud and debris that pour downhill when loose soil becomes saturated, often after heavy rain, during volcanic eruptions (lahars), or when dams or embankments fail. They can bury roads, buildings and vegetation under thick deposits. The footage shows a mudflow surging down a valley.
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Did you know? Mud floods are catastrophic events where large quantities of mud, water, and debris rapidly flow downhill, often triggered by heavy rainfall, volcanic activity, or the collapse of natural or man-made structures. These flows can occur when loose soil or sediment becomes saturated with water, losing stability, and transforming into a fast-moving slurry. Mud floods can cause widespread destruction, burying roads, buildings, and vegetation under thick layers of mud and debris. NOW YOU KNOW!
A Look Inside: Decapping Strips a Chip's Package to Expose the Silicon Die
Decapping removes the plastic or ceramic package from an integrated circuit such as a RAM chip to expose the silicon die. It is usually done with hot acids such as fuming nitric or sulfuric acid, or by milling or laser ablation. The exposed die can then be inspected under optical or electron microscopes for failure analysis, quality checks or reverse engineering. The footage shows a memory chip being opened and its die magnified.
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Did you know RAM decapping is a process used to expose the internal components of a RAM or random access memory chip by removing its protective outer casing or package? This technique is often employed in hardware analysis, failure investigations, or reverse engineering to study the chip's architecture and functionality at a microscopic level. The decapping process typically involves chemical etching where acids like nitric or sulfuric acid dissolve the casing or mechanical techniques such as precision milling or laser cutting to carefully strip away the outer layer. Once decapped, the chip's silicon die and internal circuitry become visible for inspection under specialized equipment like electron microscopes. NOW YOU KNOW!
Clouds From the Ground: Ground Generators Can Send Silver Iodide up Into Clouds
Cloud seeding adds particles such as silver iodide or salt to clouds so water vapor condenses or freezes on them, potentially increasing rain or snow. Ground-based generators burn a silver iodide solution and rely on winds to carry the particles into suitable clouds; aircraft are used too. How much precipitation it adds is debated. The footage shows a large vapor plume billowing from a ground test stand; it does not appear to show cloud seeding itself.
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Did you know? Cloud seeding from the ground involves releasing particles, such as silver iodide or salt, into the atmosphere from ground-based generators to encourage precipitation. These particles act as cloud condensation or ice nuclei, helping water vapor and clouds condense into droplets or form ice crystals, which then grow heavy enough to fall as rain or snow. Ground-based seeding is typically used when weather conditions, such as favorable wind patterns, allow the particles to be carried into suitable clouds. This method is often deployed in areas experiencing drought or where water resources need to be augmented. NOW YOU KNOW!
SonoShine: Sound Can Make Tiny Bubbles Flash With Light
Sonoluminescence is the emission of brief flashes of light from bubbles in a liquid driven by intense sound. The sound's pressure swings make bubbles grow and then collapse violently, compressing the gas inside to temperatures of thousands of degrees. The exact light-emitting mechanism is still debated. The footage shows a glowing bubble in a lab flask.
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Did you know? Sonoluminescence is a fascinating phenomenon where tiny bubbles in a liquid emit brief bursts of light when subjected to intense sound waves. This occurs when sound waves create alternating high-pressure and low-pressure regions in the liquid, causing bubbles to form, grow, and then collapse violently. During the collapse, the energy is concentrated in the bubble, producing temperatures of thousands of degrees and causing the bubble to emit light. This phenomenon is studied in physics and fluid dynamics. NOW YOU KNOW!
Ultrasonification: Ultrasonic Cleaners Scrub Jewelry With Collapsing Bubbles
Ultrasonic cleaners send high-frequency sound through water or a cleaning solution, creating microscopic bubbles that form and collapse, a process called cavitation. The collapses produce tiny jets and shock waves that loosen dirt and oils from rings and settings. Some gems, such as emeralds, opals and pearls, can be damaged and should not be cleaned this way. The footage shows jewelry in an ultrasonic tank.
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Did you know, cleaning jewelry with ultrasonification involves using ultrasonic waves to remove dirt, grime, and oils from intricate or hard-to-reach places. The process is carried out in an ultrasonic cleaner, which contains a tank filled with water or cleaning solution. High-frequency sound waves are emitted into the liquid, creating microscopic bubbles through a process called cavitation. These bubbles collapse rapidly, generating tiny shock waves that gently dislodge contaminants from the jewelry's surface and crevices. This method is highly effective for cleaning delicate pieces like rings, necklaces, and bracelets, made from metals and gemstones, as it reaches areas that are difficult to clean manually. NOW YOU KNOW!
Lunar Topography: With No Air or Water, the Moon's Craters Barely Erode
The Moon's craters were made by impacts of asteroids, comets and meteoroids over billions of years. Many large basins date to an early period of heavy bombardment, sometimes called the Late Heavy Bombardment, often placed about 4.1 to 3.8 billion years ago. The South Pole-Aitken Basin, about 2,500 kilometers across, is the largest. Without air or water, there is little erosion to wear them away. The footage shows close-up views of the lunar surface.
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Did you know? The moon's craters were formed primarily by impacts from asteroids, comets, and meteorites over billions of years. During the early history of the solar system, around 4.5 billion years ago, a period known as the Late Heavy Bombardment saw intense collisions between celestial bodies. These impacts created the moon's characteristic craters, ranging in size from small pits to massive basins, like the South Pole-Aitken Basin. Since the moon lacks an atmosphere, there is no erosion from wind or water to smooth out these features, allowing the craters to remain relatively unchanged over time. NOW YOU KNOW!
The Nozzle Knows: A Shaped Nozzle Turns Soft Gelato Into Neat Swirls
Soft gelato and soft-serve machines freeze and aerate the mix, then dispense it through a nozzle that sets the portion and shape. Nozzles are usually stainless steel for hygiene and can have decorative tips for swirls. The Reel describes the nozzle as part of the move from manual scooping to machines; I attributed that history to the Reel. The footage shows gelato being dispensed in shaped swirls.
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Did you know the gelato dispenser nozzle originated as part of the evolution of machinery designed to streamline the serving of gelato and other soft desserts? Early gelato makers relied on manual scooping, but as gelato gained popularity, specialized machines were developed to ensure consistency and efficiency. The nozzle became an essential feature of modern gelato machines, allowing precise portions to be dispensed directly into cones or cups. These nozzles are often crafted from stainless steel for hygiene and durability, and some are fitted with decorative tips to create aesthetically pleasing swirls or shapes. NOW YOU KNOW!
Button Bashing: Plastic Buttons Are Injection Molded; Metal Ones Are Stamped
Buttons are made from plastic, metal, wood, shell or fabric. Plastic buttons are usually injection molded or cut from cast sheets, and metal buttons are stamped from sheet metal. Holes are drilled or molded, and the buttons are finished by polishing, painting or plating. The footage shows a factory punching and finishing buttons.
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Did you know, button production typically begins with material selection, as buttons can be made from a range of materials such as plastic, metal, wood, or fabric, each affecting the button's appearance, durability, and cost. Once materials are chosen, designs are created and molds are produced for shaping the selected materials. Common methods include injection molding for plastic buttons and stamping for metal ones. After shaping, the buttons undergo processes such as finishing, where they may be painted, polished, or decorated, to enhance their aesthetic appeal. NOW YOU KNOW!
nICE: Ice Factories Freeze Huge Blocks, Then Slice Them With Saws
Commercial ice plants freeze large blocks in molds, lift them out with cranes or conveyors, and cut them with industrial bandsaws or cutting machines into smaller blocks, cubes or crushed ice. Some blocks are shaped or carved to order. The ice is rinsed, packaged and kept in cold storage. The footage, credited to kuramoto_ice_global, shows blocks of ice being sawed.
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Did you know, in ice factories, large blocks are cut and processed using industrial bandsaws or specialized cutting machines. After being lifted from molds by cranes or conveyor systems, the ice is sliced into manageable sizes like cubes or crushed ice. For custom orders, machines can shape or etch the blocks to specific dimensions or designs. Once cut, the ice is rinsed to remove fine particles, ensuring a clean appearance and smooth texture. Finally, the ice is packaged and stored in temperature controlled rooms, ready for distribution. NOW YOU KNOW!
The Dulla: Male Dromedaries Push a Pink Balloon Out of Their Mouths
The dulla is a male dromedary camel's soft palate, which he inflates and pushes out of the side of his mouth as a pink, balloon-like sac during the rutting season. It comes with gurgling sounds and is used to attract females and warn rival males. The footage shows camels displaying their dullas.
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Did you know that Dulla is a large inflatable sack found in the throats of male dromedary camels, which they display during the mating season. When inflated, it protrudes from the side of their mouths, resembling a balloon. This behavior is both a visual and auditory signal used to attract females and assert dominance over other males. The Dulla helps amplify the camel's vocalizations, creating deep, gurgling sounds that are part of their courtship rituals. NOW YOU KNOW!
433 Eros: Asteroid 433 Eros Is About 34 Kilometers Long
433 Eros is a near-Earth asteroid about 34 by 11 by 11 kilometers, discovered in 1898. NASA's NEAR Shoemaker spacecraft orbited it in 2000 and landed on it on February 12, 2001, the first landing on an asteroid. Manhattan is about 21.6 kilometers (13.4 miles) long, so Eros would overhang it. The footage shows an animated Eros hovering over a landscape for scale.
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Did you know Asteroid 433 Eros is about 34 kilometers or 21 miles long and 11 kilometers or 7 miles wide, making it significantly larger than New York City. For comparison, NYC spans roughly 13.4 miles or 21.6 kilometers from North to South in Manhattan. Eros, elongated in shape, would stretch almost the entire length of Manhattan and then some. Its surface area would cover multiple boroughs if it laid over the city. NOW YOU KNOW!
Sanctuary of Truth: A 105-Meter Wooden Sanctuary in Pattaya Has Been Under Construction Since 1981
The Sanctuary of Truth in Pattaya, Thailand, is a carved wooden structure about 105 meters tall, built with wooden joinery rather than metal nails. Thai businessman Lek Viriyaphant began it in 1981, and carving and restoration continue; the Reel puts completion around 2050. Its design mixes Thai, Khmer, Chinese and Indian styles with Hindu and Buddhist imagery. The footage shows the sanctuary and its carvings.
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Did you know, The Sanctuary of Truth in Pattaya, Thailand is a towering wooden structure built entirely without nails, standing at 105 meters and adorned with intricate carvings that reflect Hindu and Buddhist themes. Initiated in 1981 by Thai businessman, Lek Viriyaphant, The Sanctuary remains an ongoing project with anticipated completion around 2050. Its design combines elements of Thai, Khmer, Chinese and Indian architecture, representing an ancient worldview and Eastern philosophy. NOW YOU KNOW!
Imposter Crab: Imitation Crab Is Mostly White Fish, Usually Alaska Pollock
Imitation crab is made from surimi: white fish, often Alaska pollock, is minced and washed to remove fat and impurities, leaving a protein paste. The paste is mixed with starch, egg white and flavorings, heated and shaped into sticks or flakes, colored red on one side, then packaged and frozen. The footage shows surimi sticks being made on a factory line.
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Did you know, imitation crab, often made from a fish paste called surimi, is processed by first washing white fish, usually Alaskan pollock, to remove fat and impurities, leaving a protein-rich paste. This paste is mixed with starch, egg whites, and flavorings, then ground into a smooth elastic consistency. The mixture is heated and shaped to mimic the texture of real crab meat, with some pieces colored with red dye to resemble the look of crab legs. The final product is then cut into various shapes, vacuum sealed, and frozen for distribution to retain freshness and texture. NOW YOU KNOW!
Leafy Sheep: A Sea Slug That Looks Like a Tiny Cartoon Sheep
Costasiella kuroshimae, nicknamed the leaf sheep, is a sea slug about 5 millimeters long found in shallow waters around Japan, Indonesia and the Philippines. Its back is covered in green, leaf-like cerata. It eats algae and keeps their chloroplasts in its tissues, a process called kleptoplasty; how much energy it gains from them is still studied. The footage shows macro views of the slug.
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Did you know, the leaf sheep, scientifically known as Costasiella kuroshimae, is a tiny [...] slug known for, its plant-like appearance and unique ability to photosynthesize found in the shallow waters around Japan, Indonesia, and the Philippines. This 5mm long sea slug resembles a miniature sheep covered in green leaf-like structures. These green leaves are actually cerata, small appendages that allow the leaf sheep to absorb chloroplast from the algae it consumes. A process called kleptoplasty. NOW YOU KNOW!
Quarrels With Quarrying?: Marble and Onyx Are Sliced Out in Clean Blocks
Decorative stones such as marble and onyx are quarried with diamond wire saws and other precision cutters to free large, undamaged blocks. Shale, used for cement and bricks, is broken out with heavy machinery or blasting and crushed. The method depends on whether the stone's appearance matters. The footage shows wire saws and machines working a quarry.
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Did you know, the quarrying of onyx, marble, and shale involves distinct methods tailored to each stone's purpose and characteristics for onyx and marble, which are prized for their appearance. Precision cutting tools, such as diamond tip saws and wire saws, are used to extract large blocks with minimal damage. This careful extraction preserves the natural beauty of the stone for decorative and architectural applications. In contrast, shale, primarily used in construction materials like cement and bricks, is extracted using heavy machinery to break and remove large sections of rock, which are then crushed for processing NOW YOU KNOW!
Wakey Wakey: A Volcano Quiet for Centuries Can Still Erupt
A dormant volcano has not erupted in a long time but could again. It can reawaken when new magma rises into its plumbing, when gases build pressure in the chamber, or when tectonic movement opens fractures. Scientists watch for earthquakes, ground swelling and gas changes. Mount Pinatubo, quiet for about 500 years, erupted in 1991. The footage shows an erupting volcano.
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Did you know, dormant volcanoes, though seemingly inactive, can be reawakened by changes deep in the Earth's crust. When tectonic plates shift, it can create fractures or increase magma pressure beneath the surface, which could trigger volcanic activity. In some cases, new magma can rise through the existing volcanic pathways, renewing heat and pressure in previously dormant chambers. The buildup of gases within the magma is another critical factor. If pressure becomes too great, it can eventually force an eruption. Dormant volcanoes are closely monitored, as reactive complex and can occur with little depending on geological shifts and movements. NOW YOU KNOW!
Delta IV Heavy: The Delta IV Heavy Strapped Three Identical Cores Side by Side
The Delta IV Heavy, built by United Launch Alliance, used three Common Booster Cores burning liquid hydrogen and oxygen. It could lift about 28,800 kilograms to low Earth orbit or about 14,200 kilograms to geostationary transfer orbit, and launched spy satellites, the Orion test flight and the Parker Solar Probe. It first flew in 2004 and made its final flight on April 9, 2024. The footage shows a Delta IV Heavy launch.
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Did you know the Delta IV Heavy is a heavy lift launch vehicle developed by United Launch Alliance, ULA, primarily for deploying large payloads into space. It is one of the most powerful rockets currently in operation, featuring a unique configuration with three common core boosters, which provide increased thrust during liftoff. The rocket can carry payloads of over 28,000 kilograms, about 61,000 pounds, to geostationary transfer orbit, making it ideal for launching satellites, interplanetary missions, and national security payloads. NOW YOU KNOW!
A Little Crowded: Around Eid, Bangladeshi Trains Can Carry Passengers on Their Roofs
In Bangladesh, demand for rail travel peaks around holidays such as Eid, when many people return to their home districts. Trains become so crowded that passengers ride on roofs and cling to the outside, which is dangerous and officially discouraged. Bangladesh Railway has expanded services and enforcement to reduce it. The footage shows a train with passengers packed on its roof.
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Did you know? In parts of Bangladesh, trains often experience extreme overcrowding, especially during major festivals like Eid. During these times, passengers fill not only the interiors, but also cling to the exteriors and rooftops of trains, creating hazardous conditions. This phenomenon is driven by a high demand for travel and limited transportation options. Despite the risk, many individuals choose this mode of travel to reach their destinations. Efforts are ongoing to improve railway infrastructure and safety measures to address this issue. NOW YOU KNOW!
Water in the Desert: Water Poured on Desert Sand Can Vanish Almost Instantly
Desert sand is loose and porous, with large gaps between grains, so water infiltrates quickly. It sinks until it reaches less permeable layers such as clay or bedrock; some can recharge aquifers, though much evaporates in desert heat. The footage shows water rushing across sand and soaking in at the front.
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Did you know, when water moves quickly through desert sand, it typically infiltrates quickly. Due to the loose, porous structure of the sand, desert sand grains are often dry and widely spaced, allowing water to seep down rapidly until it reaches compacted layers or bedrock that block further penetration. In some cases, this water collects in underground reservoirs, known as aquifers, where it can stay for long periods, slowly replenishing groundwater. NOW YOU KNOW!
Gassy Accidents: Gas Tankers Carry Fuel Under Pressure or Deep Cold
Trucks carry natural gas either compressed (CNG) in high-pressure cylinders or liquefied (LNG) in insulated tanks at about minus 162 degrees Celsius. Tanks are built to withstand pressure and impacts, but collisions, equipment failures and leaks can release flammable gas that may ignite into fires or explosions. Regulations, maintenance and driver training reduce the risk. The footage shows a gas tanker fire and explosion.
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Did you know gas trucks which transport liquefied natural gas or compressed natural gas face explosion risks due to the highly flammable nature of the gases they carry. These trucks are built with specialized tanks designed to withstand high pressure and extreme temperatures but accidents can still occur from collisions, equipment failures or leaks. A ruptured leak can lead to the rapid release of gas which, if ignited, can cause explosions or fire. Strict safety regulations, rigorous maintenance, and trained personnel are crucial in mitigating these risks ensuring safe transportation of gas products while minimizing the potential for catastrophic incidents. NOW YOU KNOW!
Maeklong Market: Several Times a Day, a Train Rolls Straight Through This Market
The Maeklong Railway Market in Samut Songkhram Province, Thailand, sits on the tracks of the Maeklong Railway. When a train approaches, vendors fold their awnings and pull goods back from the rails; once it passes, they reopen within moments. The market sells fresh produce, seafood and local food and is a popular tourist stop. The footage shows a train passing through the market.
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Did you know, the Maeklong Railway Market, located in Samut Songkhram Province, Thailand, is renowned for its unique setup, where a train passes directly through the bustling market multiple times daily. Vendors swiftly retract their goods and awnings to allow the train to pass, then promptly resume their positions, creating a captivating spectacle for visitors. This market offers a variety of fresh produce, seafood, and local delicacies, providing an authentic glimpse into Thai culture and daily life. NOW YOU KNOW!
Urban Flood Control: Concrete and Asphalt Stop Rain From Soaking Into the Ground
Urban flooding happens when heavy rain overwhelms a city's drainage. Impermeable surfaces such as concrete, asphalt and rooftops keep water from soaking into the soil, so runoff rushes into storm drains faster than they can carry it. Cities respond with larger drains, retention basins, permeable pavement and green spaces. The footage shows floodwater surging through city streets.
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Urban flooding occurs when heavy rainfall overwhelms drainage systems in cities, causing water to accumulate on streets, sidewalks, and properties. This flooding [...] exacerbated by [...] proportion of impermeable surfaces in urban areas, such as concrete, asphalt, and rooftops which prevent water from naturally seeping into the ground. As a result, water flows rapidly into storm drains which may [...] the capacity to handle such large volumes, leading to overflow. NOW YOU KNOW!
Cotton Conveyors: Some Cotton Trucks Have Conveyor Beds That Load and Unload Modules
Cotton module trucks carry large compressed modules of seed cotton from fields to gins. Their beds have built-in chain conveyors and tilt, so they can pick up a module from the ground and slide it off at the gin, cutting manual labor and limiting contamination of the fiber. The footage shows trucks loading and unloading cotton modules.
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Did you know? Specialized truck bed conveyors for cotton transportation are designed to efficiently move large quantities of cotton from fields to processing facilities. These trucks are equipped with built-in conveyor belts in their beds, allowing for quick and controlled unloading of loose cotton bales or modules. The conveyor system reduces manual labor and minimizes cotton handling, preserving the quality of the cotton fibers and reducing contamination. By streamlining the loading and unloading process, these specialized trucks improve efficiency during harvest season, ensuring that cotton reaches processing facilities quickly and in optimal condition for further processing. NOW YOU KNOW!
Garbage Water: Floating Barriers Catch Trash in Canals Before It Reaches the Sea
Trash traps such as floating booms, trash racks and mesh screens are installed in rivers, canals, storm drains and outfalls to catch plastics and debris before they reach larger bodies of water. Racks block large items and finer screens catch smaller particles; the collected waste is removed by crews. The footage shows a floating boom collecting trash in an urban canal.
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Did you know? Water pollution and garbage filters are essential systems used to prevent waste, plastics, and contaminants from entering larger bodies of water. These filters can be installed in rivers, storm drains, and industrial outflows to capture debris and pollutants before they reach oceans, lakes, or reservoirs. Common types include trash racks, which block large debris, and finer mesh screens that capture smaller particles. NOW YOU KNOW!
Helicopter Chainsaws: A Helicopter Can Trim Trees With a Row of Spinning Saw Blades
Aerial saws are rigs of about ten circular saw blades on a long vertical boom hanging below a helicopter. Pilots fly them along power line corridors and roads to trim branches, especially in remote or rugged terrain where ground crews struggle. The Reel calls them chainsaws, but the blades are circular saws. The footage shows a helicopter trimming a tree line.
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Did you know, helicopters equipped with long vertical chainsaws are used for trimming and clearing trees near power lines, roads, and other infrastructure? These chainsaws consist of multiple spinning blades attached to a long pole, suspended below the helicopter. As the helicopter flies along the target area, the blades cut through branches and foliage, allowing for efficient trimming of hard-to-reach trees. This method is particularly useful in rough terrain or remote locations, where ground crews would struggle with access. NOW YOU KNOW!
Red Hot Calipers: Race Car Brakes Can Glow Red-Hot Under Hard Braking
Braking converts a car's kinetic energy into heat through friction between pads and rotors. In racing, repeated hard stops can heat rotors to well over 1,000 degrees Fahrenheit (about 540 degrees Celsius), hot enough to glow red or orange; much of the visible glow comes from the rotors, with heat soaking into the calipers. The footage, credited to NASCAR, shows glowing brakes on race cars.
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Did you know, brake calipers can glow red or orange from extreme heat, generated during heavy or prolonged braking. When brakes are applied, friction between the brake pads and the rotor produces intense heat, which is absorbed by the calipers. This effect is common in high-performance or racing vehicles, where frequent braking at high speeds generates temperatures that can exceed 1000 degrees Fahrenheit or 450 degrees Celsius. NOW YOU KNOW!
Firefighting Drones: Drones Can Spot Hidden Hotspots With Thermal Cameras
Firefighting drones are uncrewed aircraft that give crews aerial views, use infrared and thermal cameras to find hotspots and map fire spread, and in some designs spray water, foam or retardant through tethered hoses or onboard tanks. They are useful for high-rise buildings and rugged terrain. The footage shows a drone spraying water at a burning building.
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Did you know, firefighting drones are specialized unmanned aerial vehicles, or UAVs, designed to support firefighting operations by providing aerial views, monitoring hotspots, and even extinguishing flames in hard-to-reach areas, equipped with infrared and thermal imaging cameras. These drones help identify heat sources and map the spread of fires, giving ground crews critical information for effective containment. Some drones are fitted with nozzles or tanks to deliver fire retardants, water, or suppressant foam directly to small fires, particularly useful in high-rise buildings or rugged terrain where traditional firefighting methods are challenging. NOW YOU KNOW!
Towering Tower: East Pacific Center Tower A Rises About 306 Meters Over Shenzhen
East Pacific Center Tower A in Shenzhen, completed in 2013, is about 306 meters (1,004 feet) tall and contains apartments within a mixed-use complex. The Reel calls it China's tallest residential building; I attributed that ranking to the Reel. The tower is in Futian District. The footage shows the tower and the city skyline.
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Did you know the tallest residential building in China is the East Pacific Business Center Tower A located in Shenzhen's Nanzhen district. Completed in 2013, this skyscraper stands at 306 meters or 1,004 feet and serves as a prominent feature of the city skyline. The tower is part of a mixed-use complex that includes office spaces, commercial areas, and luxury apartments reflecting Shenzhen's rapid urban development and architectural innovation. NOW YOU KNOW!
Eggs, Anyone?: Some Mosquitoes Lay Eggs in Floating Rafts
Mosquitoes lay eggs in or near standing or slow-moving water, where larvae develop. Some genera, such as Culex, lay eggs in floating clusters called rafts, while others, like Aedes, lay eggs singly on damp surfaces where they can survive drying until flooded. Eggs often hatch within a few days. The footage shows a mosquito laying eggs on water.
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Did you know, mosquitoes lay eggs in stagnant or slow-moving water, which provides the necessary habitat for their larvae. Female mosquitoes typically lay their eggs in clusters, called rafts, on the surface of the water, although some species may deposit them directly onto moist soil or vegetation near water sources. The eggs are usually coated with a protective layer that helps prevent desiccation. Depending on the species and environmental conditions, the eggs can hatch into larvae within a few days to a week. NOW YOU KNOW!
Blue/Green: Copper Compounds Turn a Flame Blue-Green
When aluminum is added to copper sulfate solution with hydrochloric acid, the acid strips aluminum's oxide layer and aluminum displaces copper in a vigorous, heat-releasing reaction. Copper compounds give flames a characteristic blue-green color, because heat excites copper's electrons, which emit specific wavelengths as they relax. The footage shows the reaction and a green flame.
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Did you know, when copper sulfate, hydrogen chloride and aluminum are combined, a fascinating reaction can occur, producing a distinctive blue or green flame. Here's how it works. Aluminum reacts with copper sulfate, causing a redox reaction, where aluminum displaces copper, releasing copper metal and aluminum sulfate. When hydrogen chloride is present, it can intensify this reaction, especially if the solution is heated. Copper ions from the copper sulfate then release a blue-green flame when burned, because of the unique way copper's electrons are excited by heat. NOW YOU KNOW!
Thrust: At Liftoff, the Shuttle Stack Made About 7.8 Million Pounds of Thrust
NASA's Space Shuttle, flown from 1981 to 2011, launched on two solid rocket boosters and three main engines. The Reel puts total liftoff thrust at about 7.8 million pounds: about 6.6 million from the boosters and 1.2 million from the main engines. The boosters burned for about two minutes before separating. The footage shows rocket launch imagery.
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Did you know, to launch a space shuttle from the ground into the atmosphere, approximately 7.8 million pounds of thrust is required. This is achieved by a combination of two solid rocket boosters and three main engines. The solid rocket boosters provide the majority of the force, generating about 6.6 million pounds of thrust, while the shuttle's three main engines contribute an additional 1.2 million pounds. Together, these engines allow the shuttle to overcome Earth's gravity, pushing it through the atmosphere and reaching the necessary velocity for orbit. NOW YOU KNOW!
Earth Movers I: A Caterpillar 793F Hauls About 250 Short Tons per Load
The Caterpillar 793F is an off-highway haul truck for mining and large construction projects, with a payload class of about 250 short tons (roughly 227 metric tons). Its large diesel engine and heavy-duty frame let it carry rock and dirt over rough haul roads. The footage, credited to timothyrinehart, shows a 793F at work.
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Did you know, the Caterpillar 793F is a large off-highway truck designed for heavy mining and construction applications? It has a payload capacity of approximately 250 tons, 227 metric tons, for dirt and other materials. The truck features a robust design, powerful engine, and advanced hydraulic systems that enable it to transport substantial amounts of dirt efficiently over rough terrain, making it an essential vehicle in large-scale earth-moving operations. NOW YOU KNOW!
DANGEROUSLY Reactive: Aluminum Dropped in Liquid Bromine Bursts Into Flame
Aluminum reacts vigorously with liquid bromine, often after a short delay while the metal's oxide layer is breached. The highly exothermic reaction produces sparks, flames and fumes of aluminum bromide. Aluminum gives up electrons and bromine accepts them. The footage shows aluminum foil reacting in a dish of bromine.
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Did you know? The reaction between liquid bromine and solid aluminum is highly exothermic and produces intense heat and bright flames. When aluminum comes into contact with bromine, it quickly oxidizes, breaking apart the bromine molecules. The reaction releases aluminum bromide as a product, which forms a white smoke. This interaction can be dangerously reactive, as bromine is a volatile, corrosive liquid that readily accepts electrons, while aluminum is a highly reactive metal with a strong tendency to donate electrons. NOW YOU KNOW!
Woolly Monkeys: Woolly Monkeys Use Their Tails as a Fifth Limb
Woolly monkeys (genus Lagothrix) live in the rainforests of northwestern South America, including Colombia, Ecuador, Peru and Brazil. Their thick, woolly fur ranges from brown to black, and their prehensile tails grip branches like an extra hand. They eat mostly fruit plus leaves and insects, and live in social groups that the Reel puts at 10 to 30 animals. The footage shows woolly monkeys up close.
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Did you know, woolly monkeys are distinctive primates native to the tropical rainforests of South America, primarily found in countries like Colombia, Ecuador, and Peru. They are easily recognizable due to their long, thick fur that varies in color from brown to black, giving them a woolly appearance. Woolly monkeys possess prehensile tails, which act as an additional limb, aiding in their arboreal lifestyle as they navigate the canopy in search of fruit, leaves, and insects. These social animals live in groups, typically comprising 10-30 individuals, led by a dominant male. Their complex social structures are characterized by vocalizations and intricate grooming behaviors that help strengthen group bonds. NOW YOU KNOW!
Computer Wave Control: Computer-Timed Wave Makers Can Hold a Wave in Place
A standing wave forms when two waves of equal amplitude and frequency travel in opposite directions and interfere. Points that never move are nodes and points of maximum motion are antinodes. Computer-controlled wave generators in test tanks and wave pools can time their paddles precisely enough to build these patterns. The footage shows a pool with synchronized wave makers.
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Did you know, a perfect standing wave in a computer-controlled wave pool is created by precisely coordinating wave generation to achieve a stable interference pattern. This involves using multiple wave generators that are synchronized to produce waves of equal amplitude and frequency, which travel in opposite directions. When these waves meet, they interfere constructively and destructively, forming fixed nodes, or points of no movement, and antinodes, or points of maximum movement. The result is a standing wave that appears stationary, creating a controlled environment for various activities like surfing, research, or entertainment. NOW YOU KNOW!
The Hyperion Sled: In the 1960s, Engineer Philip Bono Proposed Launching a Rocket From a Sled
Philip Bono, an engineer at Douglas Aircraft, proposed Hyperion in the 1960s as a reusable single-stage launcher. It would ride a rocket-powered sled along a long track to gain speed horizontally, saving propellant before climbing to orbit. It was never built. The footage shows rocket sled tests and an animation of a launch.
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Philip Bono's Hyperion rocket sled from the 1960s was an ambitious concept designed to revolutionize space travel. The idea was to use a massive rocket sled to launch spacecraft horizontally at high speeds, reducing the amount of fuel needed for vertical lift offs. This sled, powered by rocket engines and running along a track, would accelerate a spacecraft to extreme velocities before it launched into orbit. The Hyperion rocket sled was an early step toward innovative space transportation ideas. NOW YOU KNOW!
To Bill a Mogging Bird: The Shoebill's Bill Can Be Nearly 24 Centimeters Long
The shoebill (Balaeniceps rex) is a large, stork-like wading bird of central and eastern African swamps, in countries including Uganda, Zambia, South Sudan and the Democratic Republic of the Congo. It is named for its huge, shoe-shaped bill, which the Reel puts at up to about 9.4 inches (24 cm). Shoebills stand very still before lunging at prey such as lungfish. The footage shows shoebills staring at the camera.
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Did you know, shoe bills are large, wading birds native to the swamps and wetlands of Central Africa, particularly in countries like Zambia, Uganda, and the Democratic Republic of the Congo. They are easily recognized by their strikingly large shoe-shaped bills, which can measure up to 9.4 inches long. NOW YOU KNOW!
Supercar Spitting: Supercar Exhausts Can Shoot Flames When Unburned Fuel Ignites
Flames from a car's exhaust come from unburned fuel igniting in the hot exhaust system. It happens most when a driver lifts off the throttle or shifts hard, and some performance cars and tunes deliberately add fuel or retard ignition timing to create pops, bangs and flames. The footage shows supercars shooting flames from their exhausts at night.
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Did you know, supercars spit fire, primarily due to unburned fuel, igniting in the exhaust system, a phenomenon that typically occurs during high performance driving. This happens when the engine is revved aggressively, often leading to incomplete combustion. When excess fuel enters the exhaust system, it can ignite due to the extremely high temperatures of the exhaust gases, particularly during rapid acceleration or deceleration. NOW YOU KNOW!
Propping Up the Coastline!: Mangrove Roots Slow Incoming Waves Before They Reach Shore
Mangroves grow along tropical and subtropical coasts. Their tangled above-ground prop roots and dense vegetation create friction that slows water and absorbs wave energy, reducing erosion and protecting shorelines and settlements from storm surge. The footage shows waves passing through a mangrove stand.
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Mangroves absorb waves through their complex root systems and dense vegetation, which provide natural barriers along coastlines. The above-ground roots known as prop roots extend into the water and create friction, slowing down wave energy. This helps to dissipate the force of incoming waves, reducing erosion and protecting shorelines. NOW YOU KNOW!
Cliffside Honey Heist: Honey Hunters Rappel Down Cliffs to Reach Wild Hives
In mountainous parts of China, Nepal and elsewhere in Asia, honey hunters harvest wild honeycombs from colonies on steep cliffs, often those of giant honeybees. The Reel describes the practice in Yunnan and Sichuan: climbers rappel or use ropes and ladders, then cut the comb with long poles. The honey is valued locally for its flavor. The footage shows climbers removing comb from a cliff hive.
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Did you know, cliffside beehive harvesting in China, particularly in the mountainous regions of Yunnan and Sichuan, involves traditional methods used by local beekeepers to collect honey from wild honeybee colonies that build hives on steep cliffs. This practice often requires skilled climbers who rappel down cliffs to access the hives. Harvesters use long sticks or ropes to gently extract the honeycomb, taking care not to harm the bees. The honey collected is often prized for its unique flavor and medicinal properties. NOW YOU KNOW!
The Harvest: A Harvester Never Stops; Trucks Drive Alongside to Catch the Crop
A combine harvester cuts crops such as wheat, corn and soybeans and separates grain from chaff, while forage harvesters chop whole plants. Trucks or tractor-drawn carts drive alongside, catching the crop from the spout so the harvester keeps working. Modern harvesters monitor yield as they go. The footage shows a harvester filling trucks in a field.
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Did you know, a crop harvester and collection truck are essential components in modern agriculture operations? The crop harvester, often referred to as a combine harvester, is a versatile machine designed to efficiently harvest crops like wheat, corn, and soybeans. It cuts the plants, separates the grains from the chaff, and prepares them for storage. Equipped with advanced technology, modern harvesters can monitor crop yields and optimize performance for efficiency. Once the crops are harvested, they're collected and transported by a collection truck, which is typically designed with a large capacity to carry bulk crops. NOW YOU KNOW!
Hyalophora cecropia: The Cecropia Moth Can Span About 6 Inches or More
The cecropia moth (Hyalophora cecropia) is North America's largest native moth, with a wingspan of up to about 6 inches (15 cm), sometimes more. It belongs to the family Saturniidae, the giant silk moths, and has reddish-brown wings banded in white, red and black. Adults have no functional mouthparts and live only a week or two on energy stored as caterpillars. The footage shows adult moths.
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Did you know, Hyalophora cecropia, also known as the cecropia moth, is the largest native moth in North America that can reach up to 7 inches. This moth belongs to the Saturniidae family and is notable for its vibrant reddish brown wings with bands of white, orange, and black. Cecropia moths have no functional mouth parts, meaning they cannot eat as adults. Instead, they rely on stored energy from their caterpillar stage and have a brief adult life. NOW YOU KNOW!
The Golden Ellipse: The Patek Philippe Golden Ellipse Dates to 1968
Patek Philippe introduced the Golden Ellipse watch in 1968, with a case shaped between an oval and a rectangle based on the golden ratio. The Reel describes making its bracelet: designers sketch it to suit the case, prototypes test fit, precious metal is cut into strips and formed into links, and the links are assembled so the bracelet flexes on the wrist. The footage shows metal links being shaped and assembled.
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Fabrication of the Patek Philippe Golden Ellipse bracelet is a meticulous process that begins with a careful selection of high-quality materials such as gold or platinum, known for their durability and aesthetic appeal. Designers create intricate designs [...] compliments the unique elongated oval shape of the watch. Prototypes are often produced to test for fit and comfort before moving to the next stage. The chosen metal is then cut and shaped into strips using specialized machinery or hand tools to form the individual links of the bracelet. These links are assembled with precision to allow flexibility and comfort on the wrist. NOW YOU KNOW!
Shatter & Collide: Spin a CD Fast Enough and It Bursts Apart
A spinning disc is stretched by rotational stress that grows with speed. Polycarbonate CDs are built for drive speeds up to roughly 10,000 rpm; beyond their limits, or when cracked, they can shatter violently, and fast CD-ROM drives occasionally broke damaged discs. Many drives cap speed partly for this reason. The footage shows a CD on a motor spinning until it shatters.
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Did you know, CD integrity failure at high speed occurs when a CD spins too fast, often beyond its design limits, which can lead to physical damage. As the speed increases, rotational forces put pressure on the CD, which can cause it to crack or even shatter. This is more likely with older or scratched CDs, as structural weaknesses make them less able to withstand the strain. High speed failures are rare with most consumer CD players, as they usually limit speed to safe levels. However, some high speed computer drives or industrial CD testing equipment can potentially cause integrity failures if not properly regulated. NOW YOU KNOW!
Mach Madness: Fast Jets Can Wrap Themselves in Sudden White Clouds
When a jet flies fast through humid air, air pressure and temperature drop over the wings and around the airframe, and water vapor condenses into a visible cloud, often called a vapor cone. It is common near the speed of sound but can form at subsonic speeds, and it is not itself the shock wave or proof of breaking the sound barrier. Engine contrails are a different effect. The footage shows fighter jets with vapor around the wings, often low over the sea.
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The white trails and shrouds seen at the edges of fighter jets, called vapor trails or contrails, form when the jet flies through humid air at high altitudes, near the speed of sound. As it moves, pressure around the wings drops, causing moisture to condense into ice crystals, creating visible trails. When traveling at or beyond the speed of sound, the jet can also produce a Mach cone, a visible shockwave from compressed air as it breaks the sound barrier. NOW YOU KNOW!
Sudsy: Soap Molecules Have One End That Loves Water and One That Loves Oil
Soap is made by saponification, reacting fats or oils with a strong base to make fatty acid salts and glycerol. Each soap molecule has a water-attracting head and an oil-attracting tail. In water the tails gather around grease and germs, forming micelles with the dirt inside, which rinse away. The footage shows microscope imagery.
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Did you know? Soap cleans by a process called saponification, which involves breaking down fats and oils into fatty acid salts and glycerol. When you wash with soap, its molecules form structures called micelles that trap germs in grease within their hydrophobic centers. Soap molecules have a hydrophilic or water-attracting head and a hydrophobic or water -repelling tail. The hydrophobic tail binds to the oils and germs, while the hydrophilic head sticks to the water, allowing the entire micelle to be washed away, effectively removing germs from surfaces and skin. NOW YOU KNOW!
Red Cat | Oil Rig: Copper Wire in Silver Nitrate Grows a Coat of Silver Crystals
When copper metal is placed in silver nitrate solution, copper atoms lose electrons and enter solution as copper(II) ions, turning it blue, while silver ions gain electrons and deposit as solid silver crystals. It is a single-displacement redox reaction. The title combines two mnemonics: "red cat" (reduction at the cathode) and "OIL RIG" (oxidation is loss, reduction is gain). The footage shows silver crystals growing on a copper coil.
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Did you know, in the reduction oxidation or redox reaction between copper and silver nitrate, copper metal reacts with silver nitrate solution to produce copper II nitrate and solid silver. Copper loses electrons and is oxidized to form copper II plus ions, while silver ions in the silver nitrate are reduced, as they gain electrons to form solid silver. This reaction showcases a single displacement where copper displaces silver from the solution. NOW YOU KNOW!
JUMP!: A Male Peacock Spider Courts With a Fan of Color and a Dance
Peacock spiders (genus Maratus) are tiny Australian jumping spiders, most only about 4 to 6 millimeters long. Males raise a brightly colored flap on the abdomen, like a peacock's tail, and court females with leg waves, vibrations and side-to-side steps. Females may attack males whose display fails to impress. The footage shows a male displaying.
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Did you know the jumping peacock spider is a tiny, yet vibrant species known for its striking colors and impressive courtship displays? Males of the species raise a brightly colored flap on their abdomen, much like a peacock's tail, and perform a unique dance to attract females. This dance includes rhythmic leg waves, abdomen vibrations, and intricate side-to-side movements. NOW YOU KNOW!
Leech Gourmet: Some Leeches Skip Blood and Hunt Earthworms Instead
Not all leeches drink blood. Some land and freshwater leeches are predators that hunt earthworms and other invertebrates, seizing prey and swallowing it whole or sucking out its fluids. The Reel names Haemadipsa picta, the tiger leech, which is usually described as a blood-feeder, so I attributed the species claim to the Reel. The footage shows a leech consuming an earthworm.
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Earthworm eating leeches like Haemadipsa picta are specialized predators that actively hunt and consume earthworms, rather than relying on blood meals. These leeches are equipped with strong jaws and specialized teeth that allow them to latch onto an earthworm and draw out bodily fluids. Some species even have digestive enzymes that help break down the worm's tissues, making it easier to ingest. Unlike the more familiar blood sucking leeches, these predators play an important ecological role by controlling earthworm populations and recycling nutrients back into the soil. NOW YOU KNOW!
A Step Up: Spiral Stairs in Castles Helped Defenders
Stairs began as steps cut into hillsides and rock. Romans built more elaborate stairs with stone and concrete; medieval castles used spiral staircases, which tradition says favored right-handed defenders; and Renaissance architects made grand decorative staircases. Steel and reinforced concrete later allowed floating and helical designs. The footage is a computer-generated sequence of staircases through the ages.
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Did you know, the evolution of stairs spans from basic, functional stone steps in ancient civilizations to today's intricate artistic designs. Early staircases were cut into hillsides or rock, later evolving with the Romans, who used concrete to build more elaborate structures. In medieval castles, spiral staircases provided a tactical advantage during battles, while the Renaissance saw the rise of grand, decorative staircases in public and private buildings. Modern materials like steel and concrete have transformed stairs into architectural statements, enabling innovative designs like floating or helical staircases, which blend form and function in unique ways. NOW YOU KNOW!
Boeing's Red Rain: A Converted 747 Could Drop up to 19,200 Gallons on a Wildfire
The 747 Supertanker was a Boeing 747 converted into an aerial firefighting tanker. It could carry up to 19,200 U.S. gallons of water or fire retardant, the largest load of any firefighting aircraft, and fought fires in the U.S., Chile, Israel and Bolivia. The last one, the Global SuperTanker, ended operations in 2021. The footage is a computer-generated animation of the jet dropping red retardant.
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Did you know? The Boeing 747 Super Tanker is a modified version of the iconic 747 aircraft. It's one of the largest aerial firefighting planes in the world, capable of carrying up to 19,200 gallons of water or fire retardant. This massive capacity allows it to make significant drops over large wildfires, providing crucial support to ground crews. NOW YOU KNOW!
Professional Capping: Crews Lower a Steel Dome Over a Burning Gas Leak
The Reel describes crews putting out gas fires by lowering a heat-resistant steel dome over the flames with heavy machinery, cutting off oxygen so the leak can then be capped or vented. Firefighting for wells and gas lines also uses water, chemicals and, for large well fires, explosives, before a cap is fitted. The footage shows a dome being lowered onto a fire.
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Did you know stopping gas line fires with domes involves placing a large heat resistant steel dome over the burning gas to suffocate the fire by cutting off its oxygen supply. These domes are designed to withstand intense heat and can be lowered onto the fire using cranes or other heavy machinery. Once the dome is in place, it traps the escaping gas, preventing it from fueling the flames while allowing workers to either cap the leak or vent the gas safely. NOW YOU KNOW!
Quantum Shenanigans: One Equation Tells How a Quantum System Changes Over Time
The Schrödinger equation, published by Erwin Schrödinger in 1926, is a central equation of quantum mechanics. It describes how a system's wave function evolves over time; the square of the wave function's magnitude gives the probability of finding a particle in a given place. The footage shows animations of waves and particles.
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Did you know, Schrodinger's equation is a fundamental equation in quantum mechanics that describes how the quantum state of a system evolves over time. It accounts for the probabilistic nature of particles at the quantum level, offering a wave function that defines the probability distribution of a particle's position and momentum. NOW YOU KNOW!
Count It Up: Rollers Pull Each Bill Past Sensors at High Speed
A banknote counter feeds bills one at a time through rollers past sensors that register each note, and many measure size or thickness to catch doubles. Higher-end models check ultraviolet and magnetic features to flag counterfeits and can sort mixed denominations. Machines like these count hundreds to more than a thousand notes a minute. The footage shows a counter riffling through a stack of bills.
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Did you know? Automatic money counters use rollers by feeding bills into the machine, where the rollers guide them through a series of sensors. These sensors detect the bill's size, thickness, and sometimes even its authenticity. The rollers quickly pull each bill through at high speeds, allowing the machine to tally the number of bills accurately. Some advanced models also scan for counterfeit bills using UV or magnetic sensors. The machine's precision and speed make it ideal for businesses handling large amounts of cash, significantly speeding up the counting process. NOW YOU KNOW!
Slime Talk: A Slime Mold Has No Brain, yet It Can Find the Shortest Path Through a Maze
Slime molds are neither fungi nor animals; most are amoeba-like organisms. Some live as single cells that gather into a multicellular mass when food runs short, while others, such as Physarum polycephalum, grow as one giant cell with many nuclei. In a 2000 experiment, Toshiyuki Nakagaki and colleagues showed that Physarum could find the shortest route through a maze to food. The footage, credited to the BBC, shows yellow slime molds spreading.
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Did you know, slime molds are incredible organisms that challenge the boundaries between fungi and animals. They typically exist as single cells, but when food is scarce, these cells aggregate into a multicellular mass. Despite lacking a brain, slime molds can solve complex problems, like navigating mazes or finding the shortest path to food. They move by extending pseudopods, or false feet, and feed on decaying matter and microorganisms. NOW YOU KNOW!
Smelly Smell That Smells Smelly: Bromine Is One of Only Two Elements That Are Liquid at Room Temperature
Bromine is a reddish-brown liquid halogen that evaporates readily into a choking, foul-smelling vapor; its name comes from the Greek for stench. The vapor irritates the eyes and airways and can damage the lungs, and liquid bromine causes painful skin burns. It must be handled in well-ventilated spaces with protective gear. The footage, from NileRed, shows bromine being handled in the lab.
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Did you know, bromine is a highly corrosive and toxic chemical element, especially in its vapor form. Its vapors are reddish brown and can severely irritate the respiratory system, causing coughing, difficulty breathing, and potential damage to lung tissue if inhaled in large amounts. Skin contact with liquid bromine can cause painful burns, while eye exposure can lead to severe irritation or even blindness. Long-term exposure to bromine vapors can affect the central nervous system, and accidental ingestion is extremely dangerous. Due to its reactivity and corrosiveness, bromine must be handled with extreme care in well-ventilated areas and with proper protective gear. NOW YOU KNOW!
Anatomy of a Combustion Engine: A Car Engine Runs on Thousands of Tiny Explosions a Minute
In a four-stroke internal combustion engine, a piston draws in fuel and air, compresses it, and in gasoline engines a spark plug ignites it; diesel engines ignite the mixture by compression alone. The expanding gas pushes the piston down, turning the crankshaft, and the exhaust stroke clears the cylinder. The footage shows cutaway views of an engine and ignition in slow motion.
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Did you know, combustion engines work by burning fuel to produce mechanical energy. Inside the engine, a mixture of fuel and air is compressed in a cylinder. A spark plug ignites the mixture, causing a small explosion, which pushes the piston down. This movement turns the crankshaft, converting the energy from the explosion into rotational force. The process repeats rapidly, producing the power that drives the vehicle. Combustion engines typically run on gasoline or diesel, and rely on a cycle of intake, compression, combustion, and exhaust to keep functioning. NOW YOU KNOW!
Embryonic Development: Every Embryo Starts as a Single Fertilized Cell
Embryonic development begins with a zygote, a single fertilized cell, which divides rapidly in a process called cleavage. In mammals the cells form a blastocyst that implants in the uterus. Cells then differentiate into tissues and organs, the basic body plan is laid down, and the nervous system, heart and limbs form under tight genetic control. The footage shows microscope views of a dividing embryo.
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Embryonic development begins with a single fertilized cell called a zygote. This cell undergoes rapid division through a process known as cleavage, creating a cluster of cells. These cells continue to multiply and eventually form a blastocyst, which implants in the uterus. From there, differentiation starts. Cells begin specializing into various tissues and organs through a tightly regulated process. As development continues, the basic body plan is established, with the formation of the nervous system, heart, limbs, and other vital structures. The complexity of development, driven by genetic and molecular signals, ultimately leads to the formation of a fully formed [...]. NOW YOU KNOW!
See Right Through Me: Pyrex Dipped in Vegetable Oil Seems to Disappear
Borosilicate glass such as Pyrex has a refractive index of about 1.47, close to that of many vegetable oils. When the glass is submerged, light passes from oil to glass with almost no bending or reflection, so the edges our eyes use to see the glass nearly vanish. The footage shows Pyrex objects disappearing as they are lowered into oil.
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Pyrex glass can appear to disappear when submerged in vegetable oil, because both materials have very similar refractive indices, meaning they bend light in nearly the same way. Light passes through the Pyrex and the oil without much distortion, making the glass nearly invisible to the naked eye. This effect occurs because our eyes rely on the bending of light to detect the edges of objects, and when their refractive indices match closely, those edges become difficult to distinguish. NOW YOU KNOW!
Coal World: Loaded Coal Trains Pass Under Spray Stations That Seal the Load
Coal dust blowing from loaded rail cars and stockpiles is a health, safety and maintenance problem. Railroads and mines use spray stations that coat coal with water or chemical binding agents, often called toppers, as trains roll through, forming a crust that reduces dust. Dust control also lowers the risk of coal-dust fires and explosions in enclosed spaces. The footage, credited to BNSF Railway, shows coal trains passing through a spray station.
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Did you know? Coal respray stations are designed to mitigate the dust generated during coal transport and processing. These stations spray water or chemical solutions over coal piles, conveyors, and loading areas to suppress airborne coal dust. The respray system often uses fine mist to ensure maximum surface coverage without overwetting the coal, which could affect its quality. This dust suppression is critical for reducing health risks to workers, improving air quality, and preventing potential hazards such as explosions, which can occur when coal dust accumulates in confined spaces. These stations are crucial for safety and environmental compliance in coal operations. NOW YOU KNOW!
Nuclear Shadows: The Atomic Bombings of August 1945 Left Shadows Burned Onto Surfaces
When the United States dropped atomic bombs on Hiroshima on August 6, 1945, and Nagasaki on August 9, 1945, the intense flash of thermal radiation bleached and scorched exposed surfaces. Where a person or object blocked the flash, the surface behind stayed darker, leaving a shadow-like outline. Some of these shadows, on steps, walls and pavements, are preserved; the best known is on the steps of a Hiroshima bank. The footage shows such shadows and a re-enactment of how they form.
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Radiation shadows, also known as nuclear shadows, occur during a nuclear explosion when an object or person blocks the intense radiation and heat emitted from the blast. Everything exposed to this heat is vaporized or scorched but the blocked areas remain relatively unaffected, creating a shadow-like imprint on surfaces. These eerie outlines were notably observed in Hiroshima and Nagasaki after the atomic bombings, where people and objects left their marks on walls and pavements, immortalizing the moment of the explosion. NOW YOU KNOW!
The Secret of Compact Disks: A CD Stores Data as Microscopic Pits and Flat Lands
A compact disc stores digital data along a spiral track of microscopic pits and flat areas called lands. A laser in the player shines on the track, and a sensor detects changes in the reflected light. In the CD format, each transition between a pit and a land represents a 1, and stretches without a transition represent 0s. The footage shows close-ups of a disc surface and its pits.
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Did you know, CDs store data using binary code, which consists of a series of 1s and 0s. The disk surface contains microscopic pits and flat areas known as lands. A laser in the CD player reads these pits and lands by reflecting light off the surface. lands reflect light back to a sensor, representing a 1, while pits scatter the light, representing a 0. This binary data is then converted into readable information. The arrangement of pits and lands encodes vast amounts of data in a compact and durable form. NOW YOU KNOW!
Squaring the Circle: No Number of Cubes Makes a Perfectly Smooth Sphere
A sphere built from cubes, like a voxel model, can only approximate the curve: flat faces and square edges never match a continuous surface. Using more, smaller cubes makes the shape smoother, but some stair-stepping always remains. The title echoes the classic problem of squaring the circle with compass and straightedge, which Ferdinand von Lindemann proved impossible in 1882. The footage is an animation of block spheres with ever smaller cubes.
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Did you know, creating a perfectly smooth sphere from square blocks is mathematically impossible because square blocks have flat, straight edges, while a sphere has a continuous curved surface. No matter how many blocks are used, the flat surfaces of the block will never fully conform to the smooth, rounded surface of a true sphere. However, by increasing the number of smaller blocks, you can more closely approximate the shape of a sphere, with the curvature becoming smoother as more blocks are added. Despite this, some angularity will always remain, due to the inherent shape of the square blocks. NOW YOU KNOW!
The Googol Gears: Each Gear Turns Ten Times Slower Than the One Before It
A googol is 1 followed by 100 zeros. Daniel de Bruin built a gear machine to make that number tangible: a chain of 100 gear stages, each reducing speed by a factor of ten, driven by a hand crank. The first gear spins freely, but the final gear would need a googol turns of the crank to rotate once, far longer than the age of the universe at any practical speed. The footage shows the long row of gears.
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Did you know, Daniel de Bruin's googol Gear System is an extraordinary mechanical creation designed to visualize the enormous number of googol, which is one followed by 100 zeros. The system consists of a vast array of interconnected gears, with each one turning more slowly than the previous one. It starts with a hand-crank gear, and as the motion transfers through the series, the final gear would take an almost incomprehensible amount of time to complete a single rotation, longer than the lifespan of the universe. This system is a striking demonstration of scale, time, and the intricacies of mechanical motion. NOW YOU KNOW!
Preserve Your Bubbles: In Deep Cold, a Soap Bubble Can Freeze Into a Crystal Shell
When a soap bubble is blown in air well below freezing, the thin water film begins to freeze. Ice crystals form and spread across the surface in branching patterns, swirled by currents in the film, until the bubble becomes a fragile frozen shell. Very low temperatures help the whole bubble freeze before it pops. The footage shows bubbles freezing outdoors on a snowy day.
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Did you know, when soap bubbles freeze, the process begins as the outer layer of water in the bubble starts to crystallize due to the cold temperature. As the air inside the bubble is warmer than the surrounding environment, the freezing typically starts at the bubble's thinnest points. Ice crystals form in intricate patterns and spread across the surface, creating a delicate frozen shell. The soap film helps to slow the freezing process, allowing you to observe the crystallization as it moves through the bubble. If the temperature is low enough, the entire bubble can freeze solid before popping. NOW YOU KNOW!
Solid Snake: The Western Bush Viper Hides in Leaves High Above the Forest Floor
The western bush viper (Atheris chlorechis) is a small, tree-dwelling viper of West African rainforests. Its green to yellowish scales camouflage it among leaves, and adults usually measure about 50 to 70 centimeters (20 to 28 inches). Its venom causes pain, swelling and tissue damage; bites to humans are rare but need medical care. The footage shows a green bush viper on branches.
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Did you know, the Western bush viper is a venomous snake found in the rainforests of West Africa? These small, arboreal vipers are known for their vibrant green, yellow, or brown scales, which help them blend seamlessly into their leafy surroundings. Despite their relatively small size, typically reaching 18 to 24 inches in length, they possess potent venom that can cause severe pain, swelling, and tissue damage in their prey. While they are not aggressive, their bites can be dangerous to humans, requiring immediate medical attention. NOW YOU KNOW!
Ectogenesis: Artificial Wombs Are Being Tested to Help Extremely Premature Babies
Ectogenesis means growing an embryo or fetus outside the body. Research focuses on artificial wombs for extremely premature babies: in 2017 a Philadelphia team kept premature lambs alive for weeks in a fluid-filled 'biobag' that supplied oxygen and nutrients. No artificial womb has been used for human babies as of the Reel's posting. The footage, with rows of pods, comes from EctoLife, a 2022 concept video by Hashem Al-Ghaili; it is not a real facility.
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Did you know, artificial wombs, also known as ectogenesis, are a developing technology aimed at growing embryos or fetuses outside the human body? This concept could revolutionize neonatal care, particularly for premature babies. By providing a controlled environment that simulates the conditions inside the womb, artificial wombs use biobags or fluid-filled incubators to nourish and support the fetus, mimicking the amniotic sac. They aim to provide a steady supply of nutrients and oxygen, while also allowing waste removal, replicating the natural processes of pregnancy. NOW YOU KNOW!
Dredging Up the...Ground?: Dredgers Suck Sediment From the Seabed and Can Build New Land
Dredging ships remove sediment and debris from the bottoms of rivers, harbors and seas. They keep waterways navigable, deepen shipping channels and can reclaim land from the sea. They work with suction pipes, mechanical buckets or cutter heads. The footage shows a dredger's hopper and land reclamation; the on-screen credit is Eko Atlantic, a city being built on reclaimed land in Lagos, Nigeria.
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Did you know? Dredging ships are specialized vessels designed to excavate and remove sediment, debris, or other materials from the bottom of bodies of water, such as rivers, harbors, and oceans. These ships play a crucial role in maintaining navigable waterways, deepening channels for shipping, and even reclaiming land from the sea. They operate by using large suction pipes, mechanical buckets, or cutting devices to lift sediment and debris from the seabed. NOW YOU KNOW!
They Don't Age!: A Hydra Can Regrow a Whole Body From a Small Piece
Hydras are freshwater animals a few millimeters long, with a tubular body and a mouth ringed by stinging tentacles that catch tiny prey. They can regenerate a whole body from a small fragment. Studies of Hydra vulgaris found that its death rate does not rise with age, so it shows no measurable aging, which makes it a model for research on regeneration and longevity. The footage shows a hydra under a microscope.
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Did you know? Hydras are tiny, freshwater organisms known for their simple tubular bodies and remarkable regenerative abilities, despite their small size, typically just a few millimeters long. Hydras are fascinating because they can regenerate entire bodies from just a small fragment of tissue. They have a central mouth, surrounded by tentacles that they use to capture prey, like small aquatic creatures. Hydras are also intriguing to scientists because they don't seem to age, showing no signs of the usual aging process, making them a key subject in studies of regeneration and longevity. NOW YOU KNOW!
The Hills Have Lungs: In Strong Winds, a Forest Floor Can Rise and Fall Like a Chest
In very strong winds, trees sway hard enough that their shallow root plates lift and drop, raising and lowering the soil and moss on top of them. On video the forest floor seems to breathe. The motion is a sign of stress that can end in a tree being uprooted. The footage shows a forest floor heaving during a windstorm.
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In extreme wind conditions, powerful gusts can lift and shift the ground around tree roots, creating an eerie visual effect where the earth seems to rise and fall as if it's breathing. This happens because the wind exerts such force on the trees that their roots are pulled upward, displacing the soil around them. The trees bend and sway, and as they do, the ground around them lifts and settles back down. NOW YOU KNOW!
Synthetic Conception: In IVF, an Egg Is Fertilized in a Lab Dish
In vitro fertilization (IVF) fertilizes an egg with sperm outside the body. The ovaries are stimulated to produce several eggs, which are collected in a minor procedure and combined with sperm in the lab, sometimes by injecting a single sperm into the egg. Embryos are grown for a few days, and one or more are transferred to the uterus. The first IVF baby, Louise Brown, was born on July 25, 1978, and more than 10 million babies have since been born through IVF. The footage shows microscope views of eggs, sperm and early embryos.
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Did you know, in vitro fertilization, or IVF, is a process where an egg is fertilized by sperm outside the body, typically in a laboratory. The process begins with stimulating a woman's ovaries to produce multiple eggs, which are then retrieved surgically. The eggs are combined with sperm in a petri dish to facilitate fertilization. Once fertilized, embryos are monitored for a few days, and one or more healthy embryos are selected for transfer back into the woman's uterus, where they may implant and develop into a pregnancy. IVF is a common treatment for infertility and has helped millions of people conceive. NOW YOU KNOW!
The Strings of Fate: Some Versions of String Theory Need 10 or 11 Dimensions
String theory proposes that particles are tiny vibrating strings. Superstring theories require 10 spacetime dimensions, and M-theory, which links them, requires 11. Beyond the three dimensions of space and one of time, the extra dimensions are thought to be compactified, curled up at scales far too small to detect. String theory remains untested by experiment. The footage is an animated tesseract and other higher-dimensional shapes.
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Did you know? String Theory, particularly in its most advanced forms, proposes that the universe is composed of 11 dimensions. In this framework, the familiar 3 dimensions of space and 1 of time are just the start. The additional 7 dimensions are more abstract and compactified, meaning they are curled up at scales so small that they are imperceptible to our senses and current technology. These extra dimensions are crucial for the mathematics of String Theory. NOW YOU KNOW!
To Break the Ice: Icebreakers Ride up Onto the Ice and Crush It With Their Weight
Icebreakers are ships built to clear paths through sea ice. Their sloped, reinforced bows let them ride up onto the ice so the ship's weight breaks it, and strengthened hulls protect them from damage. They keep polar shipping routes and research expeditions moving. The footage shows a red-hulled icebreaker pushing through pack ice.
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Did you know, icebreaker ships are equipped with specially designed icebreaker bulbs at the bow to help them navigate through icy waters? These bulbs, often referred to as icebreaking or ice horns, are reinforced extensions of the hull that allow the ship to push up onto thick ice sheets, breaking them under the vessel's weight. The bulb's rounded shape also helps reduce resistance by cutting through ice more efficiently, protecting the ship's hull from damage. This design is critical for polar expeditions and shipping routes in icy conditions, ensuring that essential supplies and research missions can continue, even in harsh, frozen environments. NOW YOU KNOW!
Sharpening Your Mind: The First Pencil Sharpener Was Patented in France in 1828
Before sharpeners, pencils were whittled with knives. The French mathematician Bernard Lassimone patented a pencil sharpener in 1828, and many hand-operated designs followed in the 19th century. Rotary sharpeners use gear-driven helical cutters that turn around the pencil, giving a long, even point. The footage shows an old mechanical sharpener being restored and tested.
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Did you know? Mechanical pencil sharpeners have evolved notably over time. Initially, these were simple hand-operated devices made from metal, where users manually twisted the pencil to sharpen it against a blade. The earliest designs, patented in the 19th century, featured a basic mechanism with a fixed blade and a cylindrical barrel to hold the pencil. In the 20th century, sharpeners improved with more refined mechanisms, including adjustable blades and various ergonomic designs. Innovations such as rotary sharpeners introduced a gear-driven system, allowing for more sharpening. Today's manual sharpeners often incorporate advanced materials and precision engineering for enhanced durability and performance. NOW YOU KNOW!
Glacial Waterfalls: Meltwater Can Pour off a Glacier's Edge as a Waterfall
Glacial waterfalls form where meltwater from a glacier flows over a cliff or the ice edge. In warm seasons, faster melting makes the falls bigger. Meltwater carries fine ground rock, called rock flour, which gives it a milky look. The footage shows a meltwater river cutting across an ice sheet and pouring over an ice cliff.
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Did you know, glacial waterfalls are a breathtaking natural phenomenon found in cold, mountainous regions where glaciers are present. These waterfalls form when melting ice from a glacier flows over the edge of a cliff or steep slope, cascading down as liquid water. As temperatures rise during warmer seasons, the melting rate of the glacier increases, leading to more substantial and dramatic water flow. Glacial waterfalls often carry sediment and fine rock particles, giving the water a milky or cloudy appearance. NOW YOU KNOW!
Your Heart in a Glass: Heart Muscle Cells Can Beat on Their Own in a Dish
Cardiomyocytes are the muscle cells of the heart. They can generate and conduct electrical impulses, and their myofibrils of actin and myosin let them contract. Neighboring cells are joined by intercalated discs, which pass electrical signals quickly so the heart contracts together. Lab-grown cardiomyocytes can beat by themselves in a dish. The footage shows beating heart cells under a microscope.
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Did you know, cardiac cells, also known as cardiomyocytes, are the specialized muscle cells that make up the heart's tissue and are responsible for its contraction and rhythmic beating? These cells are unique in their structure and function, as they are capable of generating and conducting electrical impulses that coordinate heartbeats. Cardiac cells contain myofibrils, which are composed of actin and myosin filaments, enabling them to contract and pump blood efficiently. They are interconnected by structures called intercalated discs, which facilitate the rapid transmission of electrical signals and synchronize heart contractions. NOW YOU KNOW!
Toxic Phosphorus: White Phosphorus Can Catch Fire on Its Own in Air
White phosphorus is a waxy, toxic form of the element that can ignite spontaneously in air at around 30 °C (86 °F). It burns with a bright flame and gives off dense white smoke of phosphorus pentoxide, so it is stored under water. It is used to make phosphoric acid and other chemicals, and militaries have used it in smoke and incendiary munitions, a use regulated by international law. Contact causes severe burns. The footage shows the chemist from Nile Red handling and burning it.
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Did you know, white phosphorus is a highly reactive, waxy substance that ignites spontaneously in air at around 30 degrees Celsius or 86 degrees Fahrenheit. It's used in various applications, including military munitions and the production of fertilizers. White phosphorus burns with a bright, intense flame and produces a dense, white smoke of phosphorus pentoxide. It is stored underwater or in inert gases to prevent it from reacting with air. Due to its highly toxic nature, it must be handled with extreme caution, as exposure can cause severe burns and other health hazards. NOW YOU KNOW!
"Writing" Life: RNA Polymerase Copies a Gene Into Messenger RNA
Transcription copies the information in a gene into RNA. In the nucleus, the enzyme RNA polymerase binds to a promoter, unwinds the DNA and reads one strand as a template to build a complementary messenger RNA (mRNA). The finished mRNA is processed and exported to the cytoplasm, where ribosomes translate it into protein. The footage is a molecular animation of transcription.
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Did you know DNA transcription is the process by which the genetic information stored in DNA is copied into a complementary RNA strand? This occurs in the cell nucleus, where an enzyme called RNA polymerase binds to a specific region of the DNA known as the promoter. The enzyme then unwinds the DNA helix and reads one strand of the DNA to synthesize a messenger RNA, or mRNA molecule. The sequence of bases in the DNA is used as a template, ensuring that the mRNA is an exact, complementary copy of the DNA's coding sequence. Once the mRNA strand is completed, it detaches from the DNA and exits the nucleus, moving to the cytoplasm, where it will be translated into a protein by ribosomes. NOW YOU KNOW!
Advanced Bicycle Riding: Urban Riders Treat Stairs, Rails and Ledges as a Course
Urban riding uses city features such as stairs, railings, ledges and benches for tricks, jumps and technical lines. It draws on mountain bike trials and BMX street riding and is known for self-expression. The footage is a rider's point-of-view clip descending long outdoor staircases.
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Did you know? Urban sport biking is all about agility, speed, and creativity in the city environments. Riders use their bikes to perform tricks, stunts, and jumps on urban features like stairs, railings, ledges, and benches. This sport combines the thrill of navigating challenging obstacles with the artistry of executing complex maneuvers, often in the heart of bustling cityscapes. Urban sport biking is known for its emphasis on self-expression and pushing boundaries, making it a popular choice among thrill-seekers and those looking to explore their environment in unconventional ways. NOW YOU KNOW!
Leaf Home in the Sky: Male Baya Weavers Weave Hanging Nests From Grass Strips
Baya weavers are small, sociable birds of South and Southeast Asia. Males weave hanging, retort-shaped nests from strips of grass and palm leaves, often building several to attract females. The nests hang from branches and have a long, downward-facing entrance tube that helps keep predators out. The footage shows baya weavers at their nests.
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Did you know, baya weavers are small, gregarious birds known for their incredible nest-building skills. Found across South and Southeast Asia, these birds create intricate, hanging nests from grasses and leaves, weaving them together using their beaks. The nests, often hanging from tree branches, have a distinctive bottle shape, with a long vertical entrance to protect against predators. Male baya weavers are responsible for constructing these nests, often building multiple to attract females. NOW YOU KNOW!
Underwater Angels: Sea Angels Are Snails That Swim With Wing-Like Flaps
Sea angels (order Gymnosomata, part of the pteropods) are small, shell-less marine snails. Their translucent, gelatinous bodies carry two wing-like flaps that they beat to swim. They live in cold seas, from the surface to deeper water, and feed mainly on shelled pteropods called sea butterflies. The footage shows sea angels swimming.
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Sea angels are small marine gastropods that belong to Pteropoda. These creatures are translucent, known for their gelatinous bodies and wing-like flaps that resemble angel wings, which they use for swimming. They inhabit cold, deep ocean waters and feed on tiny planktonic organisms. Sea angels are [...] unique appearance and behavior, [...] method of locomotion and their role in the marine food web. Their delicate, ethereal beauty and fascinating adaptations [...] subject of interest in marine biology. NOW YOU KNOW!
Bacteria Hunters: Bacteriophages Are Viruses That Only Infect Bacteria
Bacteriophages, or phages, are viruses that infect bacteria. A phage attaches to a bacterium and injects its genetic material, hijacking the cell to make new phages. Enzymes then break down the cell wall, the bacterium bursts and the new phages are released. Because they destroy bacteria this way, phages are studied as a possible antibacterial therapy, called phage therapy. The footage is an animation of phages attacking a bacterium.
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Bacteriophages, or phages, are viruses that specifically infect bacteria. They attach to a bacterium, inject their genetic material, and hijack the bacterial machinery to produce new phages. As new phages accumulate, they release enzymes that break down the bacterial cell wall, causing the bacterium to burst and release the new phages. This cycle effectively destroys bacteria from the inside out, making phages a potential tool for antibacterial therapy. NOW YOU KNOW!
Flaming Jellies: The Flame Jellyfish Is Named for Its Fiery Reddish-Brown Color
The flame jellyfish (Rhopilema esculentum) is a large jellyfish of coastal waters off China, Korea and Japan. Its bell is translucent with a reddish-brown tint, and it trails tentacles armed with stinging cells to catch plankton. It is not considered seriously dangerous to people and is harvested as food in East Asia. The footage shows flame jellyfish swimming.
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Did you know, the flame jellyfish is a visually striking species found in the tropical and subtropical waters of the Pacific Ocean? Its bell is transparent, with a unique reddish-brown hue, and is dotted with bioluminescent spots that resemble glowing flames. This jellyfish has long, delicate tentacles that trail behind it and are equipped with stinging cells for capturing prey. Unlike many other jellyfish, flame jellyfish are not considered dangerous to humans. Their distinctive appearance and bioluminescence make them a fascinating subject of study in marine biology. NOW YOU KNOW!
Microscopic Extremophiles: Tardigrades Can Survive the Vacuum of Space
Tardigrades, also called water bears or moss piglets, are microscopic animals usually about 0.3 to 0.5 millimeters long. In a dried-out state they can survive extreme heat and cold, radiation and even the vacuum of space. They do this through cryptobiosis, losing almost all their water and slowing their metabolism to nearly undetectable levels. The footage shows tardigrades under a microscope.
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Tardigrades, often called water bears or moss piglets, are microscopic creatures known for their incredible resilience. Measuring only about 0.3 to 0.5 millimeters long, these tiny organisms can survive extreme conditions that would be fatal to most lifeforms, such as intense heat, freezing temperatures, radiation and even the vacuum of space. Tardigrades achieve this by entering a state called cryptobiosis, in which they lose almost all of their water content and slow down their metabolism to nearly undetectable levels! NOW YOU KNOW!
A REEL Deep Dive: A Female Anglerfish Carries Her Own Glowing Fishing Rod
Female deep-sea anglerfish have a bioluminescent lure, called an esca, on a modified dorsal fin spine that extends over the head. The glow attracts prey in the dark depths. When prey comes close, the anglerfish opens its large, hinged jaw and swallows it whole in an instant. The footage shows an anglerfish on the seafloor.
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Female anglerfish possess a bioluminescent lure that extends from a modified dorsal spine on their heads. This glowing fishing rod attracts prey in the pitch black depths where the anglerfish lives. When the prey is close enough, the anglerfish opens its large, hinged jaw with lightning speed, engulfing its meal whole. NOW YOU KNOW!
A Prison for Your Mind: A Prison Sentence Served Inside a Headset Is Only a Concept so Far
As of 2024, virtual prisons are a speculative idea, not a system any prison uses. The footage comes from 'Cognify', a concept video that Berlin-based filmmaker and science communicator Hashem Al-Ghaili posted on June 24, 2024. His concept goes further than the Reel's VR headsets: it imagines AI-generated artificial memories implanted into a prisoner's brain so that years of rehabilitation could be experienced in minutes, including seeing a crime from the victim's perspective. Al-Ghaili told Dazed he was motivated by problems such as overcrowding, false imprisonment and ineffective rehabilitation. Snopes reported in 2025 that no such technology exists; implanting false memories has only been shown in a basic form in mice. Commentators also raised ethical concerns about consent and the collection of prisoners' brain data. The footage shows a person in a headset strapped to a chair, with computer-generated scenes.
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DID YOU KNOW? Virtual prisons are a conceptual form of incarceration that leverages advanced technology such as virtual reality and augmented reality to create immersive environments where inmates can serve their sentences without physical confinement in traditional prisons. Inmates would wear VR headsets that immerse them in controlled settings where their movements and activities are monitored and restricted. This virtual setup could simulate isolation or other prison experiences while offering rehabilitation programs like education, therapy and job training. NOW YOU KNOW!
Getting to the (Ball)Point: A Ballpoint Writes With a Tiny Rolling Ball
A ballpoint pen dispenses thick, oil-based ink over a hard ball, usually steel, brass or tungsten carbide, seated in a socket at the tip. As the ball rolls across the paper, it picks up ink from the reservoir on one side and lays it down on the other, while also acting as a cap that keeps the ink inside from drying out. John J. Loud patented a ballpoint on October 30, 1888, for marking leather, but it was too coarse for letters. Hungarian newspaper editor László Bíró, noticing that newspaper ink dried fast and didn't smudge, developed a pen with viscous ink and filed for a British patent on June 15, 1938. He and his brother György later moved to Argentina, where their pens went on sale. The footage shows close-ups of pen tips, the ball and a pen being machined.
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DID YOU KNOW? Ballpoint pens work through a simple yet efficient mechanism. Inside the pen there's a small metal ball usually made of brass, steel or tungsten carbide. Seated at the tip of the pen, this ball rotates freely in its socket acting as a buffer between the ink reservoir and the writing surface. As you press the pen to paper and move it, the ball turns picking up ink from the reservoir and depositing it onto the paper in a smooth controlled manner. The ink used is oil based which prevents it from smudging and allows for quick drying. NOW YOU KNOW!
Knuckle Coupling: Push Two Freight Cars Together and They Lock Themselves
The knuckle coupler, originally the Janney coupler, was patented by Eli H. Janney, a Confederate veteran of the American Civil War, in US patent 138,405 on April 29, 1873. Each coupler has a hinged knuckle; when two cars are pushed together, the knuckles swing closed and lock automatically, and a lever lets workers uncouple without stepping between the cars. Before that, link-and-pin couplers required a worker to stand between moving cars to drop a pin, and injuries were common. The Safety Appliance Act of 1893 required automatic couplers on US railroads. Railroads standardized on Janney's mating profile, and coupling accidents fell from 11,710 in 1893 to 2,256 in 1902 even as the workforce grew. Knuckle couplers remain standard in North America. The footage shows a coupler's knuckle opening and closing in close-up.
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DID YOU KNOW? The knuckle coupler is a crucial component in modern railway systems particularly in North America. It consists of two interlocking jaws or "knuckles" that automatically engage when train cars are pushed together forming a secure connection. This design not only makes coupling more efficient and safer but allows for slight rotational movement accommodating the natural shifts and forces experienced during a train's journey, especially on curves or uneven tracks. The knuckle coupler's ability to withstand heavy loads and provide a quick reliable connection is why it remains the standard for freight and passenger trains across the continent. NOW YOU KNOW!
Linking Up: Storm Clouds Sort Charge Until the Air Gives Way
Inside thunderstorms, collisions between ice crystals, graupel (soft hail) and supercooled droplets in strong updrafts separate electric charge. Typically the upper cloud becomes positively charged and the middle to lower region negatively charged. When the charge difference grows large enough, the air breaks down and a lightning discharge flashes within the cloud, between clouds, or to the ground. The channel heats the air to around 50,000 °F, and the sudden expansion makes thunder. The footage alternates storm clouds lit by lightning with a dish of metal balls in oil that line up into chains under high voltage, a demonstration of charges linking up, which I read as an exemplar, not lightning itself.
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DID YOU KNOW? Lightning forms through a complex process within storm clouds that involves creating a separation of electric charges. Positively charged particles accumulate at the top while negatively charged particles gather at the bottom. When the difference in charge between the cloud and the ground or within the cloud itself becomes too great the electric potential breaks down the insulating properties of the air. This causes a rapid discharge of electricity resulting in a lightning bolt. The intense heat from the lightning causes the air to expand rapidly producing the accompanying thunder! NOW YOU KNOW!
Video Trickery: Phone Videos Can Bend Propellers
Many CMOS image sensors use a rolling shutter: instead of capturing every pixel at the same instant, they read the frame out row by row, usually top to bottom. When something moves fast during that readout, or the camera itself moves, each row records it at a slightly different moment. The result is skew, wobble ('jello') or strange shapes, like propeller blades that look curved or detached, and flashes that light only part of a frame. A global shutter exposes all pixels at once and avoids this. The footage shows spinning blades and strings distorted on camera.
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DID YOU KNOW? The rolling shutter effect is a distortion phenomenon that occurs when capturing fast moving objects or when the camera itself moves quickly. This effect is common in cameras with CMOS sensors which capture images by scanning across the scene from top to bottom or vice versa, rather than capturing the entire image at once. As a result objects moving quickly across the frame can appear skewed, leaning, or warped as different parts of the object are captured at slightly different times. NOW YOU KNOW!
A Real Hot Head: A Safety Match Needs the Box to Light
A safety match head typically contains potassium chlorate as an oxidizer, sulfur and other fuels, ground glass for friction and a binder. The striking strip on the box holds red phosphorus and powdered glass. When the match is struck, friction converts a tiny amount of red phosphorus into white phosphorus, which ignites in air; that heat starts the potassium chlorate decomposing to release oxygen, which burns the sulfur and other fuels in the head and then lights the wood or paper stick. Strike-anywhere matches carry phosphorus sesquisulfide in the head itself. The footage shows close-ups of a match head igniting.
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DID YOU KNOW? Match head combustion involves a chemical reaction that ignites when the match is struck. The head of a match typically contains a mix of chemicals like potassium chlorate, sulfur, and glass powder. When struck against a rough surface friction generates heat causing the potassium chlorate to decompose. This decomposition releases oxygen which reacts with the sulfur and other materials to produce a flame, allowing the match to burn until it's extinguished. NOW YOU KNOW!
Iceberg Blue: Dense Glacier Ice Glows Blue
Glacier ice forms as snow is buried and compressed over years, squeezing out air bubbles. Ice and water absorb a little more red light than blue, so over long paths through clear ice, red is removed and the light that comes back looks blue. Snow and bubbly ice look white because countless surfaces scatter all colors before much is absorbed. So deep, dense, bubble-free ice in a glacier or iceberg looks the most blue. The footage shows a glacier front calving blue ice into the sea.
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DID YOU KNOW? The deeper blue color of iceberg's ice further down is due to the way that light interacts with the ice. As light penetrates the ice, the ice absorbs more of the longer wavelengths reds and yellows, and scatters the shorter wavelengths the blues. This effect is enhanced in denser, older ice which has fewer air bubbles and impurities. The clearer purer ice deep within the iceberg absorbs more red light and reflects more blue light creating a richer deeper blue color! NOW YOU KNOW!
Liquid Rock: Lava Can Flow at 1,200 °C
Lava is molten rock erupted at the surface; underground, the same material is called magma. Most magma forms in the upper mantle, and a key way rock melts there is decompression: as hot mantle rises, the pressure on it drops and it partly melts, which is why mid-ocean ridges and hotspots such as Iceland and Hawaii are so volcanic. Erupted lava typically ranges from about 700 to 1,200 °C (1,300 to 2,200 °F). Runny basaltic lava can travel quickly, while silica-rich lava is thick and slow. As it cools, lava can crack into hexagonal basalt columns or build up islands. The footage is drone video of lava fountaining and flowing in Iceland.
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DID YOU KNOW? Lava is molten rock expelled by a volcano during an eruption. It originates from the Earth's mantle where intense heat and pressure cause rock to melt. When lava reaches the surface it can flow at varying speeds depending on its composition and temperature. The temperature of lava typically ranges between 700 to 1,200 degrees Celsius or 1,300 to 2,200 degrees Fahrenheit. The flow and cooling of lava can create various geological formations such as basalt columns and volcanic islands. NOW YOU KNOW!
NUCLEAR DISASTER: Under Chernobyl's Reactor 4 Sits a Mass of Solidified Corium
On April 26, 1986, Reactor 4 at the Chernobyl Nuclear Power Plant exploded and burned, in the Soviet Union's Ukrainian SSR, now The Ukraine. During the accident, molten fuel, cladding, concrete and sand mixed into a lava-like material called corium that flowed into rooms beneath the reactor. The best-known mass, the Elephant's Foot, was found in December 1986 in a maintenance corridor below the reactor's remains. Measurements then put its surface at roughly 8,000 to 10,000 roentgens per hour, enough to deliver a 50/50 lethal dose in a matter of minutes. Its radioactivity has fallen a great deal since, but it remains hazardous, and the site sits inside the New Safe Confinement arch completed in 2016. The footage shows photos from inside the plant and the corium mass.
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DID YOU KNOW? The Chernobyl disaster in 1986 resulted in the catastrophic meltdown of reactor 4 at the Chernobyl nuclear power plant in Ukraine. One of the most infamous remnants of this disaster is the Elephant's Foot, a massive highly radioactive mass of corium and other materials that formed beneath the reactor. Resembling the rough texture and shape of an elephant's foot this deadly formation was created by the molten nuclear fuel mixing with concrete, sand, and other reactor components. Initially so radioactive that it could deliver a lethal dose in just minutes, the Elephant's Foot remains a potent symbol of the dangers of nuclear power gone awry. Over time its radioactivity has decreased but it still poses a significant hazard. NOW YOU KNOW!
Is Water Sticky?: A Coin Can Hold a Dome of Water Above Its Edge
Water molecules attract one another through hydrogen bonds. At the surface, molecules have neighbors only below and beside them, so they're pulled inward, and the surface behaves like a stretched film. That's surface tension, and water's is high for a liquid, about 72 millinewtons per meter at room temperature. Attraction between like molecules is called cohesion; attraction to other surfaces, like glass or a plant's xylem walls, is adhesion. Together they drive capillary action. Surface tension shapes drops, lets some insects stand on water and dominates fluid behavior in microgravity, where water forms floating spheres. The footage shows water beading on a coin and drops on surfaces.
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DID YOU KNOW? Surface tension in water is a result of its cohesive properties where water molecules strongly adhere to each other due to hydrogen bonding. This cohesion creates a "skin" on the water's surface that is resistant to external forces. This adhesive force is crucial in many natural processes including the formation of water droplets and the movement of water through plants. In technological applications it affects how liquids behave in different environments such as in microgravity or on hydrophobic surfaces. NOW YOU KNOW!
2-Billion Dollar B=2: Twenty-One Bombers Cost $44.7 Billion
The Northrop B-2 Spirit is a US Air Force stealth bomber with a flying-wing shape designed to reduce its radar cross-section. It first flew publicly in 1989. By 1996, the program had produced 21 B-2s at a total cost of $44.7 billion, an average of $2.13 billion per aircraft when research and development are included. The cost of building each additional aircraft, without development, has been estimated at about $737 million in 1997 dollars. Plans for 132 aircraft were cut back as the Cold War ended, which raised the per-plane share of development costs. The B-2 is being succeeded by the Northrop Grumman B-21 Raider. The footage shows a B-2 in flight and close-ups of its wing.
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DID YOU KNOW? The B-2 Spirit also known as the Stealth Bomber is a marvel of modern aviation technology and a key asset in the United States Air Force's strategic arsenal. Designed for stealth the B-2 can evade radar detection, making it capable of penetrating sophisticated enemy defenses. Its distinctive flying wing design helps minimize its radar cross-section. The B-2 program has been one of the most expensive military projects with each bomber costing approximately $2,000,000,000! NOW YOU KNOW!
A Web of Wonder: An Orb Web Starts With a Frame of Dry Silk
Spiders make silk in abdominal glands and draw it out through spinnerets at the rear of the abdomen. Different glands make different silks: dry, strong dragline silk for frames and radii, and gluey capture silk for the spiral that holds prey. An orb weaver typically lays a bridge line, builds a frame and radii, puts in a temporary spiral, then replaces it with the sticky capture spiral. Spider silk combines high strength with stretch, so it absorbs the energy of flying insects. Web shapes vary by family, from orb webs to sheet webs and funnel webs, and web building is largely innate. The footage shows an orb weaver spinning its web.
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DID YOU KNOW? Spiderweb weaving is a fascinating process that involves the use of silk produced from specialized glands. The spider extrudes silk from its spinnerets, small organs located at the end of its abdomen. It carefully lays down a framework of non-sticky silk to create the structure of the web then adds sticky spiral strands to trap prey. The silk is incredibly strong and elastic making it ideal for capturing insects. Spiders use different web designs such as orb webs, funnel webs, and sheet webs depending on their species. The process of web weaving is instinctual and involves precise movements showcasing the spider's skill and adaptability. NOW YOU KNOW!
Worms This Flat: Bright Colors Can Be a Warning
Marine polyclad flatworms (Polycladida) are thin, often brightly patterned flatworms found mostly on reefs and rocky shores. They glide on beds of cilia and muscular waves, and most are carnivores that eat small invertebrates such as sea squirts, snails and crustaceans. Some species' bright colors are thought to warn predators that they're distasteful or toxic. The famous experiments where a flatworm is cut into pieces and each regrows into a whole animal mostly involve freshwater planarians, which carry stem cells called neoblasts. The footage shows several colorful marine flatworms rippling over coral and rock.
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DID YOU KNOW? Marine flatworms are fascinating and diverse creatures found in oceans around the world. These vibrant invertebrates come in various colors and patterns which serve as warnings to predators about their toxicity. Flatworms are carnivorous often feeding on small invertebrates and sometimes even each other. They glide gracefully over surfaces using tiny cilia on their undersides. One remarkable feature of marine flatworms is their ability to regenerate. If a flatworm is cut in half each piece can grow into a complete organism. This regenerative ability is a subject of interest in scientific research. NOW YOU KNOW!
Totally Radula!: Velvet Worms Catch Prey by Shooting Slime
Velvet worms (Onychophora) are soft, many-legged invertebrates of humid tropical and southern temperate forests. They hunt small invertebrates by squirting a sticky slime from glands near the head that hardens and traps the prey, then inject saliva and eat it. There are two living families, Peripatidae and Peripatopsidae, and species range from tiny to the largest known, Mongeperipatus solorzanoi of Costa Rica, at about 22 cm. Velvet worms live in Southeast Asia, but I couldn't verify a species called the 'giant red velvet worm' there or the 20 cm figure for it. The title's 'radula' is a pun: a radula is a mollusk's rasping tongue, which velvet worms don't have; they bite with jaws. The footage shows a reddish velvet worm walking over moss.
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DID YOU KNOW? The giant red velvet worm is a fascinating velvet worm found in the rainforests of Southeast Asia, noted for its striking reddish hue and impressive size reaching up to 20 cm in length. This invertebrate preys on insects and other small animals. It hunts using a unique method ejecting a sticky slime from its specialized glands to immobilize its prey before consuming it. The giant red velvet worm's unique appearance and predatory strategy make it a remarkable example of the diverse lifeforms in tropical ecosystems. NOW YOU KNOW!
Amazing Underwater Forests: Some Forests Grow Underwater, and Fast
Kelp forests are dense stands of large brown algae (kelp) that grow in cool, shallow, nutrient-rich coastal waters. NOAA notes that kelp can grow up to 18 inches (45 cm) a day in ideal conditions and is rarely found deeper than about 15 to 40 m. Giant kelp (Macrocystis) can grow 30 to 60 cm vertically per day and form a floating canopy at the surface. The forests shelter and feed fish, invertebrates and marine mammals. Kelp is an alga, not a true plant, and like other seaweeds it takes up carbon dioxide as it grows. The footage shows divers' views of tall kelp fronds with fish swimming among them.
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DID YOU KNOW? Kelp forests are underwater ecosystems formed by dense growths of kelp a type of large brown seaweed found in shallow nutrient-rich coastal waters. These forests provide critical habitat and food for a wide range of marine life. Kelp grows rapidly often reaching lengths of over 100 feet and forms a canopy that supports diverse species from fish to invertebrates. Their rapid growth and ability to absorb carbon dioxide make kelp forests important for marine biodiversity and climate regulation. NOW YOU KNOW!
An MRI's Skeleton: Strip the Covers off a Scanner and the Ring Starts Spinning
The machine in the footage is almost certainly a CT (computed tomography) scanner with its covers off, not an MRI. In a CT scanner, an X-ray tube and detector array are mounted on a ring-shaped gantry that spins rapidly around the patient, and a computer turns the measurements into cross-sectional images. An MRI works differently and has no spinning parts. A strong static magnet lines up hydrogen nuclei in the body, radio-frequency pulses tip them, and stationary gradient coils briefly vary the magnetic field so the signals can be located in space. The nuclei give off radio signals as they relax, and a computer builds images in which tissues differ by how fast they relax. The Reel's description of magnets, radio waves and gradient fields fits MRI; only the 'spinning' parts and the footage belong to CT.
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DID YOU KNOW? An MRI or magnetic resonance imaging machine works by using powerful magnets and radio waves to generate detailed images of the body's internal structures. The machine's spinning gradient coil assembly creates varying magnetic fields allowing for precise spatial encoding. This process manipulates the resonance frequency of hydrogen protons in the body, which emits signals that are converted into detailed images by a computer. The spinning component aids in differentiating tissues. NOW YOU KNOW!
The Ghost Mushroom: Some Australian Forests Glow Green at Night
The ghost fungus, Omphalotus nidiformis, is a bioluminescent mushroom found mainly in southern Australia and Tasmania, with reports from India in 2012 and 2018. Its fan- or funnel-shaped caps grow in overlapping clusters on dead or dying wood, often eucalypts, and give off a soft green glow in the dark. Fungal bioluminescence comes from an enzyme, luciferase, oxidizing a luciferin molecule. English naturalist Miles Joseph Berkeley first described it in 1844 as Agaricus nidiformis, from material collected by the Scottish naturalist James Drummond. It resembles edible oyster mushrooms but is poisonous: not lethal, but eating it causes severe cramps and vomiting, which are attributed to compounds called illudins. The footage shows clusters of green-glowing mushrooms on a tree at night.
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DID YOU KNOW? The ghost mushroom is a bioluminescent fungus native to Australia and Tasmania known for its eerie glow. This mushroom emits a soft greenish light visible in dark conditions. The luminescence is due to a chemical reaction involving luciferin, luciferase, and oxygen. Ghost mushrooms typically grow on decaying wood particularly in eucalypt forests. While visually striking these mushrooms are toxic and should not be consumed. Their ghostly glow and unique appearance make them a subject of fascination for both mycologists and curious onlookers. NOW YOU KNOW!
No Perfect Crystallizations: Every Snowflake Writes Its Own Flight Log
A snow crystal starts when supercooled cloud droplets freeze onto a tiny particle such as dust or pollen, and then grows as water vapor deposits directly onto the ice. Ice's crystal structure gives it six-fold symmetry, so crystals grow as hexagonal plates, columns or branching stars. Which shape wins depends on temperature and humidity, so as a crystal tumbles through changing conditions, each stage leaves its mark on its arms. Caltech physicist Kenneth Libbrecht, who grows snow crystals in the lab, explains that complex flakes are almost certainly never identical because of the huge number of possible growth paths, though very simple crystals can look alike, and researchers have grown 'identical-twin' crystals side by side under matched conditions. The footage shows a time-lapse of a crystal growing branches.
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DID YOU KNOW? Snowflakes form when water vapor in the air freezes onto a particle such as dust or pollen grain. This process called nucleation creates an ice crystal. As the crystal falls through the cloud it encounters more water vapor which freezes onto it in a hexagonal pattern due to the molecular structure of water. The crystal continues to grow and develop intricate, unique shapes as it descends influenced by factors like temperature and humidity. No two snowflakes are exactly alike because of the constantly changing conditions they experience during their formation. NOW YOU KNOW!
Making Plasma in the Microwave: A Glowing Ball of Plasma Can Appear Inside a Kitchen Microwave
Plasma is gas in which enough atoms have lost electrons that it conducts electricity and glows. In a microwave oven, plasma usually starts where the field gets concentrated: at sharp metal edges, or in the gap between two grape halves. A 2019 study in PNAS showed the grape effect comes from the fruit acting as a resonator; water-rich spheres trap the microwaves and build a hotspot where they touch, which ionizes the surrounding air. A match flame can do the same by supplying already-ionized gas. Once started, the plasma absorbs microwave energy, rises as a glowing ball and can damage the oven, so I'd treat it as a demonstration, not a kitchen trick. The footage shows a bright, flickering plasma ball inside an inverted glass in a microwave.
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DID YOU KNOW? Plasma in microwaves is typically created by exciting gases into an ionized state. This can happen when a microwave oven's electromagnetic waves interact with metal objects or thin air pockets causing a strong electric field. This field can strip electrons from the atoms of gases present such as oxygen or nitrogen, ionizing them and creating plasma. The process often starts with a small spark which can ionize more gas molecules leading to a chain reaction. This ionized gas emits light which is why plasma in a microwave often appears as a glowing ball or arc. NOW YOU KNOW!
Newtons Cradle: Lift One Ball, and One Ball Answers
Newton's cradle is a row of identical metal balls hung from a frame so they just touch. Lift and release one end ball, and after the collision the ball at the far end swings out while the middle ones stay almost still. Pull two, and two swing out. The pattern follows from conservation of momentum and of kinetic energy in nearly elastic collisions: one ball leaving at the same speed is the outcome that satisfies both. Small losses to sound, heat and air resistance make the swings die down. The device is named after Isaac Newton, whose laws explain it, but it's credited to the 17th-century French scientist Edme Mariotte. The footage shows a classic desk cradle with five balls clicking back and forth.
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DID YOU KNOW? Newton's Cradle is a device that demonstrates the conservation of momentum and energy. It consists of a series of identically sized metal balls suspended in a straight line by wires. When one ball at the end is lifted and released it strikes the stationary balls transferring its momentum through the series. The ball at the opposite end then swings out with nearly the same speed as the first ball. This process repeats back and forth showcasing the principles of physics in action. NOW YOU KNOW!
Feeling Salty: Drop Sodium in a Lake and the Lake Fights Back
Sodium is a soft alkali metal that reacts with water to form sodium hydroxide (caustic soda) and hydrogen gas, giving off heat. With larger pieces, that heat can ignite the hydrogen. A 2015 study in Nature Chemistry, filmed with high-speed cameras, suggested the violent start isn't just burning hydrogen: the metal loses electrons to the water so fast that the remaining positively charged metal ions repel each other and the surface bursts apart, a Coulomb explosion, exposing fresh metal. The title nods to table salt, sodium chloride, where sodium is tame and bound to chlorine. The footage shows a lump of metal thrown into a pond, then white bursts and spray on the water.
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DID YOU KNOW? Sodium is a highly reactive alkali metal that reacts violently with water. When sodium comes into contact with water it rapidly releases hydrogen gas and heat which can ignite the hydrogen causing a fiery explosion! NOW YOU KNOW!
OVER 0: Ask a Gear to Divide by Zero and It Never Stops
Mechanical calculators divide the way people do long division: by subtracting the divisor over and over and counting the subtractions. With a divisor of zero, each subtraction takes nothing away, so the count never ends. Some machines simply keep cycling, carriage and counters spinning, until the operator stops them by hand. Others jam or trip a stop. That behavior is a physical version of why division by zero is undefined in arithmetic: no number multiplied by zero gives a nonzero result, so there's no answer to find. Desktop mechanical calculators were common office tools from the late 1800s until electronic calculators replaced them in the late 1960s and early 1970s. The footage shows a mechanical calculator's carriage and keys in motion, with a hand at the controls.
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DID YOU KNOW? In the 1950s mechanical calculators were widely used for arithmetic tasks relying on gears and levers to perform operations. However, these machines could not handle division by zero as this operation is undefined in mathematics. When a division by zero was attempted the calculator would typically lock up or enter an endless cycle unable to produce a result. NOW YOU KNOW!
The Opening Ceremony: Every Olympics Opens With a Ceremony Built Around the Host Nation
The Olympic opening ceremony marks the start of each Games, with performances that showcase the host nation's culture and history, the parade of athletes and the lighting of the cauldron. Each ceremony is designed by the host. I posted this Reel two days after the Paris opening ceremony on July 26, 2024. The footage shows the fou drummers from the opening ceremony of the 2008 Beijing Olympics.
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Did you know, the Olympics Opening Ceremony is a grand spectacle that marks the beginning of the games, showcasing the host country's culture, history, and achievements. It's a highly anticipated event featuring elaborate performances, designed to capture the spirit of the Olympics and the host nation. Each ceremony is unique, reflecting the host nation's identity and aspirations. NOW YOU KNOW!
A MOVIE FOR ANTS: Ant-Man Is a Heist Movie at Heart
Ant-Man, directed by Peyton Reed, was released in the U.S. on July 17, 2015, closing Phase Two of the Marvel Cinematic Universe. Paul Rudd plays Scott Lang, an ex-convict recruited by scientist Hank Pym (Michael Douglas) to wear a suit that shrinks him to insect size, alongside Hope van Dyne (Evangeline Lilly). The film is structured as a heist and earned about $519 million worldwide. The Reel is a review with clips; the opinions in it are the Reel's.
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Ant-Man offers a refreshing change of pace in the MCU, with its smaller-scale, heist-centric story. Directed by Peyton Reed, it stars Paul Rudd as Scott Lang, a charming ex-con who becomes the tiny hero Ant-Man. The film's humor, inventive action sequences, and the father-daughter dynamic between Scott and his daughter Cassie resonate with audiences. Michael Douglas as Hank Pym and Evangeline Lilly as Hope van Dyne really bring a lot to the story. Overall, Ant-Man is a fun, light-hearted addition to the MCU, providing a nice balance to the larger, more intense films in the franchise. NOW YOU KNOW!
No Strings On Me: Age of Ultron Introduced Scarlet Witch and Vision
Avengers: Age of Ultron, written and directed by Joss Whedon, was released in the U.S. on May 1, 2015. The Avengers face Ultron (voiced by James Spader), an artificial intelligence created by Tony Stark and Bruce Banner that turns on humanity. It introduced Wanda Maximoff (Elizabeth Olsen), Pietro Maximoff (Aaron Taylor-Johnson) and Vision (Paul Bettany). It earned about $1.4 billion worldwide. The title echoes Ultron's line 'There are no strings on me'. The Reel is a review with clips; the opinions in it are the Reel's.
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Avengers, Age of Ultron. This is an ambitious yet divisive entry in the MCU. Directed by Joss Whedon, it features the Avengers facing off against Ultron, a rogue AI bent on human extinction. The film's action sequences are impressive, and it introduces key characters like Scarlet Witch and Vision. However, its dense plot and multitude of characters sometimes feels overwhelming. Despite mixed reviews, it advances the overall MCU narrative, setting up future conflicts and developments. NOW YOU KNOW!
Rise of the Star-Lord: Guardians of the Galaxy Made a Hit Out of Little-Known Characters
Guardians of the Galaxy, written and directed by James Gunn, was released in the U.S. on August 1, 2014. Chris Pratt stars as Peter Quill, or Star-Lord, leading a team with Gamora (Zoe Saldaña), Drax (Dave Bautista), Rocket (voiced by Bradley Cooper) and Groot (voiced by Vin Diesel). Its soundtrack of 1960s and 1970s songs, Awesome Mix Vol. 1, reached No. 1 on the Billboard 200. The film earned about $773 million worldwide. The Reel is a review with clips; the opinions in it are the Reel's.
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Guardians of the Galaxy is a standout in the MCU. Thanks to its humor, heart, and retro soundtrack, directed by James Gunn, it follows a quirky team of misfits, including Star-Lord, Gamora, Drax, Rocket, and Groot. Chris Pratt's charismatic performance and the unique team dynamics make it an unexpected hit and a fan favorite, bringing a fresh comedic twist to the MCU. NOW YOU KNOW!
BUCKY?!?!?: The Winter Soldier Turned Out to Be Steve Rogers's Old Friend Bucky
Captain America: The Winter Soldier, directed by Anthony and Joe Russo, was released in the U.S. on April 4, 2014, in Phase Two of the Marvel Cinematic Universe. Chris Evans returns as Steve Rogers, who uncovers that HYDRA has infiltrated S.H.I.E.L.D., while Sebastian Stan plays the brainwashed assassin revealed to be Bucky Barnes. The film drew on 1970s political thrillers and earned about $714 million worldwide. The Reel is a review with clips; the opinions in it are the Reel's.
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Next up in Marvel Phase 2 is Captain America The Winter Soldier. Directed by the Russo Brothers, this film mixes superhero action with political thriller elements, as Steve Rogers uncovers a conspiracy within SHIELD. Chris Evans shines as Cap, while Sebastian Stan adds depth as the Winter Soldier. Praised for its tight plot and intense action scenes like the elevator fight, it's considered one of the best MCU films, redefining the genre and raising stakes for future films. NOW YOU KNOW!
To Be Worthy: Thor: The Dark World Was the Second Film of Marvel's Phase Two
Thor: The Dark World, directed by Alan Taylor, was released in the U.S. on November 8, 2013, as the second film of Phase Two of the Marvel Cinematic Universe. Chris Hemsworth's Thor faces the Dark Elf Malekith, who wants to use the Aether to plunge the universe into darkness, and Tom Hiddleston returns as Loki. Critics praised the effects but often faulted the villain and plot. The film earned about $645 million worldwide. The Reel is a review with clips; the opinions in it are the Reel's.
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Thor: The Dark World, the second film in Marvel's Phase 2, brings us back to Asgard as Thor battles the dark elf Malekith, who seeks to use the Aether to plunge the universe into darkness. Chris Hemsworth excels as Thor, but Tom Hiddleston's Loki really steals the show. The film features impressive visual effects and amazing action sequences, though it's often criticized for an underdeveloped villain and convoluted plot. Despite its flaws, it expands the MCU's cosmic mythology and sets up future adventures. NOW YOU KNOW!
We Create Our Own Demons: Iron Man 3 Opened Marvel's Phase Two in 2013
Iron Man 3, directed by Shane Black, was released in the U.S. on May 3, 2013, as the first film of Phase Two of the Marvel Cinematic Universe. Robert Downey Jr. plays Tony Stark, who struggles with anxiety after the events of The Avengers. Its twist about the Mandarin divided fans. The film earned about $1.2 billion worldwide. The Reel is a review with clips; the opinions in it are the Reel's.
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Iron Man 3 was the first film in Marvel's Phase 2, and it took a deeper look into Tony Stark's psyche post-Avengers. Directed by Shane Black, it explores Tony's PTSD and vulnerabilities, with Robert Downey Jr. delivering a standout performance. The controversial Mandarin twist, while divisive, added an unexpected layer to the story. Action scenes like the Air Force 1 rescue and the final battle with multiple Iron Man suits were visually impressive. Overall, Iron Man 3 mixed its psychological depth with blockbuster action, making it a unique entry in Marvel's Phase 2. NOW YOU KNOW!
Bark Beaters: The White-Bellied Woodpecker Is One of Asia's Largest Woodpeckers
The white-bellied woodpecker is a large woodpecker of South and Southeast Asia. It is mostly black with a white belly, and males have a red crown. It drums on trees to communicate and digs into wood for insects. Its nest cavities are later used by other animals, and its need for mature forest makes it a sign of forest health. The footage shows white-bellied woodpeckers on tree trunks.
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Did you know, the white-bellied woodpecker is a striking bird native to South Asia, easily identifiable by its large size and contrasting plumage. Its body is predominantly black, with a white belly and rump, and the males sport a vibrant red crown. These woodpeckers are known for their powerful drumming on trees, which they do to communicate and to excavate insects from wood. They play a crucial role in their ecosystem by controlling insect populations and creating nesting cavities used by other species. The white-bellied woodpecker's preference for mature forests makes it an important indicator of forest health. NOW YOU KNOW!
Synaptic Transmission: Neurons Pass Signals Across a Gap Called the Synaptic Cleft
Neurons communicate at synapses, junctions between two nerve cells. When an action potential reaches the end of the presynaptic neuron, it triggers the release of neurotransmitters from vesicles. They cross the synaptic cleft and bind to receptors on the postsynaptic neuron, opening ion channels. Depending on the neurotransmitter and receptor, the effect excites or inhibits the next neuron. The footage is an animation of a synapse.
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Did you know, synaptic transmission is the process by which neurons communicate with each other? This communication occurs at the synapse, a specialized junction between two neurons. When an electrical impulse or action potential reaches the end of a presynaptic neuron, it triggers the release of neurotransmitters stored in vesicles. These neurotransmitters cross the synaptic cleft and bind to receptors on the postsynaptic neuron, causing ion channels to open. This can either excite or inhibit the postsynaptic neuron. Depending on the type of neurotransmitter and receptor involved, the precise regulation of synaptic transmission is essential for proper functioning of the nervous system. NOW YOU KNOW!
You're Spinning Me Around: A Spinning Gyroscope Resists Any Change to Its Axis
A gyroscope is a spinning wheel or rotor mounted so its axis can point in any direction. While it spins, it resists changes to the direction of its axis because of the conservation of angular momentum, so it can balance at odd angles and keep its orientation as its base moves. The same principle is used in navigation instruments. The footage shows a toy gyroscope balancing in several positions.
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Did you know? Gyroscopes are peculiar devices that demonstrate remarkable stability while spinning. This stability arises from the conservation of angular momentum, a fundamental principle of physics. When a gyroscope spins, it maintains its orientation regardless of the base on which it rests. This is because the spinning rotor inside the gyroscope creates a strong resistance to changes in its axis of rotation. NOW YOU KNOW!
What Are You Waiting For?: Avalanches Can Reach 80 mph Within Seconds
An avalanche is a mass of snow sliding rapidly down a slope. It can be triggered by heavy snowfall, temperature changes or people. The Reel says avalanches can reach 80 miles per hour; typical slab avalanches do, and large powder avalanches can be faster. An avalanche can bury people, destroy buildings and flatten forests. For people caught in one, the main dangers are burial, traumatic injury and hypothermia. The footage shows a large avalanche filmed from a rocky slope.
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Did you know, avalanches are powerful and dangerous events where large masses of snow rapidly slide down a mountain side. Triggered by various factors like heavy snowfall, temperature changes, or human activity, avalanches can reach speeds of up to 80 miles per hour. The immense force of an avalanche can bury people, destroy buildings, and flatten forests in its path. For individuals in the immediate area, the primary dangers include being buried under deep snow, suffering traumatic injuries from the force of the snow and debris, and the risk of hypothermia. Avalanches remain a significant hazard in mountainous regions. NOW YOU KNOW!
Flying Fishermen: Eagles Can Spot Fish From High Above the Water
Several eagles are skilled fishers, including the bald eagle and the African fish eagle. They spot fish from high above, dive and grab them with sharp talons. When a catch is too heavy to lift, an eagle may swim to shore using its wings. The Reel says the fishing success rate can reach 90%; I could not confirm that figure, and success rates vary widely. The footage shows bald eagles.
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Did you know, eagles are exceptional fishers, particularly species like the bald eagle and the African eagle. With their keen eyesight, they can spot fish from high above the water. Once a target is identified, they dive at incredible speeds, extending their sharp talons to snatch the fish from the water. Their powerful grip ensures the fish can't escape. Even if a fish is too heavy to carry, eagles have been seen swimming to shore with their catch. Their fishing success rate can be as high as 90%, showcasing their remarkable hunting prowess and adaptability. NOW YOU KNOW!
Oxidized Aluminum: A Drop of Mercury Can Make Aluminum Grow White Fibers
Aluminum is normally protected by a thin oxide layer. Mercury disrupts that layer by forming an amalgam, so the exposed aluminum oxidizes rapidly in air, growing white fibers of aluminum oxide in an exothermic reaction. The process weakens the metal, which is why mercury is kept away from aluminum structures such as aircraft. The footage shows mercury placed on an aluminum plate and the fibrous growth that follows.
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Did you know, when aluminum reacts with liquid mercury, the mercury disrupts aluminum's protective oxide layer, leading to rapid oxidation. This reaction produces aluminum oxide, a white, powdery, or fibrous substance, in an exothermic, heat-releasing reaction. The process significantly weakens the aluminum, causing structural failure. This is why aluminum and mercury are often kept separate, especially in critical applications like aircraft and machinery. NOW YOU KNOW!
Kiloton: In July 1946, the US Detonated a 23-Kiloton Bomb Underwater at Bikini Atoll
After World War II, the United States conducted nuclear tests at Bikini Atoll in the Marshall Islands. Operation Crossroads in 1946 included the Baker test on July 25, 1946, in which a 23-kiloton atomic bomb was detonated underwater to study effects on naval vessels. It threw up a huge column of water and caused severe radioactive contamination. Bikini's residents had been relocated before the tests and have not resettled the atoll permanently. The footage shows the Baker test.
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Did you know Bikini Atoll was the site of nuclear testing by the United States after WWII? One of the most notable tests was Operation Crossroads in 1946, which included the Baker test. The Baker Test involved detonating a 23 kiloton atomic bomb underwater to study the effects on naval vessels. The explosion created a massive water column and caused significant radioactive contamination, making Bikini Atoll uninhabitable. The test highlighted the destructive power of nuclear weapons and contributed to the understanding of radiation effects. NOW YOU KNOW!
CASCADE: A Water Drop Can Bounce and Shrink Several Times Before It Vanishes
When a drop of water lands gently on a pool, a thin film of air can keep it from merging at once, so it appears to bounce. It then partly merges, leaving behind a smaller drop, and this repeats in what is called a coalescence cascade until the drop is fully absorbed. Surface tension holds each drop's shape between the stages. The footage is a slow-motion lab recording of a drop falling from a needle.
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Did you know, when water falls onto the surface of a much larger body of water, it can appear to bounce and shrink before being completely absorbed? This phenomenon is due to what's known as the coalescence cascade. Initially, surface tension causes the drop to maintain its shape and bounce on the surface. As the drop loses energy, smaller droplets break off and merge with a larger body. The drop gradually shrinks through successive coalescence events until it is fully absorbed.. NOW YOU KNOW!
The Baobab Tree: Baobabs Can Store Large Amounts of Water in Their Trunks
Baobabs (genus Adansonia) are known for their massive, swollen trunks and sparse branches. The nine species are native to mainland Africa, Madagascar and Australia, and some trees live for well over 1,000 years. Their trunks store water that helps them survive long dry seasons. Baobab fruit is rich in vitamin C, and the bark fiber can be made into rope and cloth. The footage shows a car driving along an avenue of baobabs.
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Baobab trees, often referred to as the Tree of Life, are iconic for their massive trunks and longevity. Native to Africa, Madagascar, and Australia, these trees can live for over 1,000 years. Baobabs are well adapted to their environments with trunks that store large amounts of water to survive dry seasons. Their unique appearance, with thick gnarled trunks and sparse branches, makes them easily recognizable. Baobab trees also provide food, shelter, and resources for both humans and wildlife. Their fruit is rich in vitamin C, and their bark can be used for making rope and cloth. NOW YOU KNOW!
About to Blow: Gas Trapped in Magma Can Turn an Eruption Explosive
An eruption becomes explosive when gases dissolved in magma expand rapidly as it nears the surface, shattering the magma into ash and rock that are blasted into the atmosphere. Explosive eruptions can produce pyroclastic flows, fast avalanches of hot gas, ash and rock, as well as ash clouds that threaten aviation and human health. Monitoring volcanoes helps scientists predict eruptions and reduce their impact. The footage shows a lava lake and fountaining lava from above.
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A volcanic eruption can be explosively violent when highly pressurized gases within magma rapidly expand as it reaches the surface. This causes magma to fragment into fine ash and rocks, which are ejected with tremendous force into the atmosphere. Such powerful eruptions can create pyroclastic flows, fast moving avalanches of hot gas, ash, and rock, and produce volcanic ash clouds that pose significant hazards to aviation and human health. Understanding and monitoring these eruptions are crucial for predicting their behavior and mitigating their impacts on surrounding communities and ecosystems. NOW YOU KNOW!
The Beirut Blast: On August 4, 2020, 2,750 Tons of Ammonium Nitrate Exploded in Beirut's Port
On August 4, 2020, a large amount of ammonium nitrate stored at the Port of Beirut, Lebanon, exploded. About 2,750 tons had been kept in a port warehouse for years. Reports say the blast was felt in Cyprus, more than 150 miles (240 km) away. More than 200 people were killed, thousands were injured, and about 300,000 people lost their homes. Buildings across the city were damaged and windows shattered. The footage is phone video of the blast from several places in the city.
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The Beirut explosion on August 4th, 2020 was a catastrophic event that devastated the Lebanese capital. A massive explosion occurred in the port area resulting from the ignition of 2,750 tons of ammonium nitrate stored unsafely in a warehouse. The blast was so powerful it was felt over 150 miles away and created a mushroom cloud similar to a small nuclear explosion. The explosion resulted in over 200 fatalities, injured thousands and left approximately 300,000 people homeless. Buildings were destroyed, windows shattered, and the city's infrastructure was severely damaged. NOW YOU KNOW!
I Wanted You to Know...: Every Heartbeat Starts With a Spark From the Sinoatrial Node
The cardiac cycle is the sequence of contraction and relaxation that pumps blood. It starts in the sinoatrial node, the heart's natural pacemaker, which fires an electrical impulse. The two atria contract and push blood into the ventricles. The impulse then passes through the atrioventricular node and down the bundle of His, and the ventricles contract, pumping blood to the lungs and the rest of the body. The familiar 'lub dub' sound comes from the heart valves closing. The footage is an animated 3D heart.
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Cardiac cycling is a finely tuned sequence that ensures blood flows efficiently through the body. It begins with the sinoatrial node, known as the heart's natural pacemaker, generating an electrical impulse. This impulse causes the atria, the two upper chambers of the heart, to contract, pushing blood into the ventricles. The impulse then travels to the atrioventricular node and down the bundle of His to the ventricles. This causes the ventricles to contract, pumping blood out to the lungs and the rest of the body. This cycle of contraction and relaxation repeats, creating the rhythmic "lub dub" sound of a heartbeat and maintaining continuous blood circulation. NOW YOU KNOW!
The Fingers of Death: Brinicles Are Tubes of Ice That Grow Down From Sea Ice
A brinicle is a hollow tube of ice that grows downward from sea ice in polar waters. As seawater freezes, salt is expelled as very cold, dense brine, which sinks and freezes the less salty seawater around it, forming a tube. If it reaches the seabed, ice can spread across the bottom and trap slow-moving animals such as sea stars and sea urchins. A BBC crew filmed one forming in Antarctica in 2011 for the series Frozen Planet. The footage shows a brinicle growing and spreading, with the presenter.
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DID YOU KNOW? Brinicles are often called ice stalactites, and they're a fascinating underwater phenomenon that forms in polar regions, with extremely cold, dense brine created by the freezing of sea ice, sinks to the ocean floor, and freezes the surrounding seawater. This creates a tube-like structure of ice that extends downward, known as a brinicle. As it grows, it traps and freezes everything in its path, creating a surreal and deadly underwater landscape. NOW YOU KNOW!
Type I: The Kardashev Scale Ranks Civilizations by the Energy They Use
The Kardashev scale was proposed in 1964 by the Soviet astronomer Nikolai Kardashev to classify civilizations by energy use. A Type I civilization uses energy on the scale of all that reaches its home planet from its star, about 10^16 to 10^17 watts for Earth; Type II uses the full output of its star; Type III that of a galaxy. Carl Sagan suggested a sliding scale, on which humanity rates about 0.7. The footage shows animated planets and energy imagery, with the presenter.
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DID YOU KNOW? Kardashev's Type I civilization refers to a society that has harnessed all the available energy resources of its home planet. This includes utilizing solar, wind, geothermal, and other renewable energy sources efficiently and sustainably. Achieving Type I status would mean a significant advancement in technology and global cooperation. Type I civilizations would also have the ability to control and manipulate natural forces on a planetary scale. NOW YOU KNOW!
Very Slippery: Snakes Have Four Main Ways of Moving
Snakes move in four main ways: lateral undulation (serpentine movement), rectilinear movement, sidewinding and concertina movement. Lateral undulation, the most common, sends waves along the body that push against bumps and surfaces; the snake's belly scales grip in one direction and slide in the other. On very smooth surfaces there is little to push against, so a snake can thrash without moving forward. The footage shows a pale snake struggling to move on a slick surface, with the presenter.
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DID YOU KNOW? Snakes move using various forms of locomotion, including serpentine, rectilinear, sidewinding, and concertina movements. Serpentine locomotion, the most common, involves the snake making a series of lateral waves along its body to push against the ground. This requires a high friction surface to provide the necessary resistance for the snake to propel itself forward. Without sufficient friction, the snake would struggle to gain traction and would appear to slither in place. NOW YOU KNOW!
Be Not Afraid: In the Book of Ezekiel, Each Cherub Has Four Faces
The Book of Ezekiel in the Hebrew Bible describes a vision of four living creatures, later identified as cherubim. Each has four faces, of a man, a lion, an ox and an eagle, and four wings. Beside each is a wheel 'within a wheel' whose rims are full of eyes, and the wheels move with the creatures. In Christian and Jewish tradition these wheels became associated with the ophanim. The phrase 'Be not afraid', often said by angels in the Bible, is popular in modern 'biblically accurate angel' memes based on these descriptions. The footage shows digital renderings of eye-covered rings and winged figures, with the presenter.
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DID YOU KNOW? in Ezekiel's visions, angels, specifically cherubim, are described with striking and complex appearances. Each cherubim has four faces, those of a man, a lion, an ox, and an eagle, symbolizing intelligence, strength, service, and swiftness. They can also possess four or more wings, and are accompanied by intersecting wheels, covered in eyes, enabling omnidirectional movement, and representing their all-seeing nature. These wheels, described as a wheel within a wheel, are intimately connected to the cherubim, moving in perfect harmony. This imagery highlights the multifaceted and awe-inspiring nature of these angelic beings. NOW YOU KNOW!
Ferromagnetism: Ferrofluid Grows Spikes Near a Magnet
Ferrofluid is a liquid containing nanoscale magnetic particles, usually magnetite, coated with a surfactant and suspended in a carrier such as oil. It was invented in 1963 by Steve Papell at NASA as a way to move rocket fuel in weightlessness. In a strong magnetic field the liquid forms spikes, an effect called the normal-field instability. Ferrofluids are used as seals around spinning shafts, including in hard drives, and to cool and damp loudspeakers. The footage shows ferrofluid spiking and flowing, with the presenter.
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DID YOU KNOW? ferrofluid is a fascinating liquid that becomes strongly magnetized in the presence of a magnetic field. Invented by NASA in the 1960s for use in rocket fuel systems, ferrofluids are composed of tiny magnetic particles suspended in a carrier fluid. When exposed to a magnetic field, the particles align along magnetic lines of force, creating visually striking patterns that look like spikes. Beyond their mesmerizing visual effects, ferrofluids have practical applications in various fields, including as seals and hard drives, in medical devices, and in mechanical engineering to reduce friction. Their unique properties make them a subject of interest for both scientific research and artistic creation. NOW YOU KNOW!
Not the Space Force: NASA Was Established in 1958
NASA, the National Aeronautics and Space Administration, is the U.S. civilian space agency, established on July 29, 1958. Its Apollo program landed 12 astronauts on the Moon between 1969 and 1972. It also runs robotic missions such as the Mars rovers, Earth-observing satellites and space telescopes including Hubble and, with partners, the James Webb Space Telescope. Its Artemis program aims to return astronauts to the Moon. The U.S. Space Force, by contrast, is a military branch founded in 2019. The footage shows NASA missions and facilities, with the presenter.
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NASA, also known as the National Aeronautics and Space Administration, is at the forefront of space exploration and scientific discovery. Established in 1958, NASA has achieved monumental milestones, including landing humans on the moon during the Apollo missions and launching the Hubble Space Telescope. NASA's work extends beyond manned missions. It includes robotic explorers on Mars, satellites studying Earth's climate and telescopes, peering into the distant universe. The agency continues to push the boundaries with projects like the Artemis Program, aiming to return humans to the moon and eventually reach Mars. NASA's innovations have not only expanded our understanding of space, but also led to advancements benefiting life on Earth. NOW YOU KNOW!
Look Up, Can You See It?: The ISS Orbits About 400 km Above Earth
The International Space Station is a modular space station in low Earth orbit, at about 400 km (250 miles), circling Earth about every 90 minutes. Its first module launched in 1998, and it has been continuously crewed since November 2000. It is a joint project of NASA, Roscosmos, the European Space Agency, JAXA and the Canadian Space Agency, and serves as a microgravity laboratory. Because it is large and reflective, it is often visible from the ground as a bright moving point shortly after sunset or before sunrise. The footage shows the station and its crews, with the presenter.
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DID YOU KNOW? The International Space Station, or the ISS, is a wonder of modern engineering and international cooperation. Orbiting Earth at about 250 miles above, the ISS serves as a unique laboratory for scientific research and experiments in microgravity. It's a collaborative effort involving space agencies from the U.S., Russia, Europe, Japan, and Canada. Astronauts aboard the ISS conduct studies ranging from biology to physics, providing insights that benefit life on Earth and future space exploration. The ISS also serves as a hub for testing new technologies and international partnerships in space. It's a beacon of human ingenuity and a stepping stone for future missions to the Moon, Mars, and beyond. NOW YOU KNOW!
It IS Rocket Science: NASA's Space Shuttle Was the First Reusable Crewed Spacecraft
The Space Shuttle was NASA's partly reusable launch system, flown from April 12, 1981, to July 21, 2011. Each stack combined a winged orbiter, a large external fuel tank and two solid rocket boosters; the orbiter landed like a glider and was reused. The five orbiters that flew in space, Columbia, Challenger, Discovery, Atlantis and Endeavour, made 135 missions, launching satellites and probes, deploying and servicing the Hubble Space Telescope, and building much of the International Space Station. Two orbiters and 14 astronauts were lost, in the Challenger (1986) and Columbia (2003) disasters. The footage shows shuttle launches, with the presenter.
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SPACE SHUTTLES were pivotal in the history of space exploration, revolutionizing how we access space. Developed by NASA, these reusable spacecraft carried astronauts and cargo to and from orbit. The iconic design included a powerful orbiter, fuel tank and solid rocket boosters. Space shuttles enabled significant missions, such as deploying satellites, repairing the Hubble Space Telescope and constructing the International Space Station. With each launch and landing they demonstrated engineering and versatility. Retired in 2011, space shuttles remain symbols of human ingenuity and the drive to explore beyond our planet. NOW YOU KNOW!
Keep Looking, What Do You See?: Hubble Launched in 1990 and Still Works Today
The Hubble Space Telescope, a NASA project with the European Space Agency, was launched aboard Space Shuttle Discovery on April 24, 1990. A flaw in its main mirror was corrected by astronauts in 1993, and five servicing missions kept it working. Orbiting above the atmosphere, it takes sharp images free of atmospheric blur. Its observations helped pin down the age of the universe at about 13.8 billion years, supported the discovery of the universe's accelerating expansion and dark energy, and produced views of distant galaxies and nebulae. The footage shows Hubble in orbit and its images, with the presenter.
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The Hubble Space Telescope is one of the most significant astronomical instruments in history. Launched by NASA in 1990, Hubble orbits Earth and captures stunning images of the universe free from atmospheric distortion. Its powerful observations have led to groundbreaking discoveries, such as the age of the universe, the existence of dark energy, and detailed views of distant galaxies, nebulae and star forming regions. Hubble has revolutionized our understanding of the cosmos, providing scientists with invaluable data and captivating the public with its breathtaking images. Its legacy continues to inspire and expand our knowledge of the universe. NOW YOU KNOW!
Eyes in the Sky: Satellites Carry TV, Internet and Phone Signals
Thousands of active satellites orbit Earth. Communications satellites relay TV, internet and phone signals; navigation constellations such as the U.S. GPS let receivers calculate their position; weather satellites track clouds and storms; and Earth-observation and science satellites study the climate, land, oceans and space weather. The first artificial satellite, Sputnik 1, was launched in 1957. The footage shows animated Earth and satellites, with the presenter.
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DID YOU KNOW? Satellites are essential to modern life. Orbiting Earth and providing crucial services, they enable global communications, delivering TV, internet, and phone signals worldwide. Satellites also play a key role in navigation systems like GPS, helping us find our way. In weather forecasting, satellites monitor climate patterns and track storms, keeping us informed and safe. Additionally, they assist in scientific research, studying everything from space weather to environmental changes on Earth. Whether for communication, navigation, weather monitoring, or research, satellites are vital tools that connect and protect our world. NOW YOU KNOW!
Wanderlust & Desert Dust: Dune Bashing Means Driving 4x4s Over Sand Dunes
Desert safaris are among Dubai's most popular tourist activities. Tours typically include dune bashing, driving 4x4 vehicles over the dunes of the Arabian Desert, or riding dune buggies, along with camel rides, sandboarding and an evening at a Bedouin-style camp with a barbecue dinner and entertainment. Many tours run in conservation areas such as the Dubai Desert Conservation Reserve. The footage shows dune buggies, 4x4s and desert camps, with the presenter.
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Explore the Dubai desert like never before, with thrilling dune buggies and desert safaris. Picture yourself speeding over golden dunes in a powerful dune buggy, feeling the adrenaline rush. Desert safaris offer a mix of adventure and culture, from dune bashing in 4x4s, to camel rides and traditional bedouin camps. Enjoy a mesmerizing sunset over the sands, followed by a delicious BBQ dinner under the stars. It's an unforgettable experience, blending excitement and the timeless beauty of the Arabian desert. Dubai's desert adventures are perfect for those seeking both thrill and serenity in one amazing trip. NOW YOU KNOW!
A Winter Oasis: Ski Dubai's Longest Run Is 400 Meters Long
Ski Dubai is an indoor ski resort in the Mall of the Emirates, opened in 2005. It covers 22,500 square meters with five runs, the longest 400 m with a drop of about 60 m, kept below freezing year-round. It has a snow park with tobogganing and an ice cave, and a colony of king and gentoo penguins that visitors can meet. The footage shows the slopes, snow park and penguins, with the presenter.
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Ski Dubai, situated within the Mall of the Emirates, is a remarkable indoor ski resort that brings winter sports to the heart of the desert. Spanning 22,500 square meters, this impressive facility features five slopes of varying difficulty, catering to skiers and snowboarders of all levels. From beginners to experts, the longest run is 400 meters, complete with a fall of over 60 meters, providing a thrilling experience akin to that of a traditional mountain resort. In addition to the slopes, Ski Dubai also has a snow park, which is the largest indoor snow park in the world, offering attractions such as Tobogganing Hills, an ice cave, and a giant snowball fight area. For those looking to experience more than just skiing, the resort also houses a colony of king and Gentoo penguins, with daily penguin encounters that delight visitors of all ages. Ski Dubai's unique offering of snow-based activities in the midst of a desert city makes it a standout attraction, providing a year-round winter wonderland experience in one of the hottest regions on the planet. NOW YOU KNOW!
Mall of the Emirates: The Dubai Mall Has More Than 1,200 Shops
Despite the title, the Reel's voiceover describes the Dubai Mall in Downtown Dubai, opened in 2008 and one of the largest malls in the world by total area, with more than 1,200 shops, the Dubai Aquarium and Underwater Zoo with its walk-through tunnel, an Olympic-size ice rink and a multi-level waterfall. It connects to the Burj Khalifa and sits beside the Dubai Fountain. The Mall of the Emirates, a separate mall opened in 2005 in Al Barsha, is home to Ski Dubai. The footage shows the Dubai Mall and other Dubai malls, with the presenter.
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The Dubai Mall, located in the heart of downtown Dubai, is the largest shopping mall in the world by total area, offering an unparalleled shopping and entertainment experience. With over 1200 retail stores, the mall features a diverse range of high-end fashion brands, electronics, and specialty shops catering to every shopper's needs. Beyond shopping, the Dubai Mall is home to a myriad of attractions, including the Dubai Aquarium and Underwater Zoo, which houses thousands of aquatic animals and a 270-degree walkthrough tunnel, providing a captivating underwater experience. Additionally, the mall boasts an Olympic-sized ice rink, a multi-screen cinema complex, and a variety of dining options, ranging from gourmet restaurants to casual eateries. One of its standout features is the impressive indoor waterfall, which spans all four levels of the mall. The Dubai Mall also offers direct access to the Burj Khalifa and hosts the spectacular Dubai Fountain Show, further enhancing its appeal as a must-visit destination for both tourists and locals. NOW YOU KNOW!
Astonishing Arabian Architecture: The Burj Khalifa Stands 828 Meters Tall
Dubai's skyline includes the Burj Khalifa, the world's tallest building at 828 m since 2010; the Burj Al Arab, a sail-shaped hotel opened in 1999 and often marketed as 'seven-star'; the Cayan Tower, a residential tower that twists 90 degrees over its height; and the Dubai Frame, a 150 m picture-frame structure opened in 2018 with views of old and new Dubai. The planned Dubai Creek Tower was meant to exceed the Burj Khalifa, but construction stopped around 2020. The footage shows Dubai's buildings, with the presenter.
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Dubai's skyline is a testament to its architectural innovation and ambition, featuring a collection of some of the world's most iconic buildings and skyscrapers. At the forefront is the Burj Khalifa, the tallest building in the world, standing at an astonishing 828 meters, with 163 floors. This architectural marvel offers breathtaking views from its observation decks, and houses luxurious residences, offices, and the prestigious Armani Hotel. Another standout structure is the Burj Al Arab, often dubbed the world's only seven-star hotel, known for its distinctive sail-shaped silhouette and unparalleled luxury. The Cayan Tower, also known as the Infinity Tower, is famous for its unique 90-degree spiral design, making it one of the most visually striking residential buildings globally. The Dubai Frame, a massive rectangular structure, offers panoramic views of both old and new Dubai from its top ridge, symbolizing the city's rich past and ambitious future. Additionally, the upcoming Dubai Creek Tower is set to surpass the Burj Khalifa in height upon completion, further enhancing Dubai's reputation for towering skyscrapers. For more information on the Burj Khalifa, visit Burj Khalifa. NOW YOU KNOW!
Life on The Palm: Palm Jumeirah Is Built From Reclaimed Sand and Rock
Palm Jumeirah is an artificial archipelago off Dubai, built by land reclamation shaped like a palm tree with a trunk, 17 fronds and an encircling crescent breakwater. Construction began in 2001, using about 94 million cubic meters of sand and 7 million tonnes of rock. It holds hotels such as Atlantis The Palm, villas and apartments, and is served by the Palm Jumeirah Monorail, opened in 2009. The footage shows aerial views of the island and its buildings, with the presenter.
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The Palm Jumeirah is an iconic man-made archipelago in Dubai, designed to resemble a palm tree, a symbol deeply rooted in Arabian culture. Its construction began in 2001 and took over five years, involving extensive land reclamation efforts. This ambitious project required the use of millions of cubic meters of sand and rock to create its distinctive shape, which includes a trunk, 17 fronds, and a surrounding crescent that acts as a breakwater. The Palm Jumeirah is a testament to Dubai's innovative spirit and engineering prowess. It houses luxury hotels, upscale residential villas, and apartment complexes, along with a variety of retail, entertainment, and leisure facilities. Notable landmarks on the island include the Atlantis, the Palm Resort, and the Palm Jumeirah monorail, which offers a unique vantage point of the island's stunning layout. The development of the Palm Jumeirah has significantly boosted Dubai's tourism and real estate sectors, cementing its status as a global luxury destination. NOW YOU KNOW!
Supercar Police: Dubai Police Patrol in Lamborghinis, Ferraris and Bentleys
Since 2013, Dubai Police have added high-end sports and luxury cars to their fleet, including models from Lamborghini, Ferrari, Bentley, Bugatti and McLaren, in green-and-white livery. The cars are deployed mainly in tourist areas such as Downtown Dubai and Jumeirah, where they also serve for public relations and photos. The footage shows Dubai Police supercars on the streets, with the presenter.
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Dubai's police force boasts an unconventional patrol fleet that includes some of the world's most luxurious vehicles, such as Lamborghinis, Ferraris, and Bentleys. These high-performance cars are not merely for display, but are actively deployed for patrolling the city's bustling tourist areas and highways. Beyond their aesthetic appeal, these vehicles are equipped with cutting-edge technology and features that aid in police work, enhancing their effectiveness in maintaining law and order. The presence of these luxury cars has not only boosted the city's glamorous image, but has also turned heads worldwide, becoming a unique tourist attraction. Visitors and residents alike are often amazed to see such expensive and exotic vehicles in police livery, adding to Dubai's reputation for luxury and extravagance. NOW YOU KNOW!
Avengers Assemble!: The Avengers United Six Heroes on Screen for the First Time
The Avengers, written and directed by Joss Whedon, was released in the U.S. on May 4, 2012, closing Phase One of the Marvel Cinematic Universe. It brings together Iron Man, Captain America, Thor, the Hulk, Black Widow and Hawkeye against Loki, played by Tom Hiddleston, ending in the Battle of New York. Mark Ruffalo took over as Bruce Banner. It earned about $1.52 billion worldwide, at the time the third-highest-grossing film ever. The Reel is a review with clips; the opinions in it are the Reel's.
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Closing out phase one, we have The Avengers from 2012. The film that brought all our favorite heroes together for the first time. Directed by Joss Whedon, this movie was a pivotal moment for the superhero genre. The chemistry among the cast is electric, with standout performances from Robert Downey Jr., Chris Evans, Chris Hemsworth, and Scarlett Johansson. The action sequences are thrilling, especially the Battle of New York, which is a visual spectacle. The film masterfully balances humor, character development, and epic battles. Loki, played by Tom Hiddleston, serves as a compelling villain. The Avengers wasn't your run-of-the-mill superhero movie. It was a celebration of everything that made the Marvel Cinematic Universe great. NOW YOU KNOW!
I Can Do This All Day: Captain America: The First Avenger Is Set Mainly During World War II
Captain America: The First Avenger, directed by Joe Johnston, was released in the U.S. on July 22, 2011, as the fifth film of the Marvel Cinematic Universe. Chris Evans plays Steve Rogers, a frail volunteer turned super-soldier in World War II, with Hayley Atwell as Peggy Carter and Hugo Weaving as the Red Skull. The line 'I can do this all day' is first said by Rogers in this film. It earned about $370 million worldwide. The Reel is a review with clips; the opinions in it are the Reel's.
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Captain America, the first Avenger. Released in 2011, this was a solid entry in the MCU that took us back to the 1940s. Chris Evans embodies Steve Rogers perfectly, capturing his courage and determination. The film's World War II settings adds a unique flavor, blending war drama with superhero adventure. Hugo Weaving's Red Skull also makes for a memorable villain, and the supporting cast, including Hayley Atwell as Peggy Carter, really pulled her weight. The movie does a great job of building Steve's character, leading to an emotional climax that sets up his role in the Avengers. It's a nostalgic and heartfelt origin story that stands out in the MCU. NOW YOU KNOW!
The God of Thunder: Kenneth Branagh, Known for Shakespeare, Directed Thor
Thor, directed by Kenneth Branagh, was released in the U.S. on May 6, 2011, as the fourth film of the Marvel Cinematic Universe. Chris Hemsworth plays the Norse-inspired god, banished from Asgard to Earth, with Tom Hiddleston as his brother Loki and Natalie Portman as Jane Foster. Branagh, known for Shakespeare adaptations, gave the film a classical tone. It earned about $449 million worldwide. The Reel is a review with clips; the opinions in it are the Reel's.
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Thor, released in 2011, brought a whole new dimension to the Marvel Cinematic Universe. Quite literally, Chris Hemsworth's portrayal of the God of Thunder was spot on, mixing arrogance with charm and a sense of growth as well. The film's strength lies in its blend of Norse mythology with superhero action, and Tom Hiddleston's Loki quickly became a fan-favored villain. Directed by Kenneth Branagh, the movie's Shakespearean tones and epic settings stood out. While it has its flaws, like pacing issues and a somewhat rushed romance, Thor successfully introduced us to Asgard and laid the foundation for the cosmic side of the MCU. NOW YOU KNOW!
The Saga Continues: Iron Man 2 Introduced Scarlett Johansson's Black Widow
Iron Man 2, directed by Jon Favreau, was released in the U.S. on May 7, 2010, as the third film of the Marvel Cinematic Universe. Robert Downey Jr. returned as Tony Stark, Scarlett Johansson debuted as Natasha Romanoff (Black Widow), and Don Cheadle took over the role of James Rhodes, who becomes War Machine. Mickey Rourke played the villain Ivan Vanko. The film earned about $624 million worldwide. The Reel is a review with clips; the opinions in it are the Reel's.
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Iron Man 2 didn't quite capture the magic of the first film, but it still had plenty to offer. Robert Downey Jr. continues to shine as Tony Stark, bringing his signature wit and charm. The introduction of Scarlett Johansson as Black Widow, and Don Cheadle taking over as War Machine were definite highlights. The film juggles multiple plotlines, which can feel a bit crowded, but it does a great job expanding the Marvel universe and setting up future films. Not the strongest entry, but it's entertaining and essential for the larger MCU narrative. NOW YOU KNOW!
The Strongest There Is: Edward Norton Played Bruce Banner Before Mark Ruffalo Took Over
The Incredible Hulk, directed by Louis Leterrier and starring Edward Norton as Bruce Banner, was released in the U.S. on June 13, 2008, as the second film of the Marvel Cinematic Universe. Banner hides from the U.S. military while seeking a cure, and the film climaxes in a fight with the Abomination, played by Tim Roth. Robert Downey Jr. appears as Tony Stark in a closing scene. Mark Ruffalo took over the role from The Avengers (2012) onward. The Reel is a review with clips; the opinions in it are the Reel's.
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THE INCREDIBLE HULK. This movie often gets overlooked in the Marvel Cinematic Universe, but it deserves some credit. Edward Norton brought a brooding intensity to Bruce Banner and the action scenes were pretty thrilling! Especially the Hulk versus Abomination showdown. While it didn't quite hit the mark for everyone, it laid important groundwork for Hulk's character in the MCU. Plus the cameo by Tony Stark in the end hinted at the interconnected universe, keeping fans excited for the next steps. Not a perfect film by any means but it had its moments and contributed to the Marvel picture. NOW YOU KNOW!
The Birth of the MCU: Iron Man Launched the Marvel Cinematic Universe in 2008
Iron Man, directed by Jon Favreau and starring Robert Downey Jr. as Tony Stark, was released in the U.S. on May 2, 2008, as the first film of the Marvel Cinematic Universe. It follows a weapons-maker who builds an armored suit after being captured. The film earned about $585 million worldwide. Its post-credits scene, in which Samuel L. Jackson's Nick Fury mentions the 'Avenger Initiative', set up the shared universe. The Reel is a review with clips; the opinions in it are the Reel's.
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Released in 2008, Iron Man really set the stage for the Marvel Cinematic Universe. Robert Downey Jr. as Tony Stark was an absolute masterstroke, and his performance brought so much charisma and complexity to the character. The film really nailed the balance between humor and serious moments, and it made Tony's transformation from a careless billionaire to a selfless hero really believable and engaging. On top of that, the visual effects, especially the Iron Man suit, were pretty cutting edge and still hold up well today. And, of course, who could forget the game-changing post-credits scene with Nick Fury, the one that started it all. It did a great job of teasing the formation of the Avengers and sparked some excitement for what was to come. In a lot of ways, this movie didn't just introduce a single hero. It launched an entire universe. NOW YOU KNOW!
Harder Than Before: Steel Is Iron With a Small Amount of Carbon Added
Steel is an alloy of iron with a small amount of carbon, usually less than 2%, and often other elements. Most steel is made by smelting iron ore with coke in a blast furnace and then refining the iron in a basic oxygen furnace; much of the rest is made by melting scrap in electric arc furnaces. The steel is cast, then rolled or forged into shapes, and finished with heat and surface treatments. According to the World Steel Association, world production was about 1.89 billion tonnes in 2023. The footage shows furnaces, casting and rolling mills, with the presenter.
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Steel is one of the most widely used materials in the world, essential for buildings, infrastructure, vehicles, and more. The production of steel begins with the extraction of iron ore, which is then processed into iron in a blast furnace. The iron is then combined with carbon and other alloying elements to create steel. This steel is formed into various shapes and sizes through processes like casting, rolling, and forging. The final steel products undergo finishing processes such as heat treatment and surface treatment before being ready for use. With over 1.8 billion tons of steel produced annually worldwide, the steel industry plays a vital role in the global economy and infrastructure development. NOW YOU KNOW!
Spinning a Yarn: Every Fabric Starts as Fibers Twisted Into Yarn
Textiles are made from natural fibers such as cotton, wool and silk, or synthetic fibers such as polyester and nylon. Fibers are cleaned and combed, then spun, which twists them into yarn. Yarn is woven on looms, knitted, or the fibers are bonded into nonwovens to make fabric. The fabric is then dyed or printed and finished. Polyester is now the most produced fiber worldwide. The footage shows spinning, weaving and dyeing in textile mills, with the presenter.
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Textiles are a fundamental part of our everyday lives, from the clothes we wear to the materials used in our homes and businesses. The production of textiles begins with a selection of raw materials, which can include natural fibers such as cotton, wool, and silk, or synthetic fibers like polyester and nylon. These fibers are then spun into yarn, which is then woven, knitted, or otherwise processed into fabric. The fabric is dyed or printed with patterns and designs, before being finished and prepared for use. Textile production is a highly complex and labor-intensive process that requires precision and attention to detail. With the rise of sustainable and eco-friendly practices, the textile industry is evolving to meet the demands of a more conscious consumer base, driving innovation and creativity in the process. NOW YOU KNOW!
Let's Mix It Up: Concrete Is the Most Widely Used Building Material in the World
Concrete is a mix of cement, aggregates such as sand and gravel, and water. The cement reacts with water in a process called hydration, binding the aggregates into a hard mass; it hardens by this reaction rather than by drying, which is why it is kept moist while it cures. Strength depends on the proportions, especially the water-to-cement ratio, and on mixing and curing. Ready-mixed concrete is delivered in drum trucks and poured into formwork. It is the most widely used building material, with production commonly estimated at more than 10 billion tonnes a year. The footage shows concrete plants and construction, with the presenter.
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Concrete is the most widely used construction material in the world, known for its strength, durability, and versatility. The production of concrete begins with the combination of cement, aggregates, such as sand or gravel, and water. These ingredients are mixed together to form a paste that hardens over time to create a solid mass. The quality of concrete depends on the proportion and quality of its components, as well as the mixing and curing processes. Once mixed, the concrete is transported to the construction site and poured into molds or formwork, where it is allowed to set and cure. With over 10 billion tons of concrete produced annually worldwide, this essential material plays a crucial role in shaping the fabricated environment around us. NOW YOU KNOW!
No.1 or No.2: Pencil 'Lead' Is Actually Graphite Mixed With Clay
A wooden pencil's core is not lead but a mix of graphite and clay; more clay makes a harder lead. In the usual method, slats of wood, often incense cedar, are grooved, the leads are laid in and glued, and a second grooved slat goes on top to form a 'sandwich', which is cut into individual pencils. The pencils are shaped, painted and stamped with a brand and grade. In the U.S. the No. 2 grade, roughly HB, is the standard writing pencil. Commonly cited estimates put world output at 14 to 15 billion pencils a year. The footage shows pencil factories, with the presenter.
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Pencils are simple, yet essential tools, used by people of all ages around the world. Pencil production starts with a selection of high-quality wood, usually cedar, which is cut into slats. These slats are then coated with a clay mixture and dried. The graphite core, made from a mix of graphite and clay, is inserted into the slats, and several slats are glued together to form a pencil sandwich. The sandwich is then cut into individual pencils, which are shaped, painted, and stamped with a brand and hardness grade. Over 15 billion pencils are produced annually worldwide, with the majority of production taking place in China, followed by Germany and the United States. The production process for a single pencil can take up to five days. From wood selection to packaging, pencil production is a fascinating process that combines craftsmanship with modern manufacturing techniques. As demand for pencils remains strong, manufacturers continue to innovate to improve efficiency and sustainability in the production process. NOW YOU KNOW!
The Future Is Now: Every Chip Starts as a Thin Slice of Silicon Called a Wafer
Computer chips, or integrated circuits, are made on wafers of very pure silicon. Each wafer is coated with a light-sensitive photoresist and exposed to ultraviolet light through a mask in a step called photolithography, which prints the circuit pattern. Etching removes unwanted material, and the steps of deposition, doping, lithography and etching are repeated many times to build up billions of transistors. Finished wafers are tested and cut into individual dies, which are packaged into chips. The footage shows chip fabs and cleanrooms, with the presenter.
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Computer chips, also known as integrated circuits, are at the heart of modern electronics, powering everything from smartphones to supercomputers. The production of computer chips begins with the design and fabrication of a silicone wafer, which serves as the foundation for the chip. The silicone wafer is then coated with a photosensitive material and exposed to ultraviolet light through a mask, creating a pattern on the wafer. This pattern defines the circuitry of the chip. The wafer is then etched to remove the unwanted material, leaving behind the desired circuitry. The chips are then tested, packaged, and ready for use in electronic devices, with the demand for faster, more powerful, and energy efficient chips on the rise. The semiconductor industry continues to innovate, driving advancements in technology, and shaping the future of electronics. NOW YOU KNOW!
Haha Car Go Brr: Car Bodies Start as Steel and Aluminum Sheets Pressed Into Shape
Mass car production begins with design and engineering, then sourcing materials such as steel, aluminum and plastics. Sheets of metal are stamped into panels, which robots weld into a body-in-white; parts are also molded and cast. The body is painted, then the powertrain, wiring, interior and trim are added on the assembly line by robots and workers. Finished cars go through inspections and road tests before shipping. Around 90 million motor vehicles were produced worldwide in 2023. The footage shows car factories and assembly lines, with the presenter.
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Cars are marvels of modern engineering, with each vehicle requiring a complex and intricate manufacturing process. Car production begins with the design and engineering of the vehicle, followed by the sourcing of raw materials such as steel, aluminum, and plastics. These materials are then formed into various components, including the chassis, body panels, and interior parts, through processes like stamping, molding, and casting. The components are then assembled on the production line where specialized robots, and skilled workers work together to build the vehicle. Finally, each car undergoes rigorous testing to ensure quality and safety standards are met before it is ready to be shipped to dealerships. With millions of cars produced each year, the automotive industry plays a significant role in economies around the world, driving innovation in the future. NOW YOU KNOW!
Energizer: Lithium-Ion Batteries Start With Lithium, Cobalt, Nickel and Graphite
Lithium-ion batteries power phones, laptops and electric vehicles. Making them starts with mining and refining materials such as lithium, nickel, cobalt, manganese and graphite. These become the anode (usually graphite) and cathode (a lithium metal oxide), which are coated onto foils, combined with a separator and electrolyte, and sealed into cells. Cells are charged for the first time, aged and tested, then assembled into modules and packs. China dominates production, with most of the world's cell manufacturing capacity in the early 2020s. The footage shows battery factories and assembly lines, with the presenter.
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Batteries are ubiquitous in our modern world, powering everything from smartphones to electric vehicles. DID YOU KNOW? The production process begins with the extraction and processing of raw materials like lithium, cobalt, nickel, and graphite. These materials are then used to create the key components of batteries, the anode, cathode, and electrolyte. These components are assembled into cells, which are rigorously tested to ensure quality and performance. Once tested, the cells are packaged into battery packs, ready for use. Each year over 5 billion lithium-ion batteries are produced globally to meet the growing demand for electric vehicles and renewable energy storage. China leads the world in battery production, accounting for over 72% of global production in 2020, with the electric industry expected to be over 1000 GWh capacity by 2025. The demand for batteries continues to rise, driving advancements in production processes and technology. NOW YOU KNOW!
Believe It!: Naruto Uzumaki Dreams of Becoming Hokage
Naruto is a manga by Masashi Kishimoto, serialized from 1999 to 2014, adapted as an anime from 2002 and continued as Naruto Shippuden from 2007. Naruto Uzumaki, an outcast in the Hidden Leaf Village because the Nine-Tailed Fox is sealed inside him, dreams of becoming Hokage, the village leader. 'Believe it!' is his catchphrase in the English dub. The story continues in Boruto. The Reel is a review with clips; the opinions in it are the Reel's.
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Naruto, a seminal anime and manga series by Masashi Kishimoto, has become a cornerstone of the genre, inspiring an entire generation with its captivating tale of a young ninja's journey towards becoming the strongest ninja and leader of his village, the Hokage. Born as an outcast and harboring the powerful nine-tailed fox spirit within him, Naruto Uzumaki's story is one of perseverance, friendship, and the quest for recognition. Set in the vibrant world of ninjas with their unique powers, the series explores themes of loneliness, acceptance, and the struggles of achieving one's dreams. Through battles that test the limits of his strength and character, Naruto forms deep bonds with his comrades in the Leaf Village, confronting enemies and dark forces that threaten their way of life. Naruto's blend of thrilling action, deep storytelling, and heartwarming moments has not only defined it as a beloved classic but also as a cultural phenomenon, spawning sequels like Naruto Shippuden and Boruto, continuing the legacy of the ninja world. Its message that hard work, camaraderie, and belief in oneself can overcome any adversity continues to resonate with fans around the globe. NOW YOU KNOW!
Mobile Suit Gundam: Mobile Suit Gundam Premiered in 1979
Mobile Suit Gundam, created by Yoshiyuki Tomino and studio Sunrise, premiered in April 1979. Set in the Universal Century calendar, it follows teenage pilot Amuro Ray in the RX-78-2 Gundam during the war between the Earth Federation and the space colonies of the Principality of Zeon. It launched a franchise of sequels, models and spin-offs, and helped define 'real robot' mecha stories. The Reel is a review with clips; the opinions in it are the Reel's.
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Gundam is an iconic series and a cornerstone of the mecha genre that has fascinated fans around the world since its debut in 1979. If you're into giant robots and epic space battles, this franchise is definitely for you. Gundam isn't just about cool mechs duking it out in space, although, let's be honest, that's a huge part of its charm. What really sets Gundam apart is how it tackles complex themes like war, peace, and the human condition. Each series explores these issues through intense, often philosophical narratives where the gigantic mobile suits known as Gundams are tools for much larger battles. The original series, Mobile Suit Gundam, introduced us to the Universal Century, a futuristic era where humanity has colonized space and is divided into the Earth Federation and the rebellious principality of Zeon. The story revolves around Amuro Ray, a young pilot who becomes the key to victory with his Gundam. This set the stage for numerous sequels and spin-offs, each adding layers to the expansive Gundam universe. NOW YOU KNOW!
FIGHT!!!: Humanity Hides Behind Giant Walls From Man-Eating Titans
Attack on Titan is a manga by Hajime Isayama, serialized from 2009 to 2021, adapted as an anime from 2013 to 2023. The last humans live inside three huge walls to escape giant man-eating Titans. After a Titan breaches the wall and kills his mother, Eren Yeager joins the Survey Corps with Mikasa Ackerman and Armin Arlert, uncovering the truth about the Titans. The Reel is a review with clips; the opinions in it are the Reel's.
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Attack on Titan, a relating series created by Hajime Isayama, plunges viewers into a world besieged by colossal giants known as Titans. Humanity, on the brink of extinction, cowers behind massive walls and a desperate bid for survival. The story follows Eren Yeager, a young man who vows to exterminate the Titans after witnessing the destruction of his hometown and the tragic loss of his mother. Set in a dystopian world filled with mystery and despair, Attack on Titan explores themes of freedom, the harsh realities of war, and the human spirit's indomitable will to fight against seemingly insurmountable odds. Eren, alongside his friends Mikasa Ackerman and Armin Arlert, joins the battle against the Titans, uncovering deep-seated corruption and the shocking truth behind the Titans origins. With its intense action, complex characters, and moral dilemmas, Attack on Titan has gained acclaim worldwide, captivating audiences with its dark storytelling and breathtaking animation. NOW YOU KNOW!
A 1,000 Year Blood War: Ichigo Kurosaki Can See Ghosts
Bleach is a manga by Tite Kubo, serialized from 2001 to 2016, adapted as an anime from 2004 to 2012. Teenager Ichigo Kurosaki, who can see ghosts, gains the powers of a Soul Reaper and fights Hollows, evil spirits. The final arc, the Thousand-Year Blood War, was adapted as an anime starting in 2022. The Reel is a review with clips; the opinions in it are the Reel's.
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Bleach, the electrifying anime and manga series created by Tite Kubo, transports viewers into a dynamic world where soul reapers wield their swords against malevolent spirits known as hollows. At the heart of this saga is Ichigo Kurosaki, a teenager with the uncanny ability to see ghosts. His life takes a dramatic turn when he accidentally obtains the powers of a soul reaper, thrusting him into the spectral conflicts between the living and the afterlife. Set against the backdrop of the soul society, a realm beyond our own, Bleach explores themes of duty, friendship, and the struggle between good and evil. Ichigo and his companions, each with their unique abilities, faced off against formidable foes, uncovering mysteries and personal histories that intertwine their destinies. Renowned for its compelling characters, intricate plot lines, and epic battles that blend Japanese mythology with supernatural adventure, Bleach has carved its niche as a mainstay of anime culture. Its legacy continues to endure, captivating fans with its blend of action, emotion, and the relentless pursuit of justice in the face of adversity. NOW YOU KNOW!
Shinigami Love Apples: In Death Note, Writing a Name in a Notebook Kills That Person
Death Note is a manga written by Tsugumi Ohba and illustrated by Takeshi Obata, serialized from 2003 to 2006 and adapted as an anime in 2006. Student Light Yagami finds a notebook dropped by the shinigami (death god) Ryuk that kills anyone whose name is written in it. Calling himself Kira, he kills criminals, and is hunted by the detective L. Ryuk is fond of human apples. The Reel is a review with clips; the opinions in it are the Reel's.
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DEATH NOTE, a groundbreaking anime and manga series and one of my personal favorites, has captivated audiences worldwide with its dark themes and moral complexities. Created by Tsugumi Ohba and Takeshi Obata, the story revolves around Light Yagami, a high school student who stumbles upon a mysterious notebook with the power to kill anyone whose name is written in it. With the Death Note in hand, Light embarks on a crusade to rid the world of criminals under the alias Kira. As Light's vigilantism spirals into a complex game of cat and mouse, he finds himself opposed by L, a brilliant detective determined to unmask Kira and bring him to justice. The series is a gripping exploration of justice, power, and morality, raising questions about the ethics of punishment and the nature of human ambition. With its intricate plot, well-developed characters and psychological depth, Death Note has left a lasting impact on pop culture, inspiring numerous adaptations and debates among its fans. NOW YOU KNOW!
He Keeps Getting Stronger: Solo Leveling Began as a Korean Web Novel
Solo Leveling is a South Korean web novel by Chugong, first published in 2016, adapted into a webtoon in 2018 and an anime by A-1 Pictures in January 2024. Sung Jin-woo, an E-rank hunter, the weakest class, survives a deadly dungeon raid and gains a game-like system that lets him level up alone. The Reel is a review with clips; the opinions in it are the Reel's.
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Solo Leveling is a Korean webtoon that's taken the world of manga and anime by storm. If you're a fan of epic battles, unique leveling systems, and stories where the underdog rises to the top, you're gonna love this one. Solo Leveling follows the journey of Sung Jin Woo, an E-rank hunter, basically the weakest of the weak in a world where humans with special abilities fight monstrous creatures pouring out of mysterious gates. But everything changes for Jin Woo. After a particularly brutal and nearly fatal dungeon raid, he gains a unique ability that allows him to see a quest log only he can interact with, enabling him to level up in strength much like a character in a video game. This is where Solo Leveling is a cut above, with its stunning artwork and addictive growth of its protagonist. Watching Jin Woo evolve from a weak hunter to one of the strongest is a satisfying journey with intense battles, strategic depth, and a cool array of monsters and allies. The series does a fantastic job of mixing action with personal growth and world building, making you cheer for Jin Woo as he faces seemingly impossible challenges. NOW YOU KNOW!
RIP Akira Toriyama: Akira Toriyama Created Dragon Ball
Akira Toriyama (1955 to 2024) was a Japanese manga artist who created Dr. Slump and Dragon Ball, serialized from 1984 to 1995. Dragon Ball Z, the anime adaptation of the later part of his manga, aired from 1989 to 1996, following Goku and his friends against villains such as Vegeta, Frieza, Cell and Majin Buu, and popularized the Kamehameha and Super Saiyan transformations. He also designed characters for the Dragon Quest video games. He died on March 1, 2024; the death was announced on March 8. The Reel is a review with clips; the opinions in it are the Reel's.
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DRAGON BALL Z, the iconic anime series that has defined a genre and captured the hearts of millions worldwide, continues to be a cornerstone of pop culture. Following the adventures of Goku and his friends, Dragon Ball Z takes us on an epic journey of battle and the relentless pursuit of strength. Created by Akira Toriyama, the series debuted in 1989 and became an instant phenomenon, setting the standard for all action anime that followed. From the intense battles against foes like Vegeta, Frieza, Cell and Majin Buu, to the introduction of now iconic techniques like the Kamehameha and Super Saiyan transformations, Dragon Ball Z is more than just a show; it's a global phenomenon! The series not only explores themes of heroism and sacrifice but also the importance of family and perseverance. NOW YOU KNOW!
KICK BACK!: Denji Becomes Chainsaw Man by Merging With His Devil Dog, Pochita
Chainsaw Man is a manga by Tatsuki Fujimoto, first serialized in 2018, adapted by studio MAPPA as an anime in 2022. Denji, a young devil hunter crushed by his late father's debt, is killed and revived by fusing with his chainsaw devil-dog Pochita, becoming a hybrid with chainsaws for arms and a head. The anime's opening song, 'Kick Back', is by Kenshi Yonezu. The Reel is a review with clips; the opinions in it are the Reel's.
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Chainsaw Man is a wild and bizarre anime that's as thrilling as it is unique. If you're all about high octane action blended with dark humor and supernatural chaos, then this series is for you. Chainsaw Man follows the story of Denji, a down-on-his-luck young man with a debt-ridden life, who survives by hunting devils alongside his devil-dog partner, Pochita. Things take a gruesome yet fascinating turn when Denji is betrayed and killed, only to be resurrected through a contract with Pochita, transforming him into the Chainsaw Man, a devil-human hybrid with chainsaws for hands and a head. This series pushes the boundaries of the shounen genre. It's not just about the fights, although those are spectacularly gory and well-animated. It's also about exploring deep themes like poverty, desire, and what it means to be human. Denji's journey is heart-wrenching and hilarious, filled with as many moments of introspective sadness as there are absurd battles against devilish foes. NOW YOU KNOW!
Half-Human Half-Dog Demon: Inuyasha's Heroine Falls Through a Well Into Feudal Japan
Inuyasha is a manga by Rumiko Takahashi, serialized from 1996 to 2008, adapted as an anime from 2000. Schoolgirl Kagome Higurashi falls through a well at her family's shrine into feudal Japan, where she meets the half-dog demon Inuyasha. With a monk, a demon slayer and a young fox demon, they hunt the shards of the shattered Shikon Jewel. The Reel is a review with clips; the opinions in it are the Reel's.
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Inuyasha is a beloved anime that blends action, fantasy, and romance into one epic adventure. If you love time-traveling tales and mythical creatures, Inuyasha is a must-watch. The story really kicks off when Kagome Higurashi, a modern-day high school student, falls into her family's ancient well and emerges in feudal Japan. Right out of the gate, she encounters Inuyasha, a half-demon who's both rough around the edges and fiercely loyal. Together, they embark on a quest to collect the shards of the Shikon Jewel, a powerful gem that can grant great power to demons. What makes Inuyasha so engaging is not just its thrilling battles and complex lore, but also the dynamic relationships between characters. Our heroes, including a lecherous monk, a demon slayer, and a fox demon, all bring their own backstories and ambitions to the mix, creating this rich tapestry of interactions and growth. Throughout its run, Inuyasha explores themes of love, betrayal, and redemption, beautifully illustrated landscapes, and intense fight scenes. NOW YOU KNOW!
You Are My Special: Yuji Itadori Swallows a Cursed Finger to Save His Friends
Jujutsu Kaisen is a manga by Gege Akutami, serialized from 2018 to 2024, adapted by MAPPA as an anime from 2020. High school student Yuji Itadori swallows a cursed finger belonging to Ryomen Sukuna, the King of Curses, and becomes his host, joining Tokyo Jujutsu High to train as a sorcerer who fights curses. The Reel is a review with clips; the opinions in it are the Reel's.
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Jujutsu Kaisen is a hit anime that's really taken the scene by storm. If you haven't checked it out yet, you're in for a thrilling ride. The story kicks off with Yuji Itadori, a seemingly average high school kid with extraordinary physical abilities. Things get kinda crazy for Yuji when he swallows a cursed object, a rotting finger, and becomes the host for a powerful curse named Sukuna. Pretty gross, but also kinda cruel. This twist of fate throws him into the world of Jujutsu sorcerers, a secret group who use their powers to combat malevolent curses that threaten humanity. The stakes here are sky high, and Yuji's new life is filled with dangerous battles, strategic maneuvers, and a bit of high school drama. What really makes Jujutsu Kaisen stand out isn't just its intense action and dark fantasy elements, it's this deep dive into the value of life and what it means to truly live. All of the characters, from the quirky to the badass, bring this vivid world to life, each adding layers to the intriguing plot. NOW YOU KNOW!
Is This Equivalent Exchange: Edward and Alphonse Elric Pay a Terrible Price for One Experiment
Fullmetal Alchemist is a manga by Hiromu Arakawa, serialized from 2001 to 2010, adapted as two anime series (2003 and Fullmetal Alchemist: Brotherhood, 2009). Brothers Edward and Alphonse Elric try to bring their mother back with alchemy; Edward loses a leg and an arm, and Alphonse his whole body, his soul bound to a suit of armor. They seek the Philosopher's Stone to restore themselves. Alchemy in the story follows the law of equivalent exchange: to gain something, something of equal value must be lost. The Reel is a review with clips; the opinions in it are the Reel's.
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Fullmetal Alchemist. A masterpiece of storytelling woven by Hiromu Arakawa is an anime and manga series that delves into the heart of alchemy, where science and magic converge. It follows the journey of two brothers, Edward and Alphonse Elric, who seek a philosopher's stone to restore their bodies after a forbidden alchemy experiment goes tragically wrong. Set in a world where alchemy is the foremost science, the Elric brothers' quest is fraught with danger, moral dilemmas, and the pursuit of redemption. Their journey brings them face to face with militaristic nations, ancient conspiracies, and deep philosophical questions about the nature of existence and the cost of ambition. Fullmetal Alchemist explores themes of brotherhood, sacrifice, and the consequences of power, set against a backdrop of political intrigue and a battle against an unseen enemy. With its richly developed characters and complex narrative, Fullmetal Alchemist is not just an adventure story, but a profound exploration of the human condition, leaving a lasting impact on its audience. NOW YOU KNOW!
Le Petit Caporal: Napoleon Crowned Himself Emperor of the French in 1804
Napoleon Bonaparte (1769 to 1821) rose through the French Revolutionary army, seized power in 1799 and crowned himself Emperor of the French in December 1804. His wars reshaped Europe until his defeats in 1814 and at Waterloo in 1815, after which he was exiled to Saint Helena. The Napoleonic Code of 1804 influenced civil law in many countries. 'Le Petit Caporal', the little corporal, was an affectionate nickname from his soldiers; he was about 1.69 m tall, roughly average for a Frenchman of his time. The footage shows illustrations of Napoleon, with the presenter.
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Napoleon Bonaparte, an intriguing figure whose military genius and political acumen shaped the course of European history. Rising from the ashes of the French Revolution, he crowned himself Emperor of France in 1804, reshaping the continent through a series of relentless conquests. Napoleon's legal codification, the Napoleonic Code, influenced legal systems worldwide. DID YOU KNOW? Despite popular depictions of Napoleon as a man of diminutive stature, he was actually of average height for his time. His legacy is a complex tapestry of military strategy, governance, and the quest for power. NOW YOU KNOW!
SHŌGUN: Tokugawa Ieyasu's Victory at Sekigahara Came in 1600
Tokugawa Ieyasu (1543 to 1616) won the Battle of Sekigahara in 1600 and was appointed shogun in 1603, founding the Tokugawa shogunate. His successors ruled Japan from Edo, now Tokyo, until 1868, a period of about 265 years known as the Edo period. The era brought internal peace after more than a century of civil war, strict social order, economic growth and policies that sharply limited foreign contact. The footage shows illustrations of Ieyasu and Edo-era Japan, with the presenter.
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Tokugawa Ieyasu was the formidable shogun who founded the Tokugawa shogunate, an era that would endure for over 250 years. After his decisive victory at the Battle of Sekigahara. Tokugawa Ieyasu centralized power, bringing an end to civil war and ushering in a period of peace and stability known as the Edo Period. His legacy is one of political savvy, cultural flourishing, and economic growth. Establishing a framework that would influence Japan for centuries, DID YOU KNOW? The Tokugawa era, marked by its strict social and isolationist policies, laid the foundations for modern Japan. Making Tokugawa Ieyasu a pivotal figure in the nation's history, celebrated for his leadership and enduring impact on Japanese society. NOW YOU KNOW!
Khan of Khans: Genghis Khan Was Born Temüjin Around 1162
Genghis Khan, born Temüjin around 1162, united the Mongol tribes and was proclaimed Great Khan in 1206. He led campaigns across northern China and Central Asia that were both innovative and highly destructive, and introduced a legal code, a postal relay system and protections for trade along routes such as the Silk Road. He died in 1227. Under his successors the Mongol Empire grew into the largest contiguous land empire in history. The footage shows illustrations of Genghis Khan and the steppe, with the presenter.
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Genghis Khan, born Temujin, rose from humble beginnings to establish the largest contiguous empire in history. As the founder of the Mongol Empire, he was a brilliant military strategist and a fearsome warrior known for his innovative tactics and merciless approach to warfare. Genghis Khan's legacy extends beyond conquest as he forged new laws, promoted trade and connected diverse cultures through the Silk Road. His reign left an indelible mark on the course of history, shaping the political and social landscapes of the vast territories he dominated. Genghis Khan remains a towering figure, symbolizing the complex interplay of barbarism and governance, fear and admiration, and the eternal impact of one man's unyielding will to conquer and unify. NOW YOU KNOW!
The Famine Queen: Victoria Reigned for 63 Years, From 1837 to 1901
Queen Victoria ruled the United Kingdom from 1837 until her death in 1901, a reign of 63 years surpassed among British monarchs only by Elizabeth II. The Victorian era saw industrial, scientific and political change and the expansion of the British Empire; from 1876 she was also Empress of India. She is associated with strict moral standards but was a keen dancer in her youth. The nickname 'the Famine Queen' was used by the Irish activist Maud Gonne in a 1900 article, criticizing her government's record during the Great Famine of the 1840s; the Reel's voiceover does not discuss it. The footage shows illustrations of Victoria and Victorian Britain, with the presenter.
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Queen Victoria is Britain's second longest-reigning monarch; her rule from 1837 to 1901 was known as the Victorian era, and it was a period of industrial, cultural, political and scientific change within the United Kingdom alongside a vast expansion of the British Empire. Victoria was known for her strict standards of morality and personal modesty. She became a symbol of British imperial pride and strict societal codes. DID YOU KNOW? Despite her serious public image, Victoria had a passion for dancing and even took to the dance floor at grand balls. Her legacy endures in numerous historical, cultural and institutions, embodying an age of progress. NOW YOU KNOW!
The Virgin Queen: Elizabeth I Never Married, Which Earned Her the Name Virgin Queen
Elizabeth I ruled England and Ireland from 1558 until her death in 1603, the last monarch of the Tudor dynasty. Her reign is often called the Elizabethan era or a golden age, with the theater of Shakespeare and Marlowe, overseas exploration and the defeat of the Spanish Armada in 1588. She never married, and was celebrated as the Virgin Queen. Contemporaries noted her command of languages including Latin, Greek, French and Italian. The footage shows illustrations of Elizabeth, Tudor London and the Armada, with the presenter.
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Elizabeth I was the indomitable queen who ruled England from 1558 to 1603. Her reign, known as the Golden Age, was marked by flourishing arts, exploration and the defeat of the Spanish Armada in 1588, which bolstered England's naval power. Elizabeth's savvy political maneuvers, unwavering resolve and iconic refusal to marry earned her the title of the Virgin Queen, forever shaping her legacy. DID YOU KNOW? Elizabeth was a polyglot, fluent in six languages, showcasing her intelligence and diplomatic prowess. Her reign not only solidified England's global standing but also left an enduring cultural and political legacy. NOW YOU KNOW!
Russia's Greatest Empress: Catherine Came to Power in a Coup Against Her Own Husband
Catherine II, known as Catherine the Great, was born a German princess in 1729 and married the future Peter III of Russia. In 1762, months after he took the throne, a coup overthrew Peter and Catherine became empress, ruling until her death in 1796, longer than any other female ruler of Russia. Her reign saw territorial expansion, Enlightenment-era reforms, and patronage of the arts; the art collection she began in 1764 became the Hermitage Museum. She was a keen rider and often rode astride rather than sidesaddle. The footage shows illustrations of Catherine, her court and Russia, with the presenter.
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Catherine the Great is one of history's most powerful female rulers. Ascending to the throne after the coup that overthrew her husband Peter III, Catherine's reign from 1762 to 1796 was a time of significant expansion, enlightenment and reform. She transformed Russia into a cultural and political powerhouse, embracing western ideas while expanding its borders. Known for her art patronage, Catherine also founded the Hermitage Museum. DID YOU KNOW? Catherine was an accomplished horsewoman, often riding astride rather than sidesaddle, defying the conventions of her time. Her legacy is a testament to her formidable intelligence, political acumen, and incredible resolve. NOW YOU KNOW!
The Last Czar: Nicholas II Became Russia's Emperor in 1894
Nicholas II was the last Emperor of Russia, reigning from November 1894 until his abdication in March 1917. His reign included rapid industrial growth, defeat in the Russo-Japanese War of 1904 to 1905, the 1905 Revolution and Russia's entry into the First World War. Wartime losses and shortages fed the February Revolution of 1917, and he abdicated. In July 1918, Bolshevik forces shot Nicholas, his wife Alexandra, their five children and four attendants in Yekaterinburg. The Russian Orthodox Church canonized the family in 2000. The footage shows illustrations of Nicholas II, his family and Russia, with the presenter.
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Nicholas II was the last emperor of Russia; his rule was marked by the end of the Romanov dynasty. Ascending to the throne in 1894, Nicholas' leadership faced immense challenges, including political unrest, a disastrous defeat in the Russo-Japanese War, and the turmoil of WWI. Despite his dedication, Nicholas struggled to address the demands of a changing Russia, leading to the 1917 revolution that dramatically ended his reign and the imperial era. His tragic execution alongside his family in 1918 marked a poignant close to a tumultuous chapter in Russian history. Remember Nicholas II not just as a ruler but as a symbol of an empire's final days. NOW YOU KNOW!
Charlemagne: Charlemagne Championed Schools Even Though He Struggled to Write
Charlemagne (Charles the Great, about 747 to 814) was King of the Franks from 768 and King of the Lombards from 774. On Christmas Day 800, Pope Leo III crowned him Emperor of the Romans, a title later seen as the start of the Holy Roman Empire. His reign saw the Carolingian Renaissance, a revival of learning, art and religious scholarship through the Church, including new schools and the standardized Carolingian minuscule script. His biographer Einhard wrote that he tried to learn to write late in life but had little success. The footage shows illustrations of Charlemagne and his court, with the presenter.
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Charles the Great, also known as Charlemagne, was a king who became the first Holy Roman Emperor and was a legendary figure in European history. He is renowned for his role in the Carolingian Renaissance, a revival of art, religion, and culture through the auspices of the church. DID YOU KNOW? Charlemagne was illiterate for much of his life, yet he championed education and learning, establishing schools and encouraging scholarly pursuits. His legacy is a testament to the enduring impact of his vision for a united Europe under the banner of learning and Christian faith. NOW YOU KNOW!
Canute the Great: Canute Ruled England, Denmark and Norway at Once
Canute the Great (Cnut) was a Danish prince who became King of England in 1016, King of Denmark in 1018 and King of Norway in 1028, ruling all three until his death in 1035. Historians call this union the North Sea Empire. He kept peace in England for most of his reign, worked with the Church and English nobles, and supported trade across the North Sea. A later legend says he ordered the tide to stop to show his courtiers the limits of royal power. The footage shows illustrations of Canute and his court, with the presenter.
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King Canute, also known as Canute the Great, whose dominion stretched across the North Sea. As king of Denmark, England in the 11th century, Canute was a pivotal figure in Viking and medieval history. Throughout his rule he demonstrated diplomatic finesse and military His reign marked a period of relative peace, fostering trade and cultural exchange across his territories. NOW YOU KNOW!
Little Boot: Caligula's Nickname Means 'Little Boot' in Latin
Caligula, born Gaius Julius Caesar Germanicus in AD 12, was Rome's third emperor. His nickname, meaning 'little boot', came from the miniature soldier's boots he wore as a child in his father's army camps. He became emperor in AD 37 and was assassinated by members of the Praetorian Guard in January AD 41. Ancient writers such as Suetonius and Cassius Dio describe extravagant spending, cruelty and claims to divinity; modern historians note that these sources were hostile to him. According to Suetonius, he planned to make his horse Incitatus a consul. The footage shows illustrations of Caligula and Rome, with the presenter.
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Caligula's reign is one of the most infamous in Roman history. Ascending to power in AD 37, Caligula is often remembered for his eccentric and erratic behavior, which shocked and bewildered the Roman elite. From extravagant spending to declaring himself a god, his actions redefined excess in the Roman Empire. DID YOU KNOW? Caligula was so outlandish, in fact, that he once made his horse a senator, showcasing his peculiar sense of humor, or perhaps his disdain for the Senate. His reign, though short-lived, left an indelible mark on Roman history, illustrating both the extremes of imperial power, and the vulnerabilities of absolute authority. NOW YOU KNOW!
The Beast of Rome: Nero Competed at the Olympic Games and Was Declared the Winner
Nero was Roman emperor from AD 54 to 68. He was known for his love of performing, singing and acting in public, which Roman elites considered beneath an emperor. After the Great Fire of Rome in AD 64, the historian Tacitus wrote that rumors blamed Nero and that he in turn blamed and punished Christians. In AD 67 Nero competed at the Olympic Games, which were rescheduled for his visit; ancient sources say he was declared the winner of the chariot race even though he fell and didn't finish. He died by suicide in AD 68 after being declared a public enemy. Some early Christian writings associated him with the 'Beast' of the Book of Revelation. The footage shows reconstructions of Nero and Rome, with the presenter.
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Nero was one of Rome's most notorious emperors, who ruled from AD 54 to 68. Known for his artistic ambitions and extravagant lifestyle, Nero's tenure is marked by controversies, including the Great Fire of Rome, which many believe he blamed on the Christians to divert suspicion from himself. But beyond his infamous legacy, Nero was an avid patron of the arts, often performing in public himself, an unusual and criticized practice for a Roman emperor. DID YOU KNOW? Nero participated in the Olympic Games, ensuring his victory by having his competitors ousted. His reign, filled with drama and intrigue, remains a fascinating chapter in the annals of Roman history. NOW YOU KNOW!
The First Roman Emperor: Augustus Reportedly Wore Clothes Spun by His Own Family
Augustus, born Gaius Octavius in 63 BC, was the great-nephew and adopted son of Julius Caesar. After Caesar's assassination in 44 BC and years of civil war, he defeated Mark Antony and Cleopatra and became Rome's first emperor in 27 BC, ruling until his death in AD 14. His reign began the Pax Romana, about two centuries of relative peace. He used art, coins and building programs to shape his public image. The biographer Suetonius wrote that he lived modestly and usually wore clothes made at home by his wife, sister, daughter and granddaughters. The footage shows statues and reconstructions of Augustus and Rome, with the presenter.
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Augustus was Rome's first emperor, and he turned a republican turmoil into a monumental empire. Born Gaius Octavius, he climbed from his role as Julius Caesar's adoptive son to the pinnacle of Roman power, initiating the Pax Romana, a golden age of peace and prosperity. To the benefit of his politics, Augustus was a propaganda genius, using art and architecture to cement his image. Under his guidance, Rome expanded, culture flourished, and the economy boomed. Interestingly, despite his immense power, Augustus was known for his modest lifestyle, often wearing clothes spun by his wife and daughter. NOW YOU KNOW!
Earth's Harshest Biome: Tundra Soil Stays Frozen Year-Round Just Below the Surface
Tundra is a treeless biome where cold temperatures and short growing seasons limit plant growth. Arctic tundra rings the far north, and alpine tundra occurs on high mountains; small areas of Antarctic tundra exist too. Below the surface lies permafrost, ground that stays frozen for at least two years in a row. Mosses, lichens, sedges and dwarf shrubs grow there, and animals include caribou, Arctic foxes and many migratory birds that breed in summer. Permafrost holds large amounts of organic carbon, and warming that thaws it can release carbon dioxide and methane. The footage shows tundra landscapes behind the presenter.
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DID YOU KNOW? The tundra is a vast and stark landscape and it wraps around the Earth's northern and southern extremes. Characterized by its cold, arid conditions and permafrost, a permanently frozen layer beneath the surface, the tundra is a place where life clings to survival. Despite its harsh environment, the tundra is teeming with life from hearty vegetation like mosses and lichens, to resilient animals such as Caribou, Arctic foxes, and migratory birds. This fragile ecosystem plays a significant role in our planet's acting as a crucial carbon sink. Yet the tundra faces threats from climate change which is causing rapid permafrost melts and altering its delicate balance. NOW YOU KNOW!
Where Your Food Is Grown: Much of the World's Grain Grows on Plains
Plains are broad areas of flat or gently rolling land. Many have deep, fertile soils built up by rivers, glaciers or wind-blown loess, which makes them some of the world's most productive farmland; the North American Great Plains and the Eurasian steppe are major grain regions. Grasslands on plains support grazing animals such as bison in North America and antelope and gazelles in Africa and Asia. Floodplains along rivers absorb floodwaters and renew soils with fresh sediment. The footage shows plains, farmland and herds, with the presenter.
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DID YOU KNOW? plains are vast stretches of flat or gently rolling land, and they're among Earth's most fertile and significant landscapes. They serve as crucial agricultural hardlands, where nutrient-rich soils yield bountiful crops, supporting a significant portion of human food production. These expansive terrains are not only agricultural powerhouses, but are also critical habitats for diverse wildlife, offering grazing grounds for animals from bison to gazelles. Plains play a pivotal role in ecosystems, acting as natural floodplains and maintaining water cycles. Protecting and sustainably managing plains is vital for biodiversity, food security, and the well-being of our planet. NOW YOU KNOW!
Carved by Ancient Rivers: Canyon Walls Record Millions of Years of Rock Layers
A canyon is a deep, narrow valley with steep sides, most often cut by a river over millions of years. As the land is uplifted or the base level drops, the river keeps cutting down, exposing layered rock in the walls; geologists read these layers as a record of past environments. The Grand Canyon, carved by the Colorado River, exposes rocks spanning nearly 2 billion years. Canyons are also shaped by weathering, flash floods and, in some places, glaciers. Many are protected as parks. The footage shows canyons from the air and the rim, with the presenter.
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DID YOU KNOW? canyons are the stunning results of millions of years of erosion. They are among Earth's most awe-inspiring natural formations. These deep, narrow valleys carved by rivers reveal the layers of time through their stratified walls, offering a glimpse into the planet's geological past. They are also vital for scientific research, offering insights into Earth's history and climatic changes. However, these majestic landscapes are vulnerable to environmental threats, including climate change and human activities. Protecting canyons is essential to preserve their natural beauty, ecological value, and geological significance for future generations. NOW YOU KNOW!
It Better Be Boron!: Boron Makes Lab Glass Resist Sudden Temperature Changes
Boron is element 5, a metalloid. It's an essential micronutrient for plants, needed for cell walls and growth. Adding boron oxide to glass makes borosilicate glass, which has low thermal expansion and resists thermal shock, so it's used for lab glassware and some cookware. Small amounts of boron improve the hardenability of steel, and boron carbide is one of the hardest known materials. Boron is used as a dopant in silicon semiconductors and in fiberglass, and borates such as borax are used in detergents and bleaches. The footage shows lab experiments, glassmaking and fields, with the presenter.
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Boron. A versatile and essential element plays a crucial role in a myriad of industries and applications. DID YOU KNOW? In agriculture, it's a vital nutrient for plants, crucial for their growth and development. In the tech world, boron is a key ingredient in borosilicate glass, known for its exceptional resistance to thermal shock, making it ideal for laboratory glassware and cookware. The element also enhances the strength and hardness of steel and other metals, underscoring its importance in manufacturing and construction. Additionally, boron compounds are pivotal in producing semiconductors and fiberglass, and even play a role in detergents and bleaches, showcasing the element's broad impact on our daily lives and advanced technologies. NOW YOU KNOW!
Yeah I Dig: Minecraft Is the Best-Selling Video Game of All Time
Minecraft is a sandbox video game created by Markus 'Notch' Persson and developed by Mojang Studios, released in full in 2011. Its procedurally generated worlds are built from blocks that players can mine and place, letting them explore, survive and build almost anything. Microsoft bought Mojang in 2014 for $2.5 billion. Minecraft is the best-selling video game of all time, with more than 300 million copies sold by 2023. Players have built huge creations and use it in education. The footage shows Minecraft builds and gameplay, with the presenter.
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Minecraft, a game that needs no introduction, revolutionized the gaming world with its simple yet profound premise. A sandbox where imagination is the only limit. Developed by Mojang Studios, this game allows players to explore, build, and survive in a pixelated, procedurally generated world where every block can be mined and placed to create almost anything one can imagine. From towering castles to intricate cities, players have crafted entire worlds, sharing them with a community that spans across ages and continents. NOW YOU KNOW!
The Land of Israel: Israel Declared Independence on May 14, 1948
Israel declared independence on May 14, 1948, as the British Mandate for Palestine ended. Neighboring Arab states invaded the next day, starting the 1948 Arab-Israeli War; the war also displaced hundreds of thousands of Palestinian Arabs. Israel has since fought further wars with neighboring states, including in 1967 and 1973. Jerusalem is holy to Judaism, Christianity and Islam. Israel designates Jerusalem as its capital, while Palestinians seek East Jerusalem as the capital of a future state, and the city's status is disputed internationally. The footage shows Jerusalem and other locations, with the presenter.
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Israel, a nation situated in the Middle East, was formally established on May 14th, 1948, following the conclusion of the British Mandate for Palestine. DID YOU KNOW? The Declaration of the State of Israel triggered conflicts with neighboring Arab states, marking the beginning of a complex geopolitical landscape. Jerusalem, Israel's capital, holds immense religious significance for Judaism, Christianity, and Islam. The city, however, is a point of contention, with disputes over its status and claims by both Israelis and Palestinians. The region has been marred by ongoing security challenges, as well as historical wars with neighboring Arab nations. NOW YOU KNOW!
Russia & The Ukraine: Russia Annexed Crimea From The Ukraine in March 2014
The Russo-Ukrainian War began in February 2014, when Russia occupied and then annexed Crimea from The Ukraine, and Russian-backed separatists took up arms in the Donbas region of eastern The Ukraine. On February 24, 2022, Russian President Vladimir Putin announced what he called a 'special military operation', and Russia launched a full-scale invasion of The Ukraine, the largest attack on a European country since the Second World War. By June 2022, the Ukrainian government said Russia held about 20% of The Ukraine's territory. The war has killed or wounded large numbers of soldiers and civilians, and millions of people from The Ukraine have been displaced inside the country or have fled abroad. The footage shows news coverage from 2014 to 2022, with the presenter.
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The Russo-Ukrainian War began in February 2014 as a conflict between Russia and Ukraine. DID YOU KNOW? It originated when Russia annexed Crimea from Ukraine and supported pro-Russian separatists in the Donbas region. Over the years, the conflict sought naval incidents, cyber warfare, and political tensions. In February of 2022, Russian President Vladimir Putin announced a special military operation to support breakaway republics in Donetsk and Luhansk. Russia launched a full-scale invasion of Ukraine. This invasion became the largest attack on a European country since World War II, resulting in significant casualties and displacements. By June 2022, Russian forces occupied about 20% of Ukrainian territory, and millions of Ukrainians were displaced or had fled the country. NOW YOU KNOW!
Iran: Iran Was Known Internationally as Persia Until 1935
Iran, officially the Islamic Republic of Iran, is a country in West Asia. Its territory was the heart of several Persian empires, beginning with the Achaemenid Empire founded by Cyrus the Great in the 6th century BC. The country was widely known abroad as Persia until 1935, when the government asked foreign governments to use the name Iran. Since the 1979 revolution it has been an Islamic republic. Persian (Farsi) is the official language, and Azerbaijani, Kurdish, Luri, Arabic, Baluchi and other languages are also spoken. Iran has had tense relations with several countries in recent decades, including over its nuclear program. The footage shows Iranian cities, mosques and landscapes, with the presenter.
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Iran, officially known as the Islamic Republic of Iran, is a country located in West Asia with a rich and extensive history. DID YOU KNOW? It's often referred to as Persia, a name closely associated with its historical past. Iran's history is marked by ancient civilizations, including the Persian Empire, which played a significant role in shaping the region's culture and influence. The official language of Iran is Persian, also known as Farsi, spoken by the majority of the population. However, due to its ethnic diversity, various other languages and dialects are spoken across the country. Iran has faced its share of challenges, including political tensions and international relations. Still, it remains a fascinating and culturally rich nation, with a unique blend of tradition and modernity. NOW YOU KNOW!
The Order of Pterosauria: Pterosaurs Flew, but They Weren't Dinosaurs
Pterosaurs (order Pterosauria) were flying reptiles, close relatives of dinosaurs but not dinosaurs themselves. They were the first vertebrates known to have evolved powered flight, on wings of skin stretched along a hugely long fourth finger. Pteranodon lived in North America about 86 to 84.5 million years ago, in the Late Cretaceous. Adult males had wingspans of about 5.6 to 6 m or more, with some estimates near 7 m, and a long, backward-pointing crest. It flew over the sea and ate fish. The footage shows pterosaur reconstructions, with the presenter.
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Pterodactyls, often incorrectly referred to as dinosaurs, were actually flying reptiles from the order Pterosauria. DID YOU KNOW? One of the most iconic members of this group was Pteranodon, which lived during the late Cretaceous period, roughly 88 to 75 million years ago. Pteranodon had a remarkable wingspan, with some individuals reaching up to 23 feet, or 7 meters. These ancient fliers had a distinctive crest at the back of their heads, and they were well adapted for a life of blighting and soaring over the seas. Despite their impressive size, Pteranodons were not dinosaurs, they belonged to a separate branch of the reptile family tree. NOW YOU KNOW!
The Cretaceous King: T. Rex Had One of the Strongest Bites of Any Land Animal
Tyrannosaurus rex was a large meat-eating dinosaur that lived in western North America about 68 to 66 million years ago. The largest specimens reached about 12 m long and weighed an estimated 8 tonnes or more, with hips about 4 m off the ground. Its arms were short but strong, while its legs and tail were powerful. Studies estimate it had one of the strongest bites of any land animal, able to crush bone, and a keen sense of smell. How it balanced hunting with scavenging is still debated. The footage shows Tyrannosaurus reconstructions, with the presenter.
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The Tyrannosaurus Rex colloquially known as T. Rex was a colossal Dinosaur that roamed the earth during the late Cretaceous period approximately 68 to 66 million years DID YOU KNOW? for its towering stature, the T. Rex could reach lengths of up to 40 feet and stood about 20 feet tall. Despite its famously diminutive front limbs its robust hind limbs and powerful tail suggest it was an adept predator. The T. Rex's fearsome reputation is owed to its massive equipped with formidable serrated teeth capable of delivering bone crushing bites. This apex predator likely used its keen sense of and impressive speed to hunt down prey making it a force in the prehistoric food chain. NOW YOU KNOW!
Three-Horned-Face!: Triceratops Means 'Three-Horned Face'
Triceratops was a large plant-eating ceratopsian dinosaur that lived in western North America about 68 to 66 million years ago, at the very end of the Cretaceous, making it one of the last non-avian dinosaurs. Its name means 'three-horned face'. It had a long horn above each eye, a shorter horn on the nose, and a solid bony frill. Healed injuries on fossils suggest the horns were used in fights with rivals, and possibly in defense; the frill may have served for display. It cropped plants with a parrot-like beak. Adults grew to about 8 to 9 m long. The footage shows Triceratops reconstructions, with the presenter.
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Triceratops a herbivorous dinosaur that roamed the during the late Cretaceous period approximately 68 to 66 million years ago is renowned for its distinctive appearance. DID YOU KNOW? The name triceratops translates to three-horned highlighting its most recognizable feature a large bony frill adorned with three horns. The two longer horns above the eyes and the shorter one on the nose were likely used for defense against predators and possibly in mating displays. This dinosaur had a robust four-legged build and was one of the last and largest of the horned dinosaurs. As an herbivore triceratops used its beak to graze on vegetation. NOW YOU KNOW!
Visit This Tropical Paradise: Bora Bora's Peak Is the Remnant of an Extinct Volcano
Bora Bora is an island in the Leeward Islands of French Polynesia, an overseas collectivity of France in the South Pacific. A central island of volcanic origin, topped by Mount Otemanu (727 m), the eroded remnant of an extinct volcano, sits inside a lagoon ringed by a barrier reef and motu (small islets). The island is known for luxury resorts with overwater bungalows, and for snorkeling and diving among coral, reef fish, rays and sharks. The footage shows the lagoon, bungalows and reef life, with the presenter.
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Bora Bora is a tropical paradise that epitomizes the allure of overwater bungalows, crystal clear turquoise waters, and lush green landscapes. DID YOU KNOW? This French-Polynesian gem is renowned for its stunning coral reefs, vibrant marine life, and the iconic Mount Otemanu a dormant volcano that adds to the island's dramatic scenery. Visitors to Bora Bora can indulge in luxury accommodations perched above the lagoon offering direct access to the vibrant underwater world. Snorkeling and diving enthusiasts can explore the coral gardens encountering colorful fish and rays in their natural NOW YOU KNOW!
Soft Coral Capital of the World!: Fiji Is Nicknamed the Soft Coral Capital of the World
Fiji is an island country in Melanesia in the South Pacific, made up of more than 330 islands, about 110 of them permanently inhabited. Its largest island is Viti Levu, home to the capital, Suva, and to the Coral Coast, a stretch of the south shore lined with fringing reefs and resorts. Fiji's reefs are famous for soft corals, earning it the nickname 'soft coral capital of the world', with sites such as the Rainbow Reef. The interior of Viti Levu has rainforest, waterfalls and traditional villages. The footage shows Fiji's beaches, reefs, waterfalls and villages, with the presenter.
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Fiji is an archipelago known for its breathtaking landscapes, vibrant coral reefs, and warm hospitality. DID YOU KNOW? consisting of over 300 islands, Fiji offers a diverse range of experiences from serene beach retreats to adventurous water activities. One of the highlights is the Coral Coast, a stretch of coastline adorned with coral reefs and dotted with luxurious resorts. Adventure seekers can explore the lush interior of Fiji's main island, with its waterfalls, hiking trails, and traditional villages. The friendly locals, known as Fijians, contribute to the warmth and welcoming atmosphere that defines the essence of this South Pacific paradise. NOW YOU KNOW!
The Red City: Marrakech Is Called the Red City for Its Red-Ochre Walls
Marrakech is a city in western Morocco, founded around 1070 by the Almoravids. It's nicknamed the Red City for the red-ochre color of its walls and buildings. Its medina, the walled old city, has been a UNESCO World Heritage Site since 1985 and is known for its souks selling spices, textiles and crafts. Jemaa el-Fnaa, the main square, fills each evening with food stalls, musicians and storytellers, and UNESCO lists its cultural space as intangible heritage. The footage shows the Koutoubia minaret, souks and the square, with the presenter.
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Marrakech known as the Red City for its distinctive terracotta colored buildings is a mesmerizing blend of history, culture, and vibrant energy. DID YOU KNOW? At its heart lies the UNESCO-listed Medina a bustling maze of narrow alleyways filled with markets offering a kaleidoscope of spices, textiles, and handmade crafts. The main square transforms into a lively spectacle in the evenings with storytellers, musicians, and food creating an unforgettable atmosphere. NOW YOU KNOW!
Catalan Gothic: The Sagrada Família Has Been Under Construction Since 1882
Barcelona is the capital of Catalonia, Spain. Its best-known building, the Basílica de la Sagrada Família, designed by Antoni Gaudí, has been under construction since 1882. Gaudí worked on it until his death in 1926. The Gothic Quarter (Barri Gòtic) preserves narrow medieval streets around Barcelona Cathedral, a Catalan Gothic church built mainly from the 13th to 15th centuries, with its facade finished in the late 19th century. La Rambla is a tree-lined boulevard running from the city center to the old port. The footage shows Barcelona's streets and churches, with the presenter.
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Barcelona, the capital of Catalonia, is a city celebrated for its unique architecture, rich history, and vibrant cultural scene. DID YOU KNOW? One of its most iconic landmarks is the Sagrada Familia, a masterpiece designed by architect Antony Gaudí. This basilica, still under construction, demonstrates Gaudí's distinctive style with intricate details and imaginative design. The Gothic Quarter, with its narrow medieval streets and charming squares, invites exploration. Here you'll find the Barcelona Cathedral, a stunning example of Catalan Gothic architecture. La Rambla, a bustling boulevard, is perfect for leisurely strolls and offers an array of shops, cafes, and street performances. NOW YOU KNOW!
Thera: Santorini's Crescent Shape Comes From a Volcanic Eruption
Santorini, officially Thira (ancient Thera), is a Greek island group in the southern Aegean Sea. Its crescent shape is the rim of a flooded caldera left mainly by the Minoan eruption, about 3,600 years ago, one of the largest volcanic eruptions in human history; it buried the Bronze Age town of Akrotiri. The towns of Fira and Oia sit on the caldera cliffs, known for whitewashed houses and blue-domed churches. The island's volcanic soil supports vineyards growing native grapes such as Assyrtiko. The footage shows Santorini's cliffs, villages and sunsets, with the presenter.
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Santorini a captivating Greek island in the southern Aegean Sea is renowned for its stunning landscapes, romantic sunsets, and distinctive architecture. DID YOU KNOW? The island was shaped by a volcanic eruption resulting in its iconic crescent and dramatic adorned with whitewash buildings. The blue domed churches of Oia and Fira are postcard creating a picturesque contrast against the deep blue waters of the caldera. Apart from its visual allure Santorini offers a rich cultural experience. Tourists can explore ancient archaeological sites, sample local wines produced from indigenous grape varieties and savor delicious cuisine at seaside taverns. Santorini provides an enchanting escape for those seeking beauty, history, and a touch of romance. NOW YOU KNOW!
The City of 10,000 Shrines: Kyoto Was Japan's Imperial Capital for Over 1,000 Years
Kyoto was Japan's imperial capital from 794 until 1868, when the emperor moved to Tokyo. The city has around 1,600 Buddhist temples and hundreds of Shinto shrines, and 17 of its sites are part of a UNESCO World Heritage listing. Fushimi Inari Taisha is known for thousands of vermilion torii gates lining trails up Mount Inari. Kinkaku-ji, the Golden Pavilion, is a Zen temple whose upper floors are covered in gold leaf. Kyoto is also known for its wooden machiya townhouses, the Arashiyama bamboo grove, tea culture and geiko (geisha) districts such as Gion. The footage shows Kyoto's shrines, temples and streets, with the presenter.
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Kyoto is a city that seamlessly blends tradition and modernity. Steep in history, Kyoto was the imperial capital for over a millennium, and is home to a wealth of temples, shrines, and traditional wooden machiya houses. The city's well-preserved architecture and serene gardens offer a glimpse into Japan's rich cultural heritage. DID YOU KNOW? One of Kyoto's most iconic landmarks is the Fushimi Inari Shrine, famous for its vibrant Tori gates that form a mesmerizing pathway up the sacred Mount Inari. Visitors can explore the historic Kinkaku-ji, a Zen Buddhist temple covered in gold leaf, and the serene Arashiyama bamboo grove where towering bamboo creates an enchanting atmosphere. Kyoto is also celebrated for its traditional tea houses and geisha districts. The juxtaposition of ancient traditions and modern innovation, coupled with Kyoto's tranquil beauty, makes it a captivating destination for those seeking a profound cultural experience. NOW YOU KNOW!
Long-Living Like Larry: Lobsters Keep Growing and Reproducing as They Age
Lobsters show indeterminate growth: they keep growing throughout life by molting their exoskeleton. Older lobsters remain fertile and don't show obvious signs of aging in the usual ways, partly because they keep producing telomerase, an enzyme linked to cell repair. Lobsters aren't immortal, though. Each molt takes more energy as they get bigger, and many old lobsters die from exhaustion during molting or from shell disease. American lobsters are estimated to live for decades, possibly 100 years. The footage shows lobsters on the seabed and in aquariums, with the presenter.
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Lobsters have an astonishing feature linked to their age. Instead of becoming feeble and weak with age, and continue reproducing throughout their lives, this unique characteristic has led to lobsters symbolizing longevity and resilience in various cultures. Unlike many other living beings, lobsters exhibit a phenomenon called indeterminate growth. This means that, theoretically, they could keep growing larger throughout their lives. The tough exoskeleton that protects them doesn't limit their growth as it molts periodically, allowing the lobster to increase in size. NOW YOU KNOW!
Blue Bloods: Squid Have Three Hearts and Blue Blood
Squid, like octopuses and cuttlefish, have three hearts: two branchial hearts pump blood through the gills, and a systemic heart pumps it around the body. Their blood is blue when oxygenated because it uses hemocyanin, a copper-containing protein, to carry oxygen, instead of the iron-based hemoglobin in human red blood cells. Hemocyanin is dissolved in the blood rather than packed into cells. The footage shows squid swimming, with the presenter.
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Squid have three hearts and blue blood. Two of the hearts pump blood to the gills, while the third pumps it to the rest of the body. DID YOU KNOW? The blue color of their blood comes from a copper-based molecule called hemocyanin, which is used to transport oxygen. This is different from humans, whose blood is iron-based and red when oxygenated. NOW YOU KNOW!
Really, Killer! Whales: Orca Pods Have Their Own Dialects
The orca, or killer whale (Orcinus orca), is the largest member of the dolphin family. Many populations live in matrilineal groups in which offspring stay with their mothers, and older females, including post-reproductive grandmothers, lead the group and help it find food. Pods cooperate to hunt, sometimes using techniques passed on within the group. Orca pods have distinct vocal dialects, sets of calls shared within a group and different from other groups'. The footage shows orca pods hunting and swimming, with the presenter.
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Orcas, also known as killer whales, are highly intelligent and social marine mammals. DID YOU KNOW? They live in matrilineal societies led by the eldest female, who is often the matriarch of the group. These family pods, consisting of multiple generations, collaborate closely in hunting, communicating, and raising their young. Additionally, killer whales are known for their diverse and sophisticated vocalizations. Different orca pods have distinctive dialects, or unique sets of calls, contributing to their rich and complex communication system. This intricate social structure and communication among orcas showcases their remarkable intelligence and cooperative behaviors in the ocean. NOW YOU KNOW!
Seahorse Secrets: Male Seahorses Carry the Eggs and Give Birth
Seahorses (genus Hippocampus) are small marine fish. They are among the few animals in which the male becomes pregnant: during mating the female deposits her eggs into a brood pouch on the male's belly, where he fertilizes them and supplies oxygen and nutrients as they develop. After roughly two to four weeks, depending on the species, he releases the young through muscular contractions, sometimes hundreds or more at once. The footage shows seahorses and a male giving birth, with the presenter.
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Seahorses, with their whimsical appearance and lifestyle, hold a fascinating distinction in the world. DID YOU KNOW? Unlike most animals, it is the male seahorse that carries and gives birth to the offspring. During the courtship ritual, the female seahorse transfers her eggs to a specialized pouch on the male's abdomen. The male seahorse then fertilizes and incubates the eggs within this pouch until they hatch. When the moment arrives, he goes into labor, experiencing contractions to expel the tiny seahorses into the water. This distinctive reproductive role reversal demonstrates the fascinating adaptations that can evolve in the animal kingdom. NOW YOU KNOW!
Largest Crabs on Earth!: Japanese Spider Crabs Can Span Nearly 4 m Leg to Leg
Spider crabs are crabs of the superfamily Majoidea, named for their long, thin legs. The Japanese spider crab (Macrocheira kaempferi) has the largest leg span of any arthropod, up to about 3.7 m. Many spider crabs decorate their shells with sponges, algae and debris for camouflage. In southern Australia, giant spider crabs (Leptomithrax gaimardii) gather in huge aggregations of thousands each year to molt together, which researchers think protects them while their new shells harden. The footage shows spider crab aggregations and Japanese spider crabs, with the presenter.
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Spider Crabs members of the crustacean family are intriguing creatures known for their remarkable appearance in annual mass migrations Did you know they have a peculiar habit of forming large Aggregations during the mating season thousands of spider crabs gather together and migrate in a caravan across the ocean floor What adds to their allure is their distinctive appearance with long spindly legs resembling a spider providing them with excellent camouflage among underwater vegetation this behavior and unique morphology Demonstrates the fascinating adaptations that spider crabs have evolved to thrive in their marine environments. NOW YOU KNOW!
Serving Great White: Great Whites Can Launch Fully Out of the Water After Seals
The great white shark (Carcharodon carcharias) is a large predatory shark found in coastal waters worldwide. Off places such as South Africa's False Bay, great whites ambush Cape fur seals from below at speed, sometimes breaching clear of the water. Like many sharks, great whites can be put into tonic immobility, a trance-like state, often by turning them upside down; researchers use it to handle sharks more safely. Orcas have also been seen using the effect on sharks. The footage shows great whites breaching and swimming, with the presenter.
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Great White Sharks, majestic predators of the oceans, possess several intriguing features. DID YOU KNOW? One captivating fact is their incredible ability to breach the water surface while hunting seals. With powerful tails and a burst of speed, they launch themselves into the air, displaying a behavior known as breaching. This technique allows them to surprise their prey from below, demonstrating both their agility and predatory prowess. Great Whites also exhibit a phenomenon known as tonic immobility, where great white sharks can be induced into a trance-like state. This state is thought to calm the sharks, and is sometimes used by researchers for safer handling during scientific studies. Despite their fearsome reputation, these creatures exhibit a range of behaviors that contribute to their complex and intriguing nature. NOW YOU KNOW!
Future of Finance: Bitcoin Launched in 2009 as the First Decentralized Cryptocurrency
A cryptocurrency is a digital currency that uses cryptography to secure transactions and usually runs on a decentralized ledger called a blockchain rather than through a central bank. Bitcoin, launched in January 2009 by the pseudonymous Satoshi Nakamoto, was the first decentralized cryptocurrency. Thousands of others, often called altcoins, have followed. Supporters point to lower barriers to access and to privacy; critics and regulators point to price volatility, fraud, and use in illegal activity. Regulation varies widely by country. The footage shows coin graphics and charts, with the presenter.
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Cryptocurrency is a type of digital or virtual currency that uses cryptography for security and operates on a decentralized network based on blockchain technology. DID YOU KNOW? Bitcoin, created in 2009, was the first decentralized cryptocurrency, and since then, thousands of alternative cryptocurrencies, commonly referred to as altcoins, have been developed. Cryptocurrencies have gained popularity for various reasons, including the potential for financial privacy, lower transaction fees, and the promise of financial inclusion. However, they also face challenges such as regulatory scrutiny, volatility, and concerns about their use in illegal activities. NOW YOU KNOW!
Fair & Efficient Markets: The SEC Was Created in 1934 After the 1929 Crash
The US Securities and Exchange Commission (SEC) was created by the Securities Exchange Act of 1934, after the 1929 stock market crash and during the Great Depression. Its stated mission is to protect investors, maintain fair, orderly and efficient markets, and facilitate capital formation. It requires public companies to disclose financial and other information, oversees exchanges, brokers and investment advisers, and brings civil enforcement actions for violations such as fraud and insider trading. Joseph P. Kennedy was its first chairman. The footage shows the SEC building and market screens, with the presenter.
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The SEC or U.S. Securities & Exchange Commission was established in 1934 in response to the Great Depression. DID YOU KNOW? Its primary purpose is to protect investors, maintain fair and efficient markets, and facilitate capital formation. The SEC oversees and regulates the securities industry ensuring that companies provide accurate and transparent information to the public. This regulatory body plays a crucial role in fostering confidence in the financial markets. One of its central functions is enforcement where the SEC investigates potential violations of securities and takes legal action against wrongdoers ranging from cases of fraud to insider NOW YOU KNOW!
Money Isn't Real?: Most of Today's Money Isn't Backed by Gold
Fiat money is currency that isn't backed by a physical commodity such as gold or silver. Its value comes from government decree, its status as legal tender, and people's trust in the issuer. It lets central banks adjust the money supply and interest rates, but it can lose value through inflation if trust or discipline fails. Most major currencies, including the US dollar, euro and Japanese yen, are fiat currencies. The US ended the dollar's last link to gold in 1971, when President Nixon suspended its convertibility for foreign governments. The footage shows banknotes and money, with the presenter.
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Fiat Currency refers to a type of currency that is issued by a government and is not backed by a physical commodity like gold or silver. Instead its value is a derived from the trust and people have in the issuing government. DID YOU KNOW? Fiat currencies have no intrinsic and are not redeemable for a commodity but they are declared legal tender by the government. The advantage of fiat currency lies in its flexibility for governments to manage monetary policy, control money supply, and respond to economic conditions. However, it is also susceptible to inflation and can be affected by changes in public perception and government stability. The majority of the world's currencies including the US Dollar, Euro, and Japanese are fiat currencies. NOW YOU KNOW!
McLaren Automotive: McLaren Started as a Racing Team in 1963
McLaren began in 1963 when New Zealand driver Bruce McLaren founded Bruce McLaren Motor Racing, which entered Formula One in 1966. Bruce McLaren died in a testing crash in 1970, but the team became one of the most successful in F1. The McLaren F1 road car of the 1990s was for years the fastest production car. McLaren Automotive, the road-car company based in Woking, England, launched its first model, the MP4-12C, in 2011, and its cars are known for carbon-fiber chassis. The footage shows McLaren cars, with the presenter.
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McLaren, a British luxury sports car manufacturer, has a rich history in motorsports and is renowned for producing incredibly powerful supercars. DID YOU KNOW? Founded by Bruce McLaren in 1963, the company initially focused on Formula 1 racing before expanding into the production of road-legal vehicles. McLaren has consistently demonstrated its engineering prowess, integrating cutting-edge technologies and materials into its cars. The brand's dedication to innovation and performance has made McLaren a prominent name in the world of high-end sports cars, capturing the hearts of automotive enthusiasts globally. NOW YOU KNOW!
Pagani Automobili: Pagani Builds Only a Few Dozen Cars a Year
Pagani Automobili is an Italian maker of hypercars, founded in 1992 by the Argentine-born Horacio Pagani in San Cesario sul Panaro, near Modena. Pagani had worked at Lamborghini, where he helped develop the use of carbon fiber composites. The company's first car, the Zonda, appeared in 1999, followed by the Huayra in 2011 and the Utopia in 2022. Its cars use carbon-fiber and carbon-titanium composites and are built by hand in small numbers. The footage shows Pagani cars and details, with the presenter.
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Pagani, an Italian manufacturer of high-performance hypercars, stands as a testament to the vision and craftsmanship of its founder, Horatio Pagani. DID YOU KNOW? Established in 1992, Pagani has earned a reputation for creating automotive masterpieces that blend art and engineering. Each Pagani car is a limited production work of art, meticulously handcrafted with an obsessive attention to detail. Pagani cars are revered for their unparalleled performance and unique design elements. The use of advanced materials, such as carbon fiber, contributes to their lightweight construction, enhancing speed and agility. Pagani's philosophy of combining artistry with cutting-edge technology has elevated the brand to the upper echelons of the hypercar world. NOW YOU KNOW!
Spirit of Ecstasy: Rolls-Royce's Mascot Dates to 1911
Rolls-Royce Limited was founded in 1906 by Charles Rolls and Henry Royce in Britain. It built luxury cars and, from the First World War, aircraft engines. In 1971 the company went bankrupt and was nationalized; the car business was later separated, and since 2003 Rolls-Royce Motor Cars has been owned by BMW, while Rolls-Royce Holdings makes aircraft engines. The Spirit of Ecstasy hood mascot, sculpted by Charles Sykes, has appeared since 1911. Rolls-Royce describes the smooth ride of its cars as a 'magic carpet ride'. The footage shows Rolls-Royce cars and interiors, with the presenter.
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Rolls-Royce, a legendary British luxury automobile and aerospace manufacturer, has epitomized excellence, craftsmanship, and opulence for over a century. DID YOU KNOW? Founded in 1906 by Charles Rolls and Henry Royce, Rolls-Royce quickly gained reputation for producing some of the world's most luxurious cars. The brand's iconic spirit of ecstasy, mascot, and distinctive grille have become symbols of automotive elegance. Rolls-Royce cars are renowned for their handcrafted interiors, using only the finest materials, such as hand-stitched leather, real wood veneers, and metal accents. Under the hood, Rolls-Royce vehicles are powered by high-performance engines, delivering a smooth and powerful driving experience. The famous magic carpet ride refers to the exceptional comfort and smoothness of the suspension, providing passengers with an unparalleled sense of luxury. NOW YOU KNOW!
Hypercar Luxury: Bugatti Was Founded in 1909 in a Town That Was Then German
Bugatti was founded in 1909 by the Italian-born Ettore Bugatti in Molsheim, Alsace, then part of the German Empire and part of France since 1919. Its pre-war cars won many races, and the Type 41 Royale was one of the largest luxury cars ever built. After decades of closures and revivals, Volkswagen relaunched the brand in Molsheim, building the Veyron from 2005 and the Chiron from 2016. Since 2021 it has been part of Bugatti Rimac. A horseshoe-shaped grille is a long-running Bugatti signature. The footage shows Bugatti cars and details, with the presenter.
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Bugatti a name with automotive opulence and traces its roots back to the early 20th century. DID YOU KNOW? Founded in 1909 the French-Italian brand quickly gained reputation for producing some of the most luxurious and high-performance cars in the world. Each Bugatti is a masterpiece of engineering blending artistry with cutting edge technology from the distinctive horseshoe shaped grille to the meticulously crafted interiors. Beyond Bugatti vehicles are a symbol of exclusivity and sophistication catering to a select group of connoisseurs who appreciate the fusion of art and performance in every Bugatti. NOW YOU KNOW!
Lamborghini: Lamborghini Started as a Tractor Maker
Automobili Lamborghini was founded in 1963 by Ferruccio Lamborghini, who had made his fortune building tractors, to compete with established grand touring brands such as Ferrari. It is based in Sant'Agata Bolognese, Italy, and has been owned by the Volkswagen Group through Audi since 1998. The 1966 Miura set the pattern for mid-engined supercars, and the Countach introduced the scissor doors that later models such as the Aventador kept. The Huracán, built from 2014 to 2024, used a naturally aspirated V10. The footage shows Lamborghini cars, with the presenter.
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Lamborghini a story of passion, rebellion, and relentless pursuit of automotive excellence. Founded by Ferruccio Lamborghini in 1963 the Italian luxury sports car manufacturer emerged as a formidable competitor to established names like DID YOU KNOW? Lamborghini cars are renowned for their bold and aggressive designs often characterized by angular lines and distinctive scissor doors. The brand's iconic models such as the Lamborghini Miura and Aventador have left an indelible mark on the automotive Lamborghini's commitment to pushing the limits performance is evident in the powerful engines that roar under the hoods of their cars. The Lamborghini Huracan for with its naturally aspirated V10 engine delivers an exhilarating driving experience, combining speed, precision and unmistakable style. NOW YOU KNOW!
The Prancing Horse: Ferrari's Red Comes From Italy's Racing Color
Ferrari is an Italian sports car maker based in Maranello. Enzo Ferrari, who had run Alfa Romeo's racing team, founded Auto Avio Costruzioni in 1939; the first car bearing the Ferrari name, the 125 S, followed in 1947. Its prancing horse emblem was the symbol of the First World War pilot Francesco Baracca, and its red, rosso corsa, was Italy's traditional international racing color. Ferrari is the oldest and most successful team in Formula One. It builds cars in limited numbers, which helps their value. The footage shows Ferrari cars and badges, with the presenter.
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Ferrari the iconic Italian automaker stands as a symbol of automotive excellence blending luxury, performance, and distinctive DID YOU KNOW? Established in 1939 by Enzo Ferrari the company has consistently produced some of the world's most coveted sports Renowned for their sleek and aerodynamic profiles Ferrari vehicles are instantly recognizable often adorned with the signature red hue that has become synonymous with the brand. Beyond their striking aesthetics Ferrari cars boast cutting-edge technology and innovation. Meticulous craftsmanship and a dedication to delivering a superior driving experience are evident in every detail. Limited production runs contribute to their exclusivity elevating the brand's desirability among automotive enthusiasts and collectors. NOW YOU KNOW!
Based Bunnies: A Rabbit's Teeth Never Stop Growing
Rabbits are small mammals in the family Leporidae, together with hares. They have long ears, strong hind legs and short, fluffy tails. Rabbits are herbivores that eat mostly grasses and other plants, and their teeth grow continuously throughout life, so they need tough, fibrous food to keep them worn down. Females have a gestation of about a month and can have several litters a year; the young are called kits or kittens. Rabbits are crepuscular, most active at dawn and dusk. The footage shows rabbits feeding and resting, with the presenter.
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Rabbits are small mammals belonging to the family Leporae, known for their long ears, strong hind legs, and fluffy tails. DID YOU KNOW? Rabbits are herbivores, primarily feeding on grass and other plant materials. They have continuously growing teeth that require regular chewing to prevent overgrowth. Known for their prolific breeding, rabbits have a short gestation period, and their offspring, called kits or kittens, are born in litters. They are crepuscular, meaning they're most active during dawn and dusk. NOW YOU KNOW!
Shear Delight: Sheep Can Remember 50 Other Sheep's Faces for Two Years
Sheep (Ovis aries) are social flock animals. In a 2001 study, researchers at the Babraham Institute in Cambridge found that sheep could recognize the faces of about 50 other sheep and remember them for up to two years. A 2017 study showed sheep could also learn to recognize photos of familiar human faces. Sheep have a wide field of view and good hearing, including higher frequencies than people can hear. The footage shows sheep in fields and flocks, with the presenter.
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Sheep have excellent memories, and can recognize the faces of up to 50 other sheep for several years. DID YOU KNOW? Their social intelligence helps them form strong bonds within their flock, facilitating communication and cooperation in group activities. Additionally, sheep are known for their keen sense of hearing, with the ability to detect high-frequency sounds beyond the range of human hearing. NOW YOU KNOW!
Amazing Bear Ability: A Bear's Nose May Be Several Times Keener Than a Bloodhound's
Bears have one of the keenest senses of smell of any land mammal. Their large nasal cavities hold a huge surface of scent-detecting tissue. The US National Park Service says a bear's sense of smell is about seven times better than a bloodhound's, and bears are widely reported to smell food from miles away. They use smell to find food, track mates and cubs, and detect other bears and people. The footage shows bears sniffing and foraging, with the presenter.
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Bears are known for their incredible sense of smell, which is far superior to that of humans. DID YOU KNOW? A bear's sense of smell is estimated to be seven times stronger than a bloodhound's, making it one of the most developed among mammals. This exceptional olfactory ability helps bears locate food sources, detect predators, and navigate their surroundings. They can sniff out scents from miles away, showcasing the crucial role smell plays in their daily lives. NOW YOU KNOW!
Your Favorite Beetle: One Ladybug Can Eat Thousands of Aphids in Its Life
Ladybugs, or ladybirds, are small beetles of the family Coccinellidae, with about 6,000 species. Many are brightly colored and spotted, which warns predators that they taste bad. Most species are predators of soft-bodied pests such as aphids, scale insects and mites, and some have been released for biological pest control. A few species eat plants or fungi instead. Ladybugs appear in folklore in many cultures as a sign of good luck. The footage shows ladybugs on plants, with the presenter.
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Ladybugs or Ladybirds are small beetles widely recognized for their spotted appearance and vibrant colors. DID YOU KNOW? Ladybugs have a natural role as pest controllers. These beetles are voracious predators primarily feeding on harmful garden pests like aphids, mites, and scale insects. Ladybugs consume vast quantities of pest insects making them beneficial for agriculture and gardening. Apart from their ecological importance ladybugs hold cultural significance in various societies. In many cultures these charming beetles are considered symbols of good luck and fortune. NOW YOU KNOW!
Nectar Collectors: Butterflies Taste With Their Feet
Butterflies have taste receptors on their palps and feet, and the tips of their antennae carry receptors that detect odors. By landing on a leaf and touching it with their feet, females can check whether a plant is a suitable host for their caterpillars before laying eggs. The same senses help adults find nectar, which they drink through a long coiled proboscis. The footage shows butterflies feeding on flowers, with the presenter.
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Butterflies use chemoreceptors, or taste receptors, located not only on their feet, but also on other parts of their body. DID YOU KNOW? These receptors allow them to detect and identify chemical compounds present on surfaces, helping them assess the suitability of various substrates for laying eggs or extracting nectar. This intricate sensory system contributes to their ability to navigate their environment and fulfill essential life functions. NOW YOU KNOW!
Busy Busy Bees: Honey Bees Give Directions by Dancing
Honey bees use the waggle dance to tell nestmates where to find food, water or new nest sites. A returning forager runs a figure-eight on the comb; the angle of the straight 'waggle run' relative to vertical shows the direction of the food relative to the Sun, and the duration of the waggle shows the distance. Karl von Frisch decoded the dance and shared the 1973 Nobel Prize in Physiology or Medicine for his work on bee behavior. The footage shows bees on flowers and in the hive, with the presenter.
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Bees communicate through intricate dances known as the waggle dance. DID YOU KNOW? When a forager bee returns to the hive after finding a source of food it performs this dance to convey the location and distance of the resource to other bees. The angle and duration of the dance provide precise information allowing fellow bees to navigate to the food source with remarkable accuracy. This sophisticated form of communication helps the hive efficiently exploit floral resources. NOW YOU KNOW!
Sakura: Japan Forecasts Cherry Blossoms Like the Weather
Cherry blossoms, sakura in Japanese, are the flowers of several Prunus species. In Japan they bloom briefly in spring, and their timing depends mainly on temperature, so warm springs bring earlier blooms. The Japan Meteorological Agency and private forecasters track a 'cherry blossom front' moving north. Hanami, the custom of viewing the blossoms, dates back over a thousand years, and records of bloom dates in Kyoto go back to the 9th century. The footage shows blossoming trees, with the presenter.
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Cherry Blossom trees celebrated for their breathtaking springtime displays have deep cultural significance and a fascinating life cycle. DID YOU KNOW? These iconic trees known as Sakura in Japan typically bloom in early spring creating stunning landscapes filled with delicate pink and white flowers. Interestingly, the timing of cherry blossom blooming is influenced by various factors including temperature and weather conditions. Warmer temperatures can lead to earlier blooming while cooler temperatures may delay it. The unpredictability of the blooming period adds an element of excitement to the traditional custom of flower viewing. Each year, people eagerly anticipate the arrival of cherry blossoms marking the beginning of spring and inspiring festivals and celebrations around the world. NOW YOU KNOW!
Sun Seekers: Young Sunflowers Follow the Sun, Then Stop
Young sunflower plants (Helianthus annuus) show heliotropism: before the flower heads open, the buds turn to follow the Sun from east to west during the day and swing back to face east overnight. The motion is driven by an internal clock and uneven stem growth. Once the heads mature and bloom, they stop tracking and mostly stay facing east, which warms them in the morning and draws more pollinators. A uniform field of east-facing heads can give the false impression that open flowers track the Sun. The footage shows sunflower fields, with the presenter.
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Sunflowers are not only known for their vibrant appearance but also for their unique behavior known as heliotropism. DID YOU KNOW? Young sunflower blooms exhibit heliotropism by following the movement of the sun across the sky. This means that during the day the face of the sunflower tracks the sun from east to west maximizing its exposure to sunlight. As the sun sets the sunflower resets and prepares to face east again in the morning. This behavior is more noticeable in younger sunflowers and tends to decrease as they mature. NOW YOU KNOW!
Feeling Rosy: Roses Have Been Cultivated for Thousands of Years
Roses belong to the genus Rosa in the family Rosaceae, with over 300 species and tens of thousands of cultivars. Most species are native to Asia, with smaller numbers from Europe, North America and northwest Africa. Roses have been grown since ancient times for their beauty and scent; rose oil from petals is used in perfume, and rose hips and rose water are used in food. The footage shows rose gardens and blooms, with the presenter.
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Roses belonging to the genus Rosa are an iconic flowering plant known for their exquisite beauty and fragrant DID YOU KNOW? With a rich cultural and symbolic history roses have been cultivated for centuries and today there are thousands of varieties The cultivation of roses dates back to ancient times with different species originating from various regions around Roses are not only prized for their ornamental value but are also used in the production of essential oils, perfumes, and even culinary From classic garden roses to these flowers continue to captivate people globally symbolizing love, beauty, and diverse expressions of NOW YOU KNOW!
Exceptionally Emerald!: Emeralds Are Allowed Their Flaws
Emerald is the green variety of the mineral beryl, colored by traces of chromium and sometimes vanadium. Its name comes, via Old French and Latin, from the Greek smaragdos, 'green gem'. Colombia is the world's largest producer, and its Muzo mine is famous for fine emeralds. Most emeralds have inclusions, nicknamed 'jardin' (French for garden) for their mossy look, and these are widely accepted. The footage shows rough and cut emeralds, with the presenter.
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Emeralds are precious gemstones known for their vibrant green color which is caused by traces of chromium and vanadium in the mineral beryl. DID YOU KNOW? The name emerald is derived from the Greek word smaragdos meaning green Columbia is historically renowned for producing some of the finest emeralds globally and the country's Muzo mine is particularly for its high-quality emerald specimens. The green color of emeralds is highly valued and their hue can range from light green to a intense green. Inclusions often referred to as jardin the French word for garden are acceptable in emeralds and can add character to the gemstone. NOW YOU KNOW!
Opulent Opal: Opal's Colors Come From Tiny Stacked Spheres of Silica
Opal is hydrated amorphous silica. Precious opal shows play-of-color, flashes of spectral color that shift with the viewing angle, while common opal doesn't. The effect comes from diffraction: precious opal is built from tiny silica spheres packed in a regular lattice, and their size and spacing set which colors appear. Australia produces most of the world's precious opal. Folklore around opals ranges from good luck to bad luck. The footage shows polished and rough opals, with the presenter.
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Opal is a mesmerizing gemstone renowned for its play of color a phenomenon where it displays vibrant flashes of iridescence that change with the viewing angle. DID YOU KNOW? This captivating optical effect is created by the diffraction of light as it interacts with silica spheres within the stone. Opals come in a spectrum of colors and their beauty lies in the unique patterns and combinations of hues they exhibit. The play of color can include shades of orange, green, blue, and violet, making opals one of the most colorful Beyond their aesthetic appeal opals have been surrounded by myths and Some cultures believed opals brought good luck while others considered them symbols of hope. Regardless of superstitions opals remain highly prized in the world of for their unique and ever-changing beauty. NOW YOU KNOW!
Quartz Crystals: Squeeze a Quartz Crystal and It Makes Electricity
Quartz is silicon dioxide (SiO2) and one of the most common minerals in Earth's continental crust. It forms hexagonal crystals and comes in many varieties; clear, colorless quartz is called rock crystal. Quartz is piezoelectric: mechanical stress produces an electric charge, and an applied voltage makes it flex. Quartz clocks and watches use this, driving a small crystal resonator, usually tuned to 32,768 Hz, and counting its vibrations to keep time. The footage shows quartz crystals, a demonstration spark and a watch movement, with the presenter.
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Quartz is a common mineral found in the Earth's crust and comes in various forms and colors. DID YOU KNOW? One of the most well-known varieties is rock crystal quartz known for its clear and transparent appearance. Quartz crystals have a hexagonal structure and are composed of silicon and oxygen atoms. One fascinating property of quartz is its piezoelectricity. When subjected to mechanical stress or pressure quartz crystals generate a small electric charge. This property is utilized in various technologies including quartz watches where the vibrations of a quartz crystal help maintain accurate timekeeping. NOW YOU KNOW!
Ruby Red: A Trace of Chromium Makes Corundum a Ruby
Ruby is the red gem variety of corundum, crystalline aluminum oxide. Its color comes from small amounts of chromium; corundum in other colors is called sapphire. Color is the most important factor in a ruby's value, with a deep, vivid red (often called 'pigeon's blood') prized most. Rubies rate 9 on the Mohs hardness scale, behind only diamond among common gems. Rubies have long carried cultural meanings of passion and protection in many traditions. The footage shows cut and rough rubies, with the presenter.
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Rubies part of the corundum family are distinguished by their rich red color ranging from pinkish to blood red. DID YOU KNOW? The intensity of the red hue is a crucial factor in determining the quality and value of in various cultures, rubies have been associated with passion, protection, and prosperity. They are believed to possess mystical properties symbolizing love and vitality. Rubies are not only sought after in jewelry but also hold cultural significance making them prize gemstones in the world of gemology NOW YOU KNOW!
Azure Asterism: Needle Inclusions Give Star Sapphires Their Star
Sapphire is gem corundum, aluminum oxide, in any color except red, which is called ruby. Blue sapphire gets its color from iron and titanium, and sapphires also come in pink, yellow, green and colorless forms. Some sapphires show asterism, a six-rayed star caused by light reflecting off needle-like rutile inclusions. The Star of India is a 563-carat grayish-blue star sapphire held by the American Museum of Natural History in New York, and it is unusual for being nearly free of flaws. The footage shows blue and fancy sapphires and the Star of India, with the presenter.
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Sapphires like diamonds belong to the corundum mineral family and are primarily composed of aluminum oxide. DID YOU KNOW? What distinguishes sapphires is their vibrant range of colors with blue being the most well-known. However, sapphires can also be found in various hues such as pink, yellow, green, and even colorless. One of the most famous sapphires is the Star of India which is a massive nearly flawless blue sapphire. This gem exhibits a unique asterism a star-like pattern that emerges when light reflects off needle-like inclusions in the stone. NOW YOU KNOW!
Shine Bright: Diamonds Ride to the Surface in Volcanic Pipes
Diamond is carbon with its atoms arranged in a cubic crystal lattice. Most natural diamonds formed about 150 to 250 km deep in Earth's mantle, under high pressure and temperature, and many are more than a billion years old. They reach the surface in rare, deep-sourced volcanic eruptions whose remains are called kimberlite (and lamproite) pipes, where they are mined. Diamond is the hardest natural material, rating 10 on the Mohs scale. The footage shows rough and cut diamonds and mines, with the presenter.
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Diamonds are remarkable gemstones, found deep within the Earth's mantle, composed of carbon atoms, arranged in a crystal lattice structure, under high pressure and temperature. DID YOU KNOW? Diamonds are brought to the surface through volcanic pipes, known as kimberlite pipes. These volcanic eruptions deliver diamonds closer to the Earth's surface, where they can be mined. The allure of diamonds extends beyond their physical properties, often symbolizing enduring love and luxury. NOW YOU KNOW!
Turning Red: Red Pandas Have Their Own Family, Apart From Bears
The red panda (Ailurus fulgens) is a small mammal of the eastern Himalayas and southwestern China, including Nepal, Bhutan, India and Myanmar. It's the only living member of its own family, Ailuridae, and isn't closely related to the giant panda or other bears. It has reddish-brown fur, a ringed tail and, like the giant panda, an enlarged wrist bone that helps it grip bamboo. Red pandas are skilled climbers and spend much of their time in trees. They are listed as Endangered. One of their nicknames is 'firefox'. The footage shows red pandas climbing and eating, with the presenter.
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Red Pandas often referred to as the Firefox due to their striking red fur and fox-like appearance inhabit the temperate forests of the eastern Himalayas including parts of China, Nepal, Bhutan, and India. DID YOU KNOW? These charming creatures are distinct from giant pandas belonging to their own unique family. Despite their red pandas are not closely related to giant pandas or any other bear species. Known for their tree-dwelling lifestyle red pandas are excellent climbers and spend significant portion of their time in the canopy. Their reddish-brown fur provides camouflage in the dense foliage of their forested habitats. NOW YOU KNOW!
King Cobra: King Cobras Can Grow Past 5 m Long
The king cobra (Ophiophagus hannah) is the world's longest venomous snake, reaching about 5.5 m, with a record of about 5.85 m. It lives in forests from India through Southeast Asia to southern China and Indonesia. When threatened it raises the front of its body and spreads a hood formed by elongated ribs and loose skin. It feeds mainly on other snakes. In 2024, researchers proposed splitting it into four species. The footage shows king cobras raising their hoods, with the presenter.
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The King Cobra holds the title of the world's longest venomous snake. DID YOU KNOW? This impressive reptile is native to the forests of Southeast Asia including India, southern China, and the Indonesian archipelago. Reaching lengths of up to 18 feet or 5.5 meters the king cobra stands out not just for its size but also for its iconic appearance. It has distinctive hood markings and is capable of raising its body off the ground when threatened creating an intimidating spectacle. The hood is a result of expanded ribs and loose skin forming a flattened iconic NOW YOU KNOW!
Sea Cows: Dugongs Graze Seagrass Like Cows Graze Grass
The dugong (Dugong dugon) is a marine mammal related to manatees; together they form the order Sirenia, often called sea cows. Dugongs live in warm coastal waters from East Africa and the Red Sea across the Indian Ocean to Australia and the western Pacific. Adults are typically about 3 m long and often weigh 250 to 400 kg, though large individuals can be heavier. They feed almost entirely on seagrass, swim with a fluked tail, and usually dive for a few minutes at a time. The species is listed as Vulnerable. The footage shows dugongs grazing and swimming, with the presenter.
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Dugongs also known as sea cows are marine mammals closely related to manatees. DID YOU KNOW? These gentle herbivores are found coastal waters from East Africa to Australia including the Red Sea, Indian Ocean, and the Pacific. Dugongs are large animals with adults reaching lengths of up to and weighing around 600 kilograms. Their bodies are well adapted for aquatic featuring a streamlined shape and paddle like flippers. Dugongs are primarily herbivorous feeding on sea grasses in shallow coastal waters. Dugongs have the ability to stay submerged for several minutes using their strong tails to propel themselves. NOW YOU KNOW!
Golden Monkeys: Golden Snub-Nosed Monkeys Survive Snowy Mountain Forests
The golden snub-nosed monkey (Rhinopithecus roxellana) is an Old World monkey of the mountain forests of central and southwest China. It has golden-orange fur, a pale blue face and a short, upturned nose. It lives at about 1,500 to 3,400 m, where winters bring snow, and eats lichens, leaves, bark, buds and seeds. Groups are organized as small units, each with one male, several females and young, which join together in large bands. The species is listed as Endangered. The footage shows golden snub-nosed monkeys in snowy forests, with the presenter.
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Golden Monkeys also known as golden snub nosed monkeys are captivating primates native to the mountainous forests of central and southwest China. Recognized for their unique appearance. DID YOU KNOW? These monkeys have a distinctive golden-orange fur coat contrasting with a dark face and upturned nostrils. Living at high altitudes often above 3,000 meters they've adapted to the challenging conditions of their habitat. Golden monkeys have complex social structures they live in tight-knit groups led by a dominant and their daily activities involve grooming, playing, and foraging for a varied diet that includes lichens, leaves, and NOW YOU KNOW!
These Cats Are Climbing: Leopards Drag Their Kills up Trees, Away From Scavengers
The leopard (Panthera pardus) is a big cat with a pale yellow to golden coat marked by dark rosettes. It has the widest range of any wild cat, across much of sub-Saharan Africa and parts of Asia, from rainforest to desert edges and mountains. Leopards are strong climbers and often haul their kills into trees, sometimes prey heavier than themselves, to keep them away from lions and hyenas. They are mostly solitary and active at night. The footage shows leopards in trees and on the ground, with the presenter.
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Leopards, some of the most adaptable and elusive big cats, are renowned for their striking golden yellow coats covered in distinctive black rosettes and spots. They inhabit a diverse range of environments, from dense forests to open savannas, demonstrating their ability to thrive in various landscapes across Africa and Asia. Exceptional climbers and powerful predators, leopards are known for hoisting their kills into trees to protect them from scavengers. NOW YOU KNOW!
Panda Panda Panda: A Giant Panda's 'Thumb' Is Really a Wrist Bone
The giant panda (Ailuropoda melanoleuca) is a bear native to the mountains of central China. Bamboo makes up more than 99% of its diet. A panda grips bamboo with a 'pseudo-thumb', an enlarged wrist bone (the radial sesamoid). Females are fertile for only about two to three days a year, and breeding programs have used artificial insemination. The IUCN downgraded the species from Endangered to Vulnerable in 2016 as wild numbers rose. The footage shows giant pandas eating and climbing, with the presenter.
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Giant pandas, beloved icons of conservation efforts, are captivating creatures with distinctive black and white fur. DID YOU KNOW? Endemic to China, these herbivores are recognized for their unique diet consisting mainly of bamboo. While classified as bears, pandas have evolved to possess specialized adaptations, including a thumb formed by an extension of their wrist bone, which aids in gripping bamboo stocks. Giant pandas face the challenge of low reproductive rates, with females having a short window of fertility each year. Conservation initiatives such as artificial insemination and dedicated breeding programs aim to boost their numbers and genetic diversity. NOW YOU KNOW!
Burj Khalifa: The Burj Khalifa's Setbacks Help Break up the Wind
The Burj Khalifa in Dubai, United Arab Emirates, is the world's tallest building at 828 m (2,717 ft). It was designed by Adrian Smith while at Skidmore, Owings & Merrill (SOM), and it opened in January 2010. Its Y-shaped plan and spiraling setbacks are partly inspired by Islamic architecture and a regional desert flower, and they help 'confuse the wind' by stopping organized vortices from forming. The exterior is clad in reflective glass and aluminum and textured stainless steel panels. The footage shows the tower from the air and from below, with the presenter.
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The Burj Khalifa located in United Arab Emirates is the tallest building in the world. DID YOU KNOW? Standing at a staggering height of 828 meters or 2,717 the Burj Khalifa was completed in 2010. It is an extraordinary feat of engineering and architectural design. Designed by the renowned architect Adrian Smith of the architectural firm SOM the Burj Khalifa features a sleek modern design inspired by Islamic architecture. It has a stepped tier structure that narrows as it rises with setbacks that reduce wind forces on the building. The tower is clad in reflective glass and aluminum. NOW YOU KNOW!
Empire State: The Empire State Building Went up in About 410 Days
The Empire State Building is a 102-story Art Deco skyscraper in Midtown Manhattan, New York City. Designed by Shreve, Lamb & Harmon, with William F. Lamb as chief designer, it was built during the Great Depression and opened on May 1, 1931, about 410 days after construction began. Its roof is 381 m (1,250 ft) high, and its tip reaches 443 m (1,454 ft). It was the world's tallest building until the North Tower of the World Trade Center topped out in 1970. The footage shows the building and city views, with the presenter.
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The Empire State Building, an iconic skyscraper in the heart of New York City, was completed in 1931 during the Great Depression. DID YOU KNOW? Standing at 1,454 feet, or 443 meters, it held the title of the world's tallest building until 1970. The construction of the Empire State Building was a remarkable engineering achievement, taking only 410 days from the start of excavation to its official opening. Designed by architect William F. Lamb of the architectural firm Shreve, Lamb, and Harmon, the building's Art Deco style and setback design were groundbreaking. NOW YOU KNOW!
Eiffel: Leading Artists Once Petitioned Against the Eiffel Tower
The Eiffel Tower is a wrought-iron lattice tower on the Champ de Mars in Paris, built by Gustave Eiffel's company as the entrance arch to the 1889 World's Fair. During construction, a group of artists and intellectuals published a protest against it. It was the world's tallest structure until the Chrysler Building in New York was completed in 1930. It stood 324 m (1,063 ft) with its antennas; new antennas brought it to about 330 m in 2022. It has become a global symbol of Paris and France. The footage shows the tower and a portrait of Gustave Eiffel, with the presenter.
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The Eiffel Tower completed in 1889 as the entrance arch for the 1889 World's was initially criticized by some of France's leading artists and intellectuals for its design. However, over time it has become a symbol of Paris and is now globally recognized and appreciated for its architectural beauty and engineering. DID YOU KNOW? The lattice-like structure was not only a feat of engineering but also a nod to the principles of transparency and modernity. Standing at 324 meters or 1,063 the Eiffel Tower held the title of the tallest man-made structure in the world until the completion of the Chrysler Building in New York in 1930. NOW YOU KNOW!
Fire Works: Strontium Burns Red, Copper Blue-Green
Heating certain metals in a flame gives off light of characteristic colors, which is the basis of the flame test in chemistry. Firework makers use metal salts for color: strontium gives red, calcium orange, sodium yellow, barium green and copper blue. Lithium also gives a red flame. Blue is the hardest firework color to make, because copper compounds give a clean blue only in a narrow temperature range. The footage shows flames, fireworks and colored burns, with the presenter.
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The vibrant colors produced by flames during combustion are a result of specific elements present in the material being burned. DID YOU KNOW? Strontium compounds create a deep red flame, while copper produces a blue or green flame. Sodium contributes to a yellow flame, and lithium typically results in a bright red or pink flame. This colorful phenomenon is often harnessed in firework displays, where different metal salts are used to achieve a visually stunning array of hues. NOW YOU KNOW!
Cloud Envy: Lenticular Clouds Can Look Like Stacked Flying Saucers
Lenticular clouds are stationary, lens-shaped clouds. They form when stable, moist air flows over a mountain or other obstacle and sets up a series of atmospheric waves downwind. Where the air rises in a wave, it cools and its moisture condenses into cloud; where it sinks again, the cloud evaporates. Because the wave stays in place, the cloud seems to hover. Layers can stack into a 'pile of plates'. Glider pilots use the lift in these waves, while powered aircraft may avoid the turbulence. Their saucer shape has led to some UFO reports. The footage shows lenticular clouds over mountains, including Mount Fuji, with the presenter.
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The Lenticular forms when moist air flows along the surface of the earth and encounters an obstacle. DID YOU KNOW? The air is forced to ascend and as it does it cools leading to the formation of these lens shaped clouds stacked creating a surreal almost UFO-like appearance. They're not only beautiful but also serve as indicators of turbulence and can sometimes be mistaken for unidentified flying objects due to their distinctive shape. NOW YOU KNOW!
Iguazu: Iguazu Falls Is About 275 Separate Drops
Iguazu Falls are waterfalls on the Iguazu River, on the border between Argentina's Misiones Province and Brazil's Paraná state. The system is made up of about 275 individual falls along roughly 2.7 km (1.7 miles) of the river's edge. The largest, the Devil's Throat, is a U-shaped chasm. The falls sit within two national parks, Iguazú in Argentina and Iguaçu in Brazil, both UNESCO World Heritage Sites, surrounded by subtropical Atlantic Forest. The footage shows the falls from above and from viewpoints, with the presenter.
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Iguazu Falls, located on the border of Argentina and Brazil, is one of the most impressive waterfalls in the world. DID YOU KNOW? The falls system consists of 275 individual drops, along nearly two miles of the Iguazu River. The falls are surrounded by lush rainforests, creating a stunning and biodiverse ecosystem in the surrounding area. NOW YOU KNOW!
SAMs: A SAM Can Home in by Radar, Infrared or Both
A surface-to-air missile (SAM) is launched from the ground or a ship to destroy aircraft, helicopters, drones or other missiles. Guidance varies: some SAMs ride a radar beam or home on radar energy reflected from the target, some home on infrared (heat), and some combine methods. Systems range from shoulder-fired missiles such as the Stinger to long-range systems such as the Patriot and S-400. SAMs were first used in combat in the Second World War era and became widespread during the Cold War. The footage shows SAM launchers and launches, with the presenter.
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Surface-to-Air Missiles or SAMs are sophisticated weapons designed for air defense capable of targeting and intercepting including helicopters and airplanes. DID YOU KNOW? SAMs use advanced guidance systems to track and engage their targets. These systems can employ radar, infrared, or a combination of both to home in on SAMs play a crucial role in modern military defense providing a potent means to protect airspace from aerial threats. NOW YOU KNOW!
Railguns: A Railgun Fires Without Any Gunpowder
A railgun is an electromagnetic launcher. A very large electric current runs up one rail, through a conductive projectile or armature, and back down the other rail; the magnetic field this creates pushes the projectile along the rails at very high speed. Conventional guns use chemical propellant instead. The US Navy researched railguns for years and tested prototypes, but paused its program in 2021. Japan's defense agency reported test-firing a railgun from a ship in 2023. Problems include rail wear and the huge power the guns need. The footage shows railgun tests and launches, with the presenter.
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Railguns are electromagnetic projectile launchers that use magnetic fields to propel projectiles at extremely high velocities. DID YOU KNOW? Railguns have high potential for delivering projectiles over vast distances with incredible Unlike traditional firearms that use chemical reactions to propel bullets railguns use electromagnetic forces to accelerate a conductive projectile along a pair of metal rails. This interaction propels the projectile forward with tremendous NOW YOU KNOW!
Helo: A Pinnacle Landing Puts a Helicopter Down on a Mountaintop
Military helicopters fill many roles, including troop transport, reconnaissance, search and rescue, medical evacuation and close air support, because they can hover and land almost anywhere. The Boeing AH-64 Apache is a US attack helicopter that first flew in 1975 and entered service with the US Army in 1986; it is also flown by many other countries. A pinnacle landing is a standard helicopter technique for landing on a peak, ridge or other elevated spot where wind and limited space make the approach harder. It's taught to helicopter pilots generally, not only Apache crews. The footage shows Apaches and other military helicopters, with the presenter.
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Military Helicopters serve diverse roles from troop transport to combat support, this is due to their agility and versatility. DID YOU KNOW? These helicopters play critical roles in reconnaissance, search and rescue, and providing air support. One example of this is the Boeing AH-64 Apache. Which can perform the Pinnacle landing maneuver. This involves landing on elevated terrain such as the top of a mountain or a small confined area. NOW YOU KNOW!
Subs: A Submarine Dives by Flooding Its Ballast Tanks
A submarine controls its buoyancy with ballast tanks. Flooding the main ballast tanks with seawater makes the boat heavier than the water it displaces, so it submerges; blowing the water out with compressed air makes it lighter, so it surfaces. Smaller trim tanks and the boat's diving planes fine-tune its depth and balance underwater. Submarines are used by navies for patrol, reconnaissance and deterrence, and research submersibles explore the deep sea. The first submarine to sink an enemy warship was the Confederate H. L. Hunley, in 1864. The footage shows submarines surfacing and underway, with the presenter.
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Submarines are fascinating vessels capable of operating beneath the water's surface, providing stealth and strategic advantages. DID YOU KNOW? Submarines use ballast tanks to control their buoyancy. By adjusting the amount of water in these tanks, submarines can either submerge or surface. When the tanks are filled with water, the submarine becomes heavier and sinks. When the tanks are emptied, it becomes lighter and rises to the surface. Submarines have played pivotal roles in naval warfare and scientific exploration. Their ability to travel silently underwater makes them effective for surprise attacks and reconnaissance. NOW YOU KNOW!
Typhoon: The Eurofighter Typhoon Is Built to Be Unstable on Purpose
The Eurofighter Typhoon is a twin-engine multirole fighter built by a consortium of Airbus, BAE Systems and Leonardo. It first flew in 1994 and entered service in 2003. It uses a canard-delta layout, with small foreplanes (canards) ahead of a delta wing. The design is aerodynamically unstable, and a digital fly-by-wire system keeps it under control, which gives the aircraft high agility. It's flown by Germany, the UK, Italy, Spain and Austria, and also by Saudi Arabia, Oman, Kuwait and Qatar. The footage shows Typhoons in flight and on the ground, with the presenter.
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The Eurofighter Typhoon, a multi-role fighter jet used by several European countries, has a unique design feature called the Canard Delta configuration. DID YOU KNOW? This design, with both Delta wings and Canard fore planes, provides exceptional agility and maneuverability, making it highly effective in air-to-air combat situations. NOW YOU KNOW!
Destroyer: Arleigh Burke-Class Destroyers Carry the Aegis Radar System
The Arleigh Burke class is a class of guided-missile destroyers in the US Navy. The lead ship, USS Arleigh Burke (DDG-51), was commissioned in 1991, and more than 70 have been commissioned since, making it one of the longest-running destroyer production programs. The ships are built around the Aegis Combat System and its SPY-1 phased-array radar, and they're designed for air defense, anti-submarine warfare and land attack. The class is named after Admiral Arleigh Burke, a destroyer commander in the Second World War who later served as Chief of Naval Operations. The footage shows Arleigh Burke-class destroyers at sea, with the presenter.
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The Arleigh Burke-class destroyer, a prominent class of destroyers in the U.S. Navy, is known for its versatility. DID YOU KNOW? These ships are equipped with the Aegis Combat System, a highly advanced radar and missile guidance system. Named after Admiral Arleigh Burke, these destroyers serve various roles, from air defense to anti-submarine warfare. NOW YOU KNOW!
King Tiger: The Tiger II Weighed Nearly 70 Tonnes
The Tiger II, nicknamed 'King Tiger' by Allied soldiers, was a German heavy tank of the Second World War, used in combat from 1944 to 1945. It weighed about 68 to 70 tonnes and carried the 8.8 cm KwK 43 L/71 gun. Its sloped frontal armor, up to 180 mm thick on the turret, was hard for most Allied tank guns of the time to penetrate from the front. About 490 were built. Its weight strained the engine and drivetrain, which were prone to breakdowns, and it was difficult to transport and to cross many bridges. The footage shows archive and museum images of the Tiger II, with the presenter.
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The Tiger II, also known as the King Tiger, was a formidable German heavy tank during World War II. DID YOU KNOW? Weighing around 70 tons, it featured thick armor and the powerful 88mm KWK 43 L71 gun. Its frontal armor, known for its strength, was nearly impenetrable for many allied tanks of the time. However, its sheer weight made it challenging to transport and prone to mechanical issues. The delicate balance between firepower, protection, and mobility in tank design. NOW YOU KNOW!
Dolphins: Dolphins Sleep One Brain Hemisphere at a Time
Dolphins breathe voluntarily, so they can't fully lose consciousness for long. Instead they use unihemispheric slow-wave sleep, in which one half of the brain sleeps while the other stays awake. During it, the eye opposite the waking hemisphere often stays open, which lets the animal surface to breathe, watch for threats and keep in contact with its group. The behavior is also seen in some other marine mammals and in birds. The footage shows dolphins swimming, with the presenter.
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Dolphins have a unique way of sleeping. DID YOU KNOW? While they do experience periods of deep sleep, they can't afford to fully shut down their brains for an extended time, as they need to surface to breathe. To overcome this challenge, dolphins rest one hemisphere of their brain at a time. This uni-hemispheric slow-wave sleep allows them to remain partially conscious and aware of their surroundings while resting. It enables dolphins to maintain basic bodily functions and respond quickly to any potential threats. NOW YOU KNOW!
Humpback Whales: Humpback Songs Spread From One Population to the Next
The humpback whale (Megaptera novaeangliae) is a baleen whale known for its songs, which are sung by males. A song is built from repeated themes, usually lasting about 10 to 20 minutes, and males may repeat it for hours. All males in a population sing roughly the same song, which changes over time. A 2011 study found new songs spreading eastward across South Pacific populations over several years, an example researchers describe as cultural transmission. The footage shows humpback whales swimming and breaching, with the presenter.
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Humpback whales are known for their complex songs, which can last up to 20 minutes and be heard over long distances. DID YOU KNOW? These songs are not just random sounds, they evolve and spread across whale populations. As the songs change, they can be compared to a form of cultural transmission among these marine mammals. It's a unique behavior that showcases a level of communication and cultural exchange among humpback whales. NOW YOU KNOW!
Jellies: Jellyfish Have Been Around for Over 500 Million Years
Jellyfish are the free-swimming medusa stage of certain cnidarians. They move by contracting their bell-shaped bodies, which pushes water out and drives them forward; many species also gain efficiency from vortices formed as the bell relaxes. Jellyfish have no brain, heart or bones, and they're about 95% water. Fossils show jellyfish-like animals at least 500 million years ago, including Burgessomedusa from the Burgess Shale, about 505 million years old, described in 2023. The footage shows jellyfish drifting in blue water, with the presenter.
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Jellyfish are fascinating creatures known for their otherworldly appearance. DID YOU KNOW? Unlike many marine animals that swim by contracting muscles, jellyfish use a process called jet propulsion. They open and close their bell-shaped bodies, expelling water to propel themselves forward. Jellyfish have been around for a very long time. Fossil evidence suggests that jellyfish have been in existence for at least 500 million years, making them one of the oldest living organisms on Earth. Despite their ancient origins, jellyfish continue to thrive in various marine environments. NOW YOU KNOW!
Rhinos: A Rhino's Horn Is Made of the Same Stuff as Your Fingernails
There are five living rhinoceros species: white and black in Africa, and Indian (greater one-horned), Javan and Sumatran in Asia. The white rhino is one of the largest land mammals after elephants and has two subspecies, the southern white rhino and the northern white rhino, of which only two females are known to survive. Rhino skin is thick, about 1.5 to 5 cm. Their horns are made of keratin; African and Sumatran rhinos have two horns, while Indian and Javan rhinos have one. Poaching for horn and habitat loss are the main threats, and the Javan, Sumatran and black rhinos are listed as critically endangered. The footage shows rhinos in grassland and forest, with the presenter.
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Rhinoceroses are fascinating creatures with distinct features. DID YOU KNOW? There are five species of rhinos. White, Black, Indian, Javan, and Sumatran. The White Rhinoceros is the second largest land mammal after the elephant and has two subspecies. The Southern White Rhino and the critically endangered Northern White Rhino. Rhinos are known for their thick, armor-like skin, which can be up to 1.5 inches thick. They have two large horns made of keratin, the same substance found in human hair and nails. Sadly, rhinos face severe threats from poaching, habitat loss, and illegal wildlife trade. Conservation efforts are crucial to ensure the survival of these magnificent creatures. NOW YOU KNOW!
Scaly Anteaters: Pangolins Roll Into a Ball of Keratin Scales
Pangolins are mammals of the order Pholidota, covered in overlapping scales made of keratin. There are eight living species, four in Africa and four in Asia. They are mostly nocturnal and use strong claws to dig into ant and termite nests, catching insects with a long, sticky tongue; they have no teeth. When threatened, a pangolin curls into a tight ball protected by its scales. Pangolins are widely reported as among the most trafficked mammals in the world, hunted for their meat and scales, and all eight species were listed on CITES Appendix I in 2016, banning international commercial trade. The footage shows pangolins foraging and curling up, with the presenter.
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Pangolins, sometimes referred to as scaly anteaters, are distinctive mammals with protective keratin scales covering their bodies. DID YOU KNOW? found in parts of Africa and Asia, these nocturnal creatures are well adapted for a life of digging and feeding on ants and termites? Pangolins are known for their unique defense mechanism. When threatened, they roll into a tight, armored ball, providing a shield of scales against potential predators. Unfortunately, pangolins face serious threats due to illegal wildlife trafficking, driven by demand for their scales. Despite international efforts to protect them, pangolins remain one of the most trafficked animals globally. Conservation initiatives aim to raise awareness about the importance of preserving these intriguing creatures. NOW YOU KNOW!
Elephants: Elephants Can Talk Over Kilometers With Sound Too Low to Hear
Elephants are the largest living land animals, with three living species: the African bush elephant, the African forest elephant and the Asian elephant. Females and young live in close family herds led by an older matriarch, whose experience helps the group find water and avoid danger. A 2006 study found that one of three Asian elephants tested passed the mirror self-recognition test. Researchers have also documented elephants lingering at and touching the remains of dead elephants. Elephants communicate with calls, touch and body language, including infrasonic rumbles below the range of human hearing that can carry for kilometers. The footage shows elephants in the wild, with the presenter.
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Elephants have an incredible memory, and they are known for their strong social bonds. DID YOU KNOW? These intelligent creatures are capable of recognizing themselves in a mirror, displaying a form of self-awareness. Elephants also mourn their dead and show empathy towards other members of their group. The intricate communication within elephant herds involves a variety of vocalizations, body language, and even infrasound. Low-frequency sounds that can travel over long distances to convey messages to other elephants. NOW YOU KNOW!
Suricata Suricatta: Meerkats Post a Lookout While the Group Feeds
The meerkat (Suricata suricatta) is a small mongoose of southern Africa's arid regions. Meerkats live in groups called mobs, gangs or clans, typically of 20 to 30 members and up to about 50. While the group forages, one or more sentinels watch from a raised spot and give alarm calls that vary with the type and urgency of the threat. Group members also share babysitting and teach pups to handle prey. The footage shows meerkats standing guard and foraging, with the presenter.
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Meerkats small carnivores belonging to the mongoose family, inhabiting the arid regions of southern Africa. Recognizable for their slender bodies, pointed snouts, and distinctively marked fur. DID YOU KNOW? Meerkats are highly social animals that form close-knit groups called mobs or clans. These groups, often comprising around 20 individuals, work cooperatively to ensure survival in harsh environments. One unique behavior of meerkats is their sentinel duty, where a designated member keeps watch for predators while others forage for food. NOW YOU KNOW!
African Gazelles: An Impala Can Leap About 10 m in a Single Bound
The impala (Aepyceros melampus) is a medium-sized antelope of eastern and southern Africa. It has a reddish-brown coat, and only males carry the lyre-shaped horns. Females and young form herds, and males compete for territories in the breeding season. Impalas are famous leapers, jumping up to about 3 m high and 10 m long, and they snort to warn of predators. They both graze and browse. Though often called gazelles, impalas belong to their own tribe, Aepycerotini, not the gazelle genus. The footage shows impalas running and leaping, with the presenter.
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Impalas, native to various African regions, are characterized by their reddish brown coat, distinctive lyre-shaped horns in males, and a glossy black patch on their tails. DID YOU KNOW? They form herds with intricate social structures, primarily consisting of females and their offspring, while males join during the breeding season. Renowned for their remarkable leaping ability, Impalas can execute impressive jumps, covering up to 33 feet, and clearing obstacles over 9 feet in height. They communicate through vocalizations such as snorts, grunts, and alarm barks, to alert the herd to potential dangers. As herbivores, Impalas sustain themselves by grazing on grasses, showcasing adaptability and resilience in their natural habitats. NOW YOU KNOW!
River Roamers: Hippos Make Their Own Sunscreen
Hippopotamuses (Hippopotamus amphibius) secrete a red-to-orange fluid sometimes called 'blood sweat'. It's neither: it contains pigments, hipposudoric and norhipposudoric acid, that absorb UV light and may inhibit bacteria. Hippos spend the day in water but can't actually swim or float well; they walk or bounce along the bottom and can stay submerged for around five minutes. On land they can run in short bursts at about 30 km/h. They are among the most dangerous large animals in Africa. The footage shows hippos in rivers and on land, with the presenter.
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Hippos secrete a reddish oily substance often referred to as blood sweat, although it's neither blood nor sweat. DID YOU KNOW? This secretion acts as a moisturizer and sunblock, helping to keep the skin hydrated and protected from the harsh rays. Hippos are deceptively agile in water, despite their large size. They are known to be excellent swimmers and can hold their breath for several minutes. Despite their hefty appearance, hippos can move surprisingly fast, both in the water and on land, making them one of the most formidable and unpredictable animals in their habitats. NOW YOU KNOW!
Fast Cats: Cheetahs Are the Fastest Land Animals
The cheetah (Acinonyx jubatus) is the fastest land animal, reaching about 93-104 km/h (58-65 mph) in short sprints, and it accelerates quickly. It hunts in brief chases rather than long pursuits. Black 'tear marks' run from the inner corner of each eye down to the mouth; they're thought to reduce glare from the sun and help the cat focus on prey, working like a football player's eye black. The footage shows cheetahs running and close-ups of their faces, with the presenter.
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Cheetahs are the fastest land animals and can accelerate from 0 to 60mph in just a few seconds. DID YOU KNOW? Their acceleration and make them capable of reaching up to 70mph in short bursts to catch prey. Cheetahs have distinctive tear marks running from the inner corners of their eyes down to the sides of their mouths. These markings help reflect the sun's and improve focus, acting like built-in sunglasses for these swift predators. NOW YOU KNOW!
Graceful Giants: A Giraffe's Neck Has the Same Number of Bones as Yours
Giraffes (Giraffa) have seven cervical vertebrae, the same number as almost all mammals, including humans; each is greatly elongated. Their patchy coat patterns differ between individuals, so researchers can identify giraffes from photographs, and pattern traits are partly inherited from the mother. The footage shows giraffes in the wild, with the presenter.
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Giraffes have the same number of neck vertebrae as humans seven. DID YOU KNOW? Despite their long necks, each vertebra is significantly larger, allowing them to support their towering height. Giraffes also have a distinctive coat pattern that acts as their unique fingerprint. No two giraffes have the same spots, making their coat patterns individually identifiable. NOW YOU KNOW!
Kings of the Jungle: Lions Are the Only Truly Social Big Cats
Lions (Panthera leo) are the most social wild cats, living in prides of related females, their cubs and a coalition of one or more adult males. Females do most of the hunting, often cooperatively, while males defend the pride's territory. Lionesses in a pride often give birth around the same time and nurse cubs communally. Despite the nickname 'king of the jungle', lions mostly live in savanna and grassland, not jungle. The footage shows lions resting and hunting, with the presenter.
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Lions are the only cats that live in groups known as prides. DID YOU KNOW? These social structures are crucial for hunting cooperatively, defending territory, and caring for the young. In a pride females are often the primary hunters, working together to take down prey while males guard the territory. Lionesses synchronize their reproductive cycles which can result in communal nursing and shared responsibility for the cubs among the pride. NOW YOU KNOW!
Mercury: Mercury Swings by About 600 °C Between Day and Night
Mercury, the closest planet to the Sun, has almost no atmosphere (only a thin exosphere) to trap heat. Its daytime surface reaches about 430 °C (800 °F), hot enough to melt lead, while nights fall to about -180 °C (-290 °F). That is the largest day-night swing of any planet. Its slow rotation also stretches each day: a solar day lasts about 176 Earth days. Despite the heat, radar and the MESSENGER spacecraft found water ice in permanently shadowed craters near the poles. The footage shows images of Mercury and the Sun, with the presenter.
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Mercury the closest planet to the sun has extreme temperature variations due to its lack of a substantial atmosphere to retain heat. DID YOU KNOW? During its daytime temperatures can soar up to around 800 degrees Fahrenheit or 430 degrees Celsius, hot enough to melt lead. However, during its nighttime temperatures plummet to approximately 290 degrees Fahrenheit or negative 180 degrees Celsius, making it one of the most extreme temperature differences in our solar system. NOW YOU KNOW!
Venus: A Day on Venus Is Longer Than Its Year
Venus rotates in the opposite direction to most planets, a retrograde rotation, so the Sun would rise in the west. It is also the slowest-spinning major planet: one rotation relative to the stars (a sidereal day) takes about 243 Earth days, longer than its 225-day orbit around the Sun. Because of the combined motions, a solar day on Venus, sunrise to sunrise, lasts about 117 Earth days. The cause of the retrograde spin is unsettled; ideas include a giant impact and tidal effects of its thick atmosphere. The footage shows images of Venus, with the presenter.
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Venus experiences a phenomenon known as retrograde where it rotates on its axis in the opposite to most planets in our solar system. DID YOU KNOW? While earth rotates counterclockwise Venus rotates clockwise. Additionally Venus has an extremely slow rotation taking about 243 Earth days to complete one rotation which is longer than its orbital year around the This means that a day on Venus, one full rotation, is actually longer than a year on Venus. NOW YOU KNOW!
Earth: Earth Is About 43 km Wider Than It Is Tall
Earth is not a perfect sphere but an oblate spheroid: its rotation flattens it at the poles and makes it bulge at the equator. The equatorial diameter is about 43 km greater than the polar diameter. Because of the bulge, the point on Earth's surface farthest from its center is the summit of Chimborazo in Ecuador, not Everest. The footage shows Earth from space, with the presenter.
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Earth our home planet is not a perfect sphere. DID YOU KNOW? It's slightly flattened at the poles and bulging at the equator due to its rotation. This shape is known as an oblate spheroid, the equatorial diameter is larger the diameter measured from pole to pole. This phenomenon results from the Earth's rotation causing a slight outward force at the equator and making it not a perfect sphere. This subtle distortion in shape is a fascinating aspect of our planet's NOW YOU KNOW!
Mars: Mars Has a Volcano About 2.5 Times Taller Than Everest
Olympus Mons on Mars is a huge shield volcano, among the tallest known in the solar system. Its summit stands about 21.9 km (72,000 ft) above the Martian datum, roughly 2.5 times Mount Everest's height above sea level, and it's about 600 km wide. It formed through long-lived eruptions of fluid lava. Mars's low gravity and lack of plate tectonics let lava pile up over one hotspot. Some lava flows are geologically young, so it may not be entirely extinct. The footage shows renderings of Mars and Olympus Mons, with the presenter.
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Mars often referred to as the "Red Planet" boasts the tallest volcano in our solar system Olympus Mons. DID YOU KNOW? This colossal shield volcano stands height of approximately 72,000 feet 21.9 km, towering over Mount Everest the tallest mountain on Earth. Formed by ancient volcanic activity Olympus Mons is a captivating feature on Mars illustrating the planet's unique geological history. Despite its impressive size this giant volcano is thought to be dormant, offering a fascinating glimpse into Mars' dynamic past. NOW YOU KNOW!
Jupiter: Jupiter's Great Red Spot Is Wider Than Earth
The Great Red Spot is a giant anticyclone in Jupiter's southern hemisphere, wider than Earth though it has been shrinking. It has been observed continuously since 1878, with records back to 1831. A similar spot was seen from 1665 to 1713; if it was the same storm, it would be over 350 years old, but a 2024 study suggested it wasn't. Jupiter also has the strongest planetary magnetic field in the solar system, which traps intense radiation belts that spacecraft must be shielded against. The footage shows renderings and images of Jupiter, with the presenter.
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Jupiter the largest planet in our solar system has a remarkable feature known as the Great Red Spot. DID YOU KNOW? This enormous storm has been raging for at least 350 years making it one of the longest lasting storms in the solar system. The Great Red Spot is so massive that it could engulf earth several times over. Despite being a storm its exact mechanism and the reason for its long duration remain areas of scientific interest and study. Jupiter's strong magnetic field also creates intense radiation belts, making it challenging for spacecraft to explore its vicinity. NOW YOU KNOW!
Saturn: Saturn's Rings Have a 4,800 km Gap
The Cassini Division is a roughly 4,800 km wide region between Saturn's A and B rings, discovered by Giovanni Domenico Cassini in 1675. It looks empty from Earth but contains thinner, sparser ring material. It's largely cleared by a 2:1 orbital resonance with the moon Mimas. NASA's Cassini spacecraft orbited Saturn from 2004 until it was deliberately plunged into the planet in 2017, studying the rings in detail. The footage shows renderings of Saturn and its rings, with the presenter.
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Saturn, renowned for its spectacular ring system, has a captivating feature known as the Cassini Division. DID YOU KNOW? Discovered by Giovanni Cassini in the 17th century, this division is a noticeable gap between the A and B rings of Saturn. While the rings may appear continuous from a distance, the Cassini Division reveals itself as a dark, empty region creating a striking visual effect. The Cassini spacecraft, which orbited Saturn from 2004 to 2017, provided invaluable insights into the intricate details of the rings, enhancing our understanding of the dynamics and composition of this remarkable celestial phenomenon. NOW YOU KNOW!
Uranus: Uranus Rolls Around the Sun on Its Side
Uranus, the seventh planet from the Sun, is an ice giant whose rotation axis is tilted about 98 degrees (97.77°) relative to its orbit, so it essentially spins on its side. Over its 84-year orbit, each pole spends about 42 years in sunlight and then 42 years in darkness, giving it the most extreme seasons of any planet. The cause of the tilt isn't settled; a leading idea is one or more giant impacts early in the solar system's history. Voyager 2 is the only spacecraft to have visited, flying past in 1986. The footage shows renderings of Uranus and its rings, with the presenter.
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Uranus, the seventh planet from the sun, possesses a distinctive feature: it rotates on its side. DID YOU KNOW? Unlike most planets in our solar system that rotate on an axis roughly perpendicular to their orbits, Uranus is tilted at an extreme angle of about 98 degrees. This unique axial tilt gives Uranus its peculiar rolling motion, where its poles take turns facing the sun. The exact cause of Uranus' extreme tilt remains a subject of scientific investigation, adding an intriguing aspect to this distant ice giant. NOW YOU KNOW!
Neptune: Neptune's Winds Outrun a Jet Airliner
Neptune, the eighth planet, has the strongest sustained winds measured on any planet in the solar system, up to about 2,100 km/h (around 1,300 mph). When Voyager 2 flew past in 1989, it photographed a huge storm in the southern hemisphere, the Great Dark Spot, comparable in scale to Jupiter's Great Red Spot. Unlike Jupiter's long-lived storm, Neptune's dark spots aren't permanent; later Hubble images showed that spot gone and new ones forming. Bright, high clouds of methane ice also streak across the planet. The footage shows Voyager-style images of Neptune and clouds, with the presenter.
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Neptune has a vivid and dynamic atmosphere. DID YOU KNOW? Neptune's atmosphere is marked by stunning cloud formations, including the famous Great Dark Spot, a massive storm system similar to Jupiter's Great Red Spot. Additionally, Neptune experiences extremely strong winds, with speeds reaching up to fifteen hundred mph or twenty-four hundred kph making them some of the fastest winds observed in our solar system. The mysterious and ever-changing features of Neptune's atmosphere make it a fascinating celestial body to study. NOW YOU KNOW!
Pluto: Pluto Has a Heart Made of Ice
Clyde Tombaugh discovered Pluto in 1930 at Lowell Observatory, and it was counted as the ninth planet until August 24, 2006, when the International Astronomical Union defined 'planet' in a way that made Pluto a dwarf planet. NASA's New Horizons flew past in July 2015 and photographed a bright, heart-shaped region named Tombaugh Regio after its discoverer. The heart's western lobe, Sputnik Planitia, is a vast basin of nitrogen, carbon monoxide and methane ices; the eastern lobe is uplands coated with nitrogen ice. The footage shows New Horizons images of Pluto, the observatory dome and icy terrain, with the presenter.
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Pluto once considered the ninth planet in our solar system, was reclassified as a dwarf planet by the International Astronomical Union in 2006. DID YOU KNOW? Despite its diminutive size, Pluto has a heart-shaped feature on its surface officially named Tombaugh Regio after Clyde Tombaugh, who discovered Pluto in 1930. This heart-shaped region also known as Pluto's heart or love is a large plain of nitrogen and other ices. NOW YOU KNOW!
Eagles: An Eagle's Eyes Resolve Finer Detail Than Yours
Eagles have large eyes with densely packed photoreceptors and deep foveae, which let them resolve fine detail at a distance. Behavioral studies show some large-eyed raptors, such as the wedge-tailed eagle, have about twice the spatial resolution of humans; the popular '4 to 8 times' figures don't match those measurements. Their forward-facing eyes also give a useful field of binocular vision for judging distance when striking prey. The footage shows a bald eagle perched and swooping over water, with the presenter.
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Eagles have extraordinary eyesight, enabling them to spot prey from incredible distances. DID YOU KNOW? Some eagle species can see up to 8x more clearly than humans. Their sharp vision is essential for hunting and soaring through the skies with precision. NOW YOU KNOW!
Taj Mahal: The Taj Mahal's Marble Shifts Color Through the Day
The Taj Mahal in Agra, India, is a white marble mausoleum that Mughal emperor Shah Jahan built for his wife Mumtaz Mahal; construction ran from about 1631 to 1653. Its polished white marble reflects the color of the light falling on it, so visitors often describe it as pinkish at dawn, bright white or golden by day and soft or silvery by moonlight. It's been a UNESCO World Heritage Site since 1983 and was named one of the New 7 Wonders in 2007. The footage shows the Taj Mahal and its gardens at different times of day, with the presenter.
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The Seven Wonders of the New World No. 7 The Taj Mahal DID YOU KNOW? Color of the Taj Mahal can change throughout the day. The iconic white marble of the Taj Mahal appears different shades depending on the sunlight. During sunrise the Taj Mahal often has a pinkish hue. While it can appear golden in the afternoon sunlight, as the sun sets the monument may take on a more translucent milky-white glow. This color changing phenomenon is one of the many reasons why the Taj Mahal is considered one of the most visually stunning and romantic architectural wonders in the world. The play of light on the pristine marble creates a captivating and ever changing experience for visitors. NOW YOU KNOW!
Starfish: A Sea Star Can Regrow a Lost Arm
Sea stars, often called starfish, are echinoderms, related to sea urchins and sand dollars, not fish. Many can regrow lost arms, a process that can take months to a year or more. Because most of their vital organs extend into the arms, some species can regenerate a whole new animal from a single severed arm, as long as it keeps part of the central disc; a few, such as some Linckia species, can do it from an arm alone. Some also reproduce asexually by splitting. The footage shows sea stars on the seabed and close-ups of their tube feet.
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Starfish also known as sea stars are remarkable creatures capable of regenerating lost body parts. DID YOU KNOW? If starfish loses an arm it can often grow a new one. In some cases a severed arm can even regenerate an entirely new starfish, making them exceptional in the realm of regenerative abilities in the animal kingdom. NOW YOU KNOW!
The Colosseum: Rome's Colosseum Had a Retractable Roof Made of Fabric
The Colosseum (Flavian Amphitheatre) in Rome was completed in AD 80 under Emperor Titus and could hold tens of thousands of spectators for gladiator fights and animal hunts. It had a velarium, a retractable awning of canvas or sailcloth that could shade much of the seating. It was hung from ropes and masts set in brackets around the top of the outer wall; sailors specially enlisted from the Roman naval headquarters at Misenum and housed nearby worked it. Historians debate how it was rigged. The Colosseum is part of the Historic Centre of Rome World Heritage Site and was named one of the New 7 Wonders in 2007. The footage shows a reconstruction of the arena and its seating, with the presenter.
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The Seven Wonders of the New World No. 6 DID YOU KNOW? the Roman Colosseum had a retractable awning known as the velarium. The velarium was a massive canvas or sail-like covering that could be pulled over the top of the amphitheater to provide shade for the spectators during events. This ingenious system consisted of a series of ropes and pulleys attached to masts on the upper levels of the Colosseum. The primary purpose of the velarium was to shield the audience from the sun and provide relief from the heat, creating a more comfortable environment for the tens of thousands of spectators attending events, such as gladiator contests and animal hunts. The velarium could be adjusted to different positions to control the amount of shade, showcasing the advanced engineering and architectural innovations employed in the construction of the Colosseum. NOW YOU KNOW!
Chichen Itza: At the Equinoxes, a Shadow Serpent Slides Down a Pyramid
Chichen Itza is a large pre-Columbian Maya city on Mexico's Yucatán Peninsula and a UNESCO World Heritage Site since 1988. Its central pyramid, the Temple of Kukulcán, also called El Castillo, has a stairway on each side. Around the spring and autumn equinoxes, the late-afternoon sun casts triangles of light and shadow from the pyramid's stepped corner onto the northern stairway's balustrade, which ends in carved serpent heads; the effect looks like a serpent descending. Chichen Itza was among the New 7 Wonders of the World announced on July 7, 2007, in a popular vote run by the New7Wonders Foundation. The footage shows the pyramid, the serpent heads and the presenter.
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The Seven Wonders of the New World No. 5 Chichen Itza DID YOU KNOW? Chichen Itza, a large pre-Columbian archaeological site in Mexico, has remarkable astronomical and architectural features. The design of the Kukulkan pyramid, also known as El Castillo, is aligned with such precision that during the spring and autumn equinoxes, a shadow on the pyramid creates an illusion of a serpent slithering down the staircase. This phenomenon is popularly known as the descent of Kukulkan or the Dance of the Serpent. The sunlight and shadow play aligns perfectly with the carved serpent head at the base of the staircase. This intricate astronomical knowledge and architectural precision demonstrate the advanced understanding of the cosmos by the ancient Mayan civilization that constructed Chichen Itza. NOW YOU KNOW!
Polar: Polar Bears Are Classified as Marine Mammals
Polar bears (Ursus maritimus) are strong swimmers and are classed as marine mammals because they spend much of their lives on sea ice and in the sea. Their name means 'maritime bear'. They hunt mainly seals from the ice and can swim long distances between floes, paddling with their large front paws. As sea ice shrinks, some bears have been tracked making very long swims. The footage shows polar bears on ice and in water, with the presenter.
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Polar Bears are excellent swimmers and can swim for long distances in search of food. DID YOU KNOW? The polar bears' ability to cover extensive distances in water showcases their remarkable adaptation to the Arctic environment. NOW YOU KNOW!
Machu Picchu: The Spanish Never Found Machu Picchu
Machu Picchu is a 15th-century Inca citadel on a mountain ridge above the Urubamba valley in Peru. Most archaeologists think it was built as an estate for the Inca emperor Pachacuti, around 1450. It was abandoned about a century later, around the time of the Spanish conquest, and there's no record of the Spanish ever reaching it. Local farmers knew the site; the American historian Hiram Bingham brought it to international attention in 1911. UNESCO listed it as a World Heritage Site in 1983, and it was named one of the New 7 Wonders of the World in 2007. The footage shows Machu Picchu and Inca-style portraits, with the presenter. This is No. 4 in his Seven Wonders of the New World series.
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The Seven Wonders of the New World No. 4 Machu Picchu DID YOU KNOW? Machu Picchu's exact purpose and function remain a mystery. While it is widely believed to have been a royal estate for the Inca emperor Pachacuti, there was no definitive evidence as to its specific use. Machu Picchu was often referred to as the Lost City of the Incas, and was abandoned in the 16th century during the Spanish conquests, contributing to its mysterious aura. The site was never mentioned in any Spanish conquistador accounts, and it remained relatively unknown to the outside world until its rediscovery in 1911 by American historian and explorer Hiram Bingham. Despite extensive research and archaeological studies, the exact purpose of Machu Picchu continues to be a subject of speculation and debate among historians and archaeologists. The enigmatic nature adds to its allure and fascination. NOW YOU KNOW!
Blackbird: No Crewed Jet Has Officially Flown Faster Than the SR-71
The Lockheed SR-71 'Blackbird' is a retired long-range, high-altitude, Mach 3+ strategic reconnaissance aircraft developed in the 1960s by Lockheed's Skunk Works from the earlier A-12. It first flew in 1964 and was operated by the US Air Force. Its standard tactic against surface-to-air missiles was to accelerate and outrun them, and no SR-71 was lost to enemy fire. It set the absolute speed record for an air-breathing crewed aircraft, 3,529.6 km/h (2,193.2 mph), in 1976, which still stands. The Air Force retired it in 1998 and NASA flew its last in 1999. The footage shows SR-71s in flight and on the ground, with the presenter.
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The Lockheed SR-71 Blackbird held the title of the world's fastest aircraft for several decades. DID YOU KNOW? Developed in the 1960s, this reconnaissance aircraft could reach speeds exceeding Mach 3 over 3x the speed of sound. Its incredible speed allowed it to outrun and evade enemy missiles during reconnaissance missions, making it a crucial asset during the Cold War. Even today, the SR-71 remains an iconic symbol of advanced aerospace engineering and high speed flight. NOW YOU KNOW!
Christ the Redeemer: Rio's Christ the Redeemer Is 30 m Tall on an 8 m Pedestal
Christ the Redeemer is an Art Deco statue of Jesus Christ on Corcovado mountain in Rio de Janeiro, Brazil. It was designed by French sculptor Paul Landowski and Brazilian engineer Heitor da Silva Costa, with French engineer Albert Caquot; Romanian sculptor Gheorghe Leonida sculpted the face. Built of reinforced concrete with a soapstone skin, it was constructed between 1922 and 1931 and dedicated on October 12, 1931. It stands 30 m (98 ft) tall, excluding its 8 m (26 ft) pedestal, with arms 28 m (92 ft) wide. It was named one of the New 7 Wonders of the World on July 7, 2007. The footage shows the statue, Rio and portraits, with the presenter. This is No. 3 in his Seven Wonders of the New World series.
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The Seven Wonders of the New World No. 3 Christ the Redeemer DID YOU KNOW? Christ the Redeemer, the iconic statue in Rio de Janeiro, Brazil, was originally planned to be much smaller than the final design The idea for the statue was proposed in the 1920s to honor the Centennial of Brazil's independence from Portugal. The initial design for the statue was more modest, standing at around 46m or 150ft tall, however, when the project was approved, a competition was held to select the best design. The winning design, submitted by Polish-French sculptor Paul Landowski, was much larger and more ambitious, resulting in the towering Christ the Redeemer we now recognize, standing at approximately 30m or 98ft tall, with an additional 8m or 26ft pedestal. The construction of Christ the Redeemer took place between 1926 and 1931, and it has since become one of the new Seven Wonders of the world, attracting millions of visitors each year. NOW YOU KNOW!
Emperor Penguins: Emperor Penguin Fathers Fast for About Four Months
Emperor penguins (Aptenodytes forsteri) breed during the Antarctic winter, when temperatures can fall below -40 °C, which is also -40 °F. The female lays a single egg and passes it to the male, then heads to sea to feed. The male balances the egg on his feet under a fold of skin, the brood pouch, for about two months, huddling with other males against winds of up to 200 km/h. It's the only penguin species where the male alone incubates. By the time the egg hatches he will have fasted for around 120 days since arriving at the colony. The female returns to take over the chick. The footage shows emperor penguins, eggs and chicks on the ice.
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Emperor penguins have a unique and challenging parenting strategy. DID YOU KNOW? In the harsh conditions of Antarctica, where temperatures can drop as low as -40 degrees Celsius or -40 degrees Fahrenheit, emperor penguins engage in a remarkable breeding cycle. After laying a single egg, the female transfers it to the male for incubation. The male emperor penguin then cradles the egg on its feet and covers it with a flap of abdominal skin to keep it warm. During this incubation period, which lasts for about two months, the male goes without eating, relying on stored energy reserves. Meanwhile, the female embarks on a long journey to the sea to feed and replenish her energy. When she returns, the male, often weakened and hungry, transfers the hatched chick back to the female. This intricate and challenging parenting strategy allows emperor penguins to adapt to the extreme conditions of their environment. NOW YOU KNOW!
Petra: A Swiss Explorer in Disguise Reached Petra in 1812
Petra, in southern Jordan, was the capital of the Nabataean kingdom, known for its rock-cut facades and water-conduit system. It remained known to local Bedouin, but was largely unknown to Europeans after the Crusades. In 1812 the Swiss explorer Johann Ludwig Burckhardt, traveling as 'Sheikh Ibrahim ibn Abdallah', persuaded a guide to take him there on the pretext of sacrificing a goat at the tomb of Aaron nearby. UNESCO listed Petra as a World Heritage Site in 1985, and it was named one of the New 7 Wonders of the World in 2007. It's Jordan's most visited tourist attraction. The footage shows renderings of Petra's facades and Burckhardt, with the presenter. This is No. 2 in his Seven Wonders of the New World series.
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The Seven Wonders of the New World No. 2 Petra DID YOU KNOW? Petra, an archaeological site in Jordan known for its rock-cut architecture and water conduit system, was lost to the western world for centuries. Despite being a significant city in ancient times, Petra became a lost city as its existence was largely forgotten by the western world during the medieval period. The city was rediscovered by a Swiss explorer named Johann Ludwig Burkhardt in 1812. Burckhardt posing as a Bedouin and using the name Sheikh Ibrahim ibn Abdallah, infiltrated the region and convinced the locals to guide him to the ancient city. His rediscovery brought Petra back to the attention of the world It has since become a UNESCO World Heritage Site and one of Jordan's most visited tourist attractions. NOW YOU KNOW!
Plasma: Most Visible Matter in the Universe Is Plasma
Plasma is often called the fourth state of matter, after solid, liquid and gas. It forms when a gas is energized enough, by heat or a strong electric field, that electrons are stripped from atoms, leaving a mix of free electrons and positive ions. Because it contains free charges, plasma conducts electricity and responds strongly to magnetic fields. It makes up most of the ordinary visible matter in the universe, including stars like the Sun. On Earth it appears in lightning, auroras, neon and fluorescent lights, and some flames. Plasma physics underpins fusion research and industrial uses such as chip etching. The footage shows plasma balls, lightning, lamps and flames.
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Plasma is often referred to as the fourth state of matter. DID YOU KNOW? While most people are familiar with the three common states of matter, solid, liquid, and gas, plasma represents a unique and less commonly encountered state. Plasma is essentially a hot ionized gas where the electrons have been stripped from resulting in a mix of free electrons and positively charged ions. Due to its high energy state, plasma exhibits unique properties such as the ability to conduct electricity and respond to magnetic fields. Plasma is abundant in the universe, making up the majority of visible matter in stars, including our sun. Lightning, fluorescent lights, and certain types of flames are examples of plasma here on earth. Studying and harnessing of plasma is crucial in fields such as astrophysics, fusion research, and plasma technology applications. NOW YOU KNOW!
Tigers: Every Tiger's Stripes Are as Unique as a Fingerprint
Tigers (Panthera tigris) have stripe patterns unique to each animal, so researchers can identify individuals from photographs. Camera-trap surveys use this to estimate how many tigers live in an area and to track them over time, which is central to conservation. The stripes, which run onto the skin, are thought to help break up the cat's outline in tall grass and forest. The footage shows tigers in the wild, with the presenter.
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Tigers have unique stripe patterns. DID YOU KNOW? Much like human fingerprints, no two tigers have the same stripe pattern, making it possible to identify individual tigers based on their distinctive markings. This characteristic is not only visually striking, but also serves as a valuable tool for researchers and conservationists involved in studying and protecting these magnificent big cats. NOW YOU KNOW!
The Great Wall: The Great Wall Isn't One Wall
The Great Wall of China is a series of fortifications built across northern China over roughly two millennia, from the 7th century BC through the Ming dynasty, to guard against raids from the steppe. After unifying China in 221 BC, Qin Shi Huang connected and extended earlier walls. Much of what stands today dates from the Ming (1368-1644). Builders included soldiers, conscripted peasants and convicts. A 2012 survey by China's State Administration of Cultural Heritage measured all its branches at about 21,196 km. UNESCO listed it as a World Heritage Site in 1987, and it was named one of the New 7 Wonders of the World in 2007. The footage shows renderings of the wall, workers and Qin Shi Huang, with the presenter. This is No. 1 in his Seven Wonders of the New World series.
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The Seven Wonders of the New World No. 1 the Great Wall of China DID YOU KNOW? The labor force used to build the Great Wall included soldiers, peasants and prisoners. The workforce was massive with estimates suggesting that hundreds of thousands of workers were involved in the construction. It's also worth noting that the Great Wall was not a continuous wall but rather a series of walls and fortifications built by different dynasties over the centuries. Qin Shi Huang, the first emperor of China, is often credited with connecting and extending existing walls to form a more cohesive defense against invasions from nomadic groups in the north. The Great Wall stands as a remarkable testament to ancient engineering and strategic military planning. NOW YOU KNOW!
Now You Know Anime: Naruto, One Punch Man and Death Note Top This List
In this Reel the presenter, speaking to camera, runs through favorite Japanese animated series: Naruto, about an outcast ninja who dreams of leading his village; One Punch Man, about a hero who defeats any enemy with one punch; Death Note, about a student with a notebook that kills; Hunter x Hunter, whose manga has gone on repeated long hiatuses; and Jujutsu Kaisen, known for its fight animation. The Reel is a review with clips; the opinions in it are the Reel's.
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I'm a huge fan of anime! So I'm just gonna go over a few of my favorites. I've got to mention Naruto. I really grew up watching this show, and the loner kid who's ostracized by everyone that he knows and he has this seemingly impossible dream he's gonna grow up and achieve, being the leader of his village, the face of the ninja world, it's really something special. One Punch Man. Kind of lukewarm in the beginning, he's just the most powerful person in his world right, but he can't do simple things. Super enjoyable for me. All time, one of the greatest animes ever made. Light should have won. He's this almost all-knowing guy who doesn't make mistakes, he doesn't fail or anything. That's all I'll say. Everything you're looking for in a shonen adventure anime. There are rumors circulating it might be coming back, so fingers crossed. Jujutsu Kaisen. Every fight, I feel like I'm watching an AMV. It's just so over the top. Yeah, they throw hands in this anime, they box constantly. NOW YOU KNOW!
Now You Know Rocket League: One Car-Soccer Game Cost Me About 6,000 Hours
In this talking-head Reel I talk about my own history with Rocket League: playing since undergrad, an estimated 6,000 hours, and why its learning curve hooked me. Every movement is manual, unlike sports games where players move on their own. Rocket League is a vehicular soccer game developed and published by Psyonix, released in July 2015 for PlayStation 4 and Windows, and later on Xbox One and Nintendo Switch. Epic Games bought Psyonix in 2019, and the game went free-to-play in September 2020. Gameplay clips play under the talking-head section.
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DID YOU KNOW? This is Rocket League Rocket League is this car soccer game that I was absolutely obsessed with for about four or five years. I started playing with my friends back in undergrad long time ago and I was hooked since then. You'll have a bunch of my clips playing at the bottom portion of this beneath this talking head section of the video. You can see the kind of stuff that I was getting up to. I racked up about 6,000 hours in this game maybe? That's estimates, my console account is long gone and my PC account I can't really access as... The appeal for me for this game really comes from the learning curve. So you start out and it's ridiculously hard you have to do everything in the game by yourself every movement, every input that you're seeing, I have to do on the controller or on the keyboard myself. Other games like FIFA you press a button to shoot, you press a button to pass, the characters will move around on the field by themselves you don't have to think about it too much it's not as involved. But for Rocket League... Man you gotta focus all the time it's crazy! But once you start getting really good at it start feeling yourself get better and better, gameplay gets better and better, it's so addicting and it's so much fun. That's why I had to stop playing it. Got really busy with school and with work and now I'll play maybe once every two weeks once a month. NOW YOU KNOW!
Jack: London's Most Famous Murders Were Never Solved
Jack the Ripper is the name given to an unidentified serial killer active in and around the Whitechapel district of London in 1888. Five victims, Mary Ann Nichols, Annie Chapman, Elizabeth Stride, Catherine Eddowes and Mary Jane Kelly, are known as the 'canonical five'; they were killed between 31 August and 9 November 1888. Police investigated eleven Whitechapel murders between 1888 and 1891, but not all are linked to the same killer. Several canonical victims had organs removed, which led some at the time to suggest the killer had anatomical knowledge. The killer was never identified, and many suspects have been proposed since. The footage shows dark AI-style renderings of Victorian London and a figure in a top hat.
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JACK THE RIPPER the unidentified serial killer who terrorized London in the late 19th century is known for the gruesome nature of his murders. DID YOU KNOW? Jack is believed to have k****d and m*******d at least five women in the Whitechapel district of London between 1888 and 1891. The killer's method of m********g his victims particularly the removal of their organs added an extra layer of horror to the already gruesome crimes. Jack the Ripper's identity remains unknown contributing to the enduring mystery and fascination surrounding these infamous murders. NOW YOU KNOW!
Martha: Martha Washington Once Rode a Horse up a Staircase
Martha Dandridge Custis Washington (1731-1802) was the wife of George Washington and the first first lady of the United States. Her biography on Wikipedia notes she took to riding as a girl, once riding her horse up and down the stairs of her uncle's house. During the Revolutionary War she traveled to the Continental Army's winter encampments each year of the war, supporting the officers and troops, according to George Washington's Mount Vernon. Her first husband, Daniel Parke Custis, died in 1757, and she married Washington in 1759. The footage shows AI-style portraits and riding scenes, with the presenter.
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Martha Washington was an accomplished horsewoman. DID YOU KNOW? She was known for her love of riding and often accompanied her husband during the Revolutionary War providing comfort and support to the troops. Martha Washington's horsemanship extended beyond mere leisure she was skilled in managing the estate stables, and played a crucial role in overseeing the breeding and training of horses. Her passion for horses and equestrian pursuits showcased her active involvement in both the domestic and public aspects of life during a significant period in American history. NOW YOU KNOW!
Quasi-Stellar: Some of the Brightest Objects in the Universe Are Feeding Black Holes
A quasar is an extremely luminous active galactic nucleus: a supermassive black hole at the center of a galaxy surrounded by a gaseous accretion disk. As gas falls toward the black hole it heats up and releases enormous energy across the electromagnetic spectrum, often outshining the host galaxy. The name comes from 'quasi-stellar radio source', because the first ones found in the 1950s and 60s looked like faint stars. Maarten Schmidt identified the redshift of quasar 3C 273 in 1963, showing quasars are very distant. The footage shows renderings of galaxies, accretion disks and black holes.
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Quasars are extremely luminous and energetic objects found at the centers of distant galaxies. DID YOU KNOW? The term quasars stands for Quasi-Stellar Radio Source, reflecting their star like appearance when observed through early telescopes. Despite their appearance, quasars are not stars but rather active galactic nuclei powered by supermassive black holes. The intense energy emitted by quasars is generated as matter spirals into the black hole forming an accretion disk. This process releases tremendous amounts of energy across the electromagnetic spectrum making quasars some of the brightest and most distant objects observed in the universe. NOW YOU KNOW!
The Red Forest: Radiation From Chernobyl Turned a Pine Forest Ginger-Brown
The Red Forest is the roughly 10 km² (4 sq mi) area of woodland around the Chernobyl Nuclear Power Plant in the Exclusion Zone, in Polesia in The Ukraine. After reactor 4 exploded on April 26, 1986, the pine trees there absorbed very high doses of radiation and died, turning a ginger-brown color that gave the forest its name. During the cleanup the dead trees were bulldozed and buried in trenches. The area remains among the most contaminated in the zone, and wildfires there have raised concern about radioactive smoke. The footage shows the plant and red-tinted forest imagery.
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This is the Red Forest an area near the Chernobyl reactor where pine trees turned red and died due to high levels of radiation. DID YOU KNOW? The intense radiation caused the chlorophyll in the trees to break down leading to this eerie and vivid transformation. The Red Forest serves as a lasting and visible reminder of the environmental impact of the catastrophic nuclear event that occurred on April 26th, 1986 at the Chernobyl nuclear power plant in Ukraine. NOW YOU KNOW!
Lighthouse of Alexandria: An Ancient Lighthouse Stood About 100 m Tall for Over 1,500 Years
The Lighthouse of Alexandria, often called the Pharos, was built on the island of Pharos at Alexandria during the reign of Ptolemy II, completed around 280 BC. Estimates put its height above 100 m (330 ft), making it one of the tallest human-made structures for centuries. A fire at the top, reflected by a mirror according to later accounts, guided ships into the harbor. Three earthquakes between 956 and 1303 AD badly damaged it and it became a ruin; in 1480 the Citadel of Qaitbay was built on its site using some of its stone. Its name lives on in the word for lighthouse in several languages, such as French phare. The footage shows renderings of the lighthouse and harbor. This is No. 7 in his Seven Wonders of the Ancient World series.
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The Seven Wonders of the Ancient World No. 7 the Lighthouse of Alexandria DID YOU KNOW? The Lighthouse of Alexandria was a marvel of ancient engineering. Constructed on the small island of Pharos in the 3rd century BC, the lighthouse served as a guiding beacon for sailors entering the busy harbor of Alexandria. Standing at an estimated height of around 100 to 130 meters or 330 to 430 feet, it was one of the tallest structures in the ancient world. What's interesting is that the lighthouse was designed with a large open flame at its pinnacle, making it not only a navigational aid, but also a symbolic representation of the eternal flame of knowledge. Unfortunately, like many ancient wonders, the Lighthouse of Alexandria was eventually destroyed by a series of earthquakes in the medieval period. NOW YOU KNOW!
Last of Ants: A Fungus Makes Ants Climb to the Perfect Spot to Die
Ophiocordyceps unilateralis is a parasitic fungus, now treated as a species complex, that infects carpenter ants in tropical forests. An infected ant leaves its colony, climbs vegetation and bites down on a leaf vein in a 'death grip', usually at a height and humidity that suit the fungus. The fungus then kills the ant, grows a stalk from the back of its head and releases spores onto ants foraging below. Research led by David Hughes found the fungus spreads through the ant's body and muscles, while the brain largely stays free of fungal cells, so the control seems to work through the muscles and chemistry rather than by occupying the brain. The fungus is popularly known as the 'zombie-ant fungus'. The footage shows infected ants and fungal growth.
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Ophiocordyceps a genus of parasitic fungi has the ability to infect and manipulate the behavior of insects. DID YOU KNOW? Cordyceps Unilateralis primarily targets ants. After infection the fungus takes control of the ant's central nervous system compelling it to leave its colony and climb vegetation. The ant then attaches itself to a leaf or twig, and the fungus k***s the ant. The fungus then sprouts a stalk-like structure from the ant's head releasing spores to infect more ants on the ground below. This intricate manipulation of host behavior showcases the remarkable strategies fungi can employ for their survival and reproduction. NOW YOU KNOW!
Colossus of Rhodes: One Ancient Wonder Stood for Barely Half a Century
The Colossus of Rhodes was a bronze statue of the sun god Helios, about 33 m (108 ft) tall, built by Chares of Lindos to celebrate Rhodes surviving a siege in 305-304 BC. Completed around 280 BC, it was made of bronze plates over an iron framework. An earthquake in 226 BC snapped it at the knees, and it lay where it fell for centuries; Pliny the Elder reported that even fallen it was a marvel. In 653 AD an Arab force under Muawiya took Rhodes and, by later accounts, sold the remains for scrap. The famous image of the statue straddling the harbor entrance is a medieval idea; modern scholars think it stood on land, as ships could not have passed under it and the harbor would have been blocked during construction. The footage shows renderings of the statue and harbor. This is No. 6 in his Seven Wonders of the Ancient World series.
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The Seven Wonders of the Ancient World No. 6 The Colossus of Rhodes DID YOU KNOW? The Colossus of Rhodes was a massive bronze statue of the sun god Helios erected on the island of Rhodes in the 3rd century BC. The Colossus was said to be over 100 feet tall and was built using a framework of iron and bronze plates. According to ancient accounts, it stood at the entrance of the harbor and ships would pass between its legs. Despite its fame, the Colossus stood for only a relatively brief period. It was toppled by an earthquake in 226 BC, just 56 years after its completion. Legend has it that it lay in ruins for nearly 900 years before it was eventually sold as scrap metal. NOW YOU KNOW!
Lucky Stripe: Biting Flies Struggle to Land on Zebras
Why zebras are striped has been debated since Darwin and Wallace. The best-supported explanation today is protection against biting flies such as horse flies (tabanids), which spread disease. In a 2019 PLOS ONE study, Tim Caro and colleagues filmed flies around zebras and horses in the UK and found flies approached zebras but failed to slow down and land as often as on horses; horses wearing striped coats also got fewer landings. Other ideas, such as camouflage, social signaling and heat control, have weaker support. The footage shows zebras grazing and close-ups of flies.
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Zebras are known for their distinctive black and white stripes but this pattern serves as more than just a visual spectacle. The stripes on a zebra's coat have a functional purpose they act as a natural form of insect repellant. DID YOU KNOW? Studies suggest that the black and white stripes may help deter biting flies, such as horseflies, which are known to transmit diseases. Stripes create a visual disruption making it difficult for these blood sucking insects to land on the zebra's skin. This adaptation is a clever example of how animals use their physical characteristics for both protection and survival in their natural environments. NOW YOU KNOW!
Mausoleum at Halicarnassus: Every Mausoleum Is Named After One Man's Tomb
The Mausoleum at Halicarnassus (modern Bodrum, Turkey) was a tomb about 45 m high, completed around 351 BC. It was built for Mausolus, a satrap of Caria under the Persian Achaemenid Empire, and his sister-wife Artemisia II, who oversaw the work after his death. Its architects were Satyros and Pythius of Priene, and its sculpture is credited to leading Greek sculptors. It was so famous that 'mausoleum' became the general word for a grand tomb. A series of earthquakes between the 12th century and 1402 wrecked it, and the Knights of St John reused its stones; demolition was complete by 1494. The footage shows renderings of the tomb and its ruins, with the presenter. This is No. 5 in his Seven Wonders of the Ancient World series.
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The 7 Wonders of the Ancient World No. 5 the Mausoleum at Halicarnassus DID YOU KNOW? The Mausoleum at Halicarnassus was a monumental tomb built for Mausolus a Persian satrap in the 4th century BC and his wife Artemisia. After Mausolus' death Artemisia commissioned the construction of a grand tomb in his honor. The mausoleum was an impressive blend of architectural styles adorned with intricate sculptures and reliefs. The word mausoleum eventually became a generic term for any grand tomb owing to the fame and splendor of this particular structure. The Mausoleum at Halicarnassus stood for centuries until it was destroyed by a series of earthquakes in the Middle Ages. NOW YOU KNOW!
Cleo: Cleopatra Was the First of Her Dynasty Known to Speak Egyptian
Cleopatra VII (69-30 BC) was the last active ruler of the Ptolemaic Kingdom of Egypt. Her dynasty descended from Ptolemy I, a Macedonian Greek general, and her first language was Koine Greek. She is the first Ptolemaic ruler known to have learned Egyptian. Plutarch implies she also spoke Ethiopian, the language of the 'Troglodytes', Hebrew (or Aramaic), Arabic, Syrian, Median and Parthian, and Wikipedia notes she could apparently also speak Latin. She formed alliances with Julius Caesar and later Mark Antony, and after her death in 30 BC Egypt became a Roman province. The footage shows AI-style portraits and court scenes, with the presenter.
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Cleopatra also known as Cleopatra VII, was the last active ruler of ancient Egypt and she was known for her intelligence and charisma. DID YOU KNOW? Cleopatra was able to speak multiple languages fluently she was not only proficient in her native Greek but also spoke Egyptian which endeared her to the Egyptian people. she was known to speak Latin, Aramaic and Hebrew, showcasing her linguistic versatility. Cleopatra's linguistic skills played a role in her diplomatic efforts and interactions with influential figures of the time including Roman leaders Julius Caesar and Mark Anthony. NOW YOU KNOW!
Temple of Artemis: A Man Burned an Ancient Wonder to Make Himself Famous
The Temple of Artemis at Ephesus, near modern Selçuk in Turkey, was rebuilt several times. The great marble temple funded in part by Croesus of Lydia, begun around 550 BC, was burned by the arsonist Herostratus in 356 BC. A larger replacement followed, and that later temple is the one counted among the Seven Wonders. Pliny the Elder gave it 127 columns, each 60 feet high. It was plundered by the Goths in 262 AD and finally destroyed in 401 AD. One reconstructed column stands at the site today. The footage shows renderings of columns, statues and a fire. This is No. 4 in his Seven Wonders of the Ancient World series.
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The 7 Wonders of the Ancient World No. 4 The Temple of Artemis at Ephesus DID YOU KNOW? This temple was dedicated to the goddess Artemis the Greek goddess of hunting, wilderness, and wild animals. What makes this temple fascinating is its sheer size and the extravagant decorations. The temple was one of the largest in the ancient world with 127 columns each standing about 60 feet or 18 meters high. What's intriguing is that the temple was destroyed and rebuilt several times throughout its history. The final version completed around 550 BC was more ornate than ever adorned with sculptures and artworks including statues crafted by renowned sculptors such as Phidias. Unfortunately, like many ancient wonders the Temple of Artemis was eventually destroyed by arson in 356 BC. NOW YOU KNOW!
PoisOrVen?: Bite It and Die: Poisonous. It Bites You: Venomous
Poison and venom are both toxins, but they're delivered differently. Venom is injected through a bite, sting or spine, as when a snake uses its fangs. A poison works when it's eaten, inhaled or absorbed, for example through the skin. Poison dart frogs (family Dendrobatidae) are poisonous: their skin secretes alkaloid toxins that can harm a predator that touches or eats them. Wild frogs build those toxins from their diet. The footage shows warning symbols, a snake bite demonstration on a hand, snakes and poison dart frogs, with the presenter.
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The distinction between poison and venom lies in the method of delivery. DID YOU KNOW? Poison is harmful when it is absorbed, ingested, or inhaled. While venom must be injected into the bloodstream. If YOU BITE IT and you die, it's poisonous. If IT BITES YOU and you die it's venomous. So, a snake is venomous because it injects venom into its prey or potential threat through fangs, while a poison dart frog is poisonous because its skin secretes toxins that can be harmful if touched or ingested. NOW YOU KNOW!
Zeus @ Olympia: One of the Ancient Wonders Was Made of Ivory and Gold
The Statue of Zeus at Olympia was a giant seated figure, about 12.4 m tall, made by the Greek sculptor Phidias around 435 BC for the Temple of Zeus at Olympia. It was chryselephantine: ivory plates for the flesh and gold for the robes, over a wooden framework, and it sat on an ornate throne. It was lost in the 5th century AD. One tradition says it was taken to Constantinople and destroyed in the fire of the Palace of Lausus in 475 AD. Another says it perished with the temple, which was badly damaged by fire in 425 AD. The footage shows renderings of the statue, the temple and a fire. This is No. 3 in his Seven Wonders of the Ancient World series.
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The 7 Wonders of the Ancient World No. 3 the statue of Zeus at Olympia The statue of Zeus at Olympia was a masterpiece created by the ancient Greek sculptor Phidias. DID YOU KNOW? It depicted the god Zeus seated on a magnificent throne. What makes it particularly interesting is the use of materials in its construction. The statue was made primarily of ivory and gold with the ivory forming the god's flesh and the gold used for his drapery and other details. This combination of precious materials not only added to the statue's grandeur but also showcased the advanced artistic skills of ancient Greek sculptors. Unfortunately the statue was lost to history likely destroyed in a fire in the 5th century AD. NOW YOU KNOW!
Ada All-Time: A Program Was Written for a Computer That Was Never Built
Ada Lovelace (1815-1852) was an English mathematician who worked with Charles Babbage on his proposed Analytical Engine, a mechanical general-purpose computer. In 1843 she translated an article by Luigi Menabrea about the engine from French and added her own notes, which were longer than the article. Note G sets out an algorithm for computing Bernoulli numbers on the engine, often called the first published computer program. She also suggested the machine could act on things other than numbers, such as music. Historians debate how much credit belongs to her versus Babbage. The engine was never built. The footage shows portraits of Lovelace and Babbage, with the presenter.
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Ada Lovelace often regarded as the world's first computer programmer had an influential partnership with Charles Babbage the inventor of the Analytical Engine a design considered as an early prototype for a general-purpose computer. DID YOU KNOW? While translating an article about Babbage's Analytical Engine from French to English Lovelace added extensive notes and annotations. In her notes she included an algorithm intended for the Analytical Engine to calculate Bernoulli numbers making her the first person to recognize that a machine could manipulate symbols beyond mathematical calculations. Ada Lovelace's foresight went beyond Babbage's ideas laying the groundwork for the concept of computer programming NOW YOU KNOW!
Hanging Gardens: No One Has Found the Hanging Gardens of Babylon
The Hanging Gardens of Babylon are the only one of the Seven Wonders of the Ancient World whose location has never been established. Classical Greek and Roman writers describe terraced gardens and credit them to Nebuchadnezzar II, who reigned c. 605-562 BC and was said to have built them for his wife, Amytis. No Babylonian text mentions them, and excavations at Babylon haven't found definitive evidence. One theory, argued by Stephanie Dalley, places them at Nineveh, the Assyrian capital, built under Sennacherib. Others think they may be legendary. The footage shows renderings of terraced gardens and Babylonian scenes, with the presenter. This is No. 2 in his Seven Wonders of the Ancient World series.
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The 7 Wonders of the Ancient World No. 2 the Hanging Gardens of Babylon DID YOU KNOW? The Hanging Gardens of Babylon are famous for their lush greenery and intricate terraced construction. Despite their historical significance there is some debate among historians about whether the gardens actually existed in Babylon. While classical accounts describe the gardens as a marvel built by King Nebuchadnezzar II for his wife recent archaeological findings have not uncovered definitive evidence of their existence in Babylon. Some theories suggest that if the gardens did exist they might have been located in Nineveh, the capital of the Assyrian Empire. The mystery surrounding the Hanging Gardens adds an extra layer of intrigue to this ancient wonder. NOW YOU KNOW!
Rosalind: One X-Ray Photograph Helped Reveal the Shape of DNA
Rosalind Franklin (1920-1958) was a British chemist and X-ray crystallographer. She worked on the structures of DNA, RNA, viruses, coal and graphite. Photo 51, an X-ray diffraction image of DNA taken in 1952 in her lab at King's College London by her PhD student Raymond Gosling, was shown to James Watson without her knowledge. Together with her data, it was key evidence for the double-helix model Watson and Francis Crick published in 1953. Watson, Crick and Maurice Wilkins shared the 1962 Nobel Prize in Physiology or Medicine. Franklin had died in 1958, and the prize isn't awarded posthumously. The footage shows portraits and lab scenes, with the presenter.
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Rosalind Franklin was a pioneering chemist and X-ray crystallographer who made significant contributions to the understanding of the molecular structures of DNA, RNA, viruses, coal, and graphite. However she is perhaps best known for her work on DNA. DID YOU KNOW? Franklin's famous photograph known as Photo 51 played a crucial role in the discovery of the DNA double helix. James Watson and Francis Crick who later received the Nobel Prize for their work on DNA used Franklin's data as a key piece of evidence. Despite not being credited at the time Franklin's contributions to the understanding of DNA structure have gained recognition and she is celebrated for her groundbreaking work in molecular biology. NOW YOU KNOW!
The Great Pyramid: Only One of the Seven Wonders of the Ancient World Survives
The Great Pyramid of Giza was built for the Fourth Dynasty pharaoh Khufu in the 26th century BC. It is the oldest of the Seven Wonders of the Ancient World and the only one still largely intact. It was originally faced with polished white Tura limestone casing stones. Most were removed or lost over the centuries, but some remain around the base. Its ancient Egyptian name was Akhet Khufu, 'Horizon of Khufu'. It is part of the 'Memphis and its Necropolis' UNESCO World Heritage Site. The footage shows renderings of the pyramid, its builders and casing stones, with the presenter. This is No. 1 in his Seven Wonders of the Ancient World series.
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The 7 Wonders of the Ancient World No. 1 the Great Pyramid of Giza DID YOU KNOW? The Great Pyramid of Giza built during the reign of Pharaoh Khufu is the oldest of the Seven Wonders of the Ancient World and is the only one that remains largely intact today. It was constructed with remarkable precision and the original casing stones made of highly polished Tura Limestone reflected the sun's light and made the pyramid shine like a gem or jewel an effect that earned it the ancient nickname Glorious Light. The smooth reflective surface of the casing stones has weathered or been removed over the centuries but remnants of these stones can still be seen at the base of the pyramid. NOW YOU KNOW!
Coronal Mass Ejection: The Sun Sometimes Throws off Billions of Tons of Itself
A coronal mass ejection (CME) is a large expulsion of plasma and magnetic field from the Sun's corona. According to NOAA's Space Weather Prediction Center, a CME can eject billions of tons of coronal material carrying an embedded magnetic field. When one reaches Earth it can trigger a geomagnetic storm, which can disrupt radio communication and satellites and push auroras to lower latitudes than usual. Wikipedia gives an average mass of about 1.6 × 10^12 kg, noting that estimates are lower limits. The footage shows solar imagery, Earth's magnetic field, city lights from orbit and auroras, with the presenter.
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Coronal Mass Ejections or CMEs, are massive bursts of solar wind and magnetic fields rising above the solar corona or being released into space. DID YOU KNOW? These events can be so energetic that they have the potential to impact Earth's space environment. This Is Interesting For A Few Reasons If a CME were to hit earth directly, it could disrupt communication systems, interfere with satellites, and even create beautiful auroras at high altitudes. What's even more intriguing is the sheer scale of these ejections. The mass of a typical CME is enormous often exceeding that of several Mount Everests combined! This showcases the dynamic and powerful nature of our sun whose activity can have far reaching effects in our solar system. NOW YOU KNOW!
Fireflies: A Firefly's Light Comes From Luciferin and the Enzyme Luciferase
Fireflies, also called lightning bugs, are beetles that produce light in their abdomens. The light comes from a reaction in which the enzyme luciferase acts on a compound called luciferin. Fireflies mainly use their flashes to attract mates, and different species have distinct flash patterns.
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Fireflies, also known as lightning bugs, are perhaps the most well known bioluminescent insects. Did you know? The light they emit is a result of a chemical reaction in their abdomens that involves a light producing pigment called luciferin and an enzyme called luciferase. This is actually really cool because fireflies use their bioluminescence primarily for communication, signaling to potential mates with distinct flash patterns. The enchanting glow of fireflies on a summer evening is a remarkable example of nature's light show. NOW YOU KNOW!
Event Horizon: Nothing, Not Even Light, Escapes From Inside an Event Horizon
A black hole's event horizon is the boundary beyond which nothing, not even light, can escape. Anything that crosses it moves inevitably toward the center, where general relativity predicts a singularity. The horizon results from extreme spacetime curvature caused by mass packed into a small region, and it marks the point of no return.
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Black holes have a boundary known as the Event Horizon, beyond which nothing, not even light, can escape their gravitational pull. Did you know? Once an object crosses this boundary, it is inexorably drawn toward the singularity at the center of the black hole, where gravity becomes infinitely strong. This phenomenon is a consequence of the extreme curvature of spacetime, caused by the concentration of mass in a small region. So, what does this really mean? The Event Horizon essentially marks the point of no return for anything approaching a black hole. It's a concept that challenges our understanding of the fundamental nature of space, time, and gravity. And it's a key feature that makes black holes some of the most enigmatic and mysterious objects in the universe. NOW YOU KNOW!
Hummingbird: Some Hummingbirds Beat Their Wings up to 80 Times a Second
Hummingbirds are among the smallest birds and have one of the highest metabolic rates of any animal. Their wings beat about 10 to 80 times a second depending on species, and they may visit hundreds of flowers a day, drinking large amounts of nectar relative to their body weight. They also eat small insects and spiders for protein.
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Hummingbirds have incredible metabolism and energy consumption. Did you know? Hummingbirds are among the smallest birds, yet they have an extremely high metabolism to support their energetic lifestyle. Now the reason this is so fascinating to me is because to fuel their rapid wing beats, which can range from 50 to 80 beats per second, hummingbirds need to consume large amounts of food. A hummingbird can visit hundreds of flowers in a single day and feed multiple times its body weight in nectar. To maintain their energy levels, hummingbirds feed on nectar-rich flowers, supplementing their diet with small insects and spiders for protein. NOW YOU KNOW!
Nebula: Stars Are Born When Parts of a Nebula Collapse
Nebulae are huge clouds of gas and dust in space. Types include emission nebulae, which glow; reflection nebulae, which scatter starlight; and dark nebulae, which block light behind them. Stars form when dense regions of molecular clouds collapse under gravity into protostars surrounded by disks. Radiation and winds from young, massive stars then shape the surrounding gas and make it glow.
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Nebulas are vast, interstellar clouds of gas and dust, where stars are born. They come in different types, including emission, reflection, and dark nebulas, each revealing distinct characteristics. Did you know? The process of nebula formation begins with a gravitational collapse of a cold, dense region in a molecular cloud. As a region within the cloud collapses, it forms a protostar, a dense, hot core surrounded by a rotating disk of material. What's really interesting to me about this is... Radiation pressure and stellar winds from massive nearby stars, or the developing protostar itself, then act on the surrounding gas and dust, sculpting it into intricate shapes and causing it to glow. This glowing gas forms the beautiful structures we observe in nebulas. NOW YOU KNOW!
Geodes: A Geode Starts as a Bubble or Cavity in Rock
Geodes are hollow rocks lined with crystals. They begin as cavities in volcanic or sedimentary rock, such as gas bubbles in lava. Mineral-rich groundwater seeps in and slowly deposits layers of minerals, often quartz, building crystals inward. The color depends on impurities: amethyst is purple because of iron, combined with natural radiation.
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Geodes are hollow rock formations that contain crystals inside. Did you know? They typically start as bubbles or cavities within sedimentary or volcanic rocks. As mineral-rich groundwater seeps into these cavities, it deposits minerals over time. The slow crystallization process allows for the development of intricate crystal structures. Here's where this gets really cool. The color of the crystals depends on the type of minerals present. For example, amethyst geodes have purple crystals due to the presence of iron and other trace elements. And now you know. NOW YOU KNOW!
Deadliest Tornado in History: The Tri-State Tornado Killed 695 People on March 18, 1925
The Tri-State Tornado of March 18, 1925, crossed Missouri, Illinois and Indiana and killed 695 people, making it the deadliest tornado in U.S. history. Its track was long recorded as 219 miles, the longest on record; a 2013 reanalysis found at least 174 miles was likely one continuous tornado.
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The Tri-State tornado, which occurred on March 18th, 1925, holds the record as the deadliest tornado in U.S. history. As you know, this massive tornado tore through parts of Missouri, Illinois, and Indiana, leaving a path of destruction in its wake. Okay, now you're not going to believe this. This tornado traveled approximately 219 miles during its rampage, making it the tornado with the longest recorded path in history. NOW YOU KNOW!
Tenzing on Top: Tenzing Norgay and Edmund Hillary First Summited Everest on May 29, 1953
Tenzing Norgay, a Sherpa mountaineer, and New Zealander Edmund Hillary became the first people confirmed to reach the summit of Mount Everest on May 29, 1953, as part of a British expedition. Tenzing's exact birth date was not recorded; he is usually said to have been born in the Khumbu region of Nepal, though some accounts place his birth in Tibet. He chose to celebrate his birthday on May 29.
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Tenzing Norgay, a legendary figure in mountaineering, achieved international fame as one of the first two individuals to reach the summit of Mount Everest. In 1953, along with Sir Edmund Hillary, Tenzing Norgay accomplished this historic feat as part of a British expedition. Did you know? Tenzing was born in the Khumbu region of Nepal, and like many individuals from the Sherpa community, his exact date of birth was not recorded. Instead, he celebrated his birthday on May 29th, the day of the Everest Summit, making it an additional element of significance in his remarkable life and achievements. NOW YOU KNOW!
The Atomic Gun: The U.S. Army Fielded a Nuclear Weapon Fired by a Three-Man Crew
The Davy Crockett was a U.S. tactical nuclear weapon system of the Cold War: a recoilless rifle that fired the M388 nuclear projectile. Its W54 warhead had a yield of roughly 10 to 20 tons of TNT, tiny for a nuclear weapon. It was deployed with U.S. Army units, including in West Germany, from 1961 until it was withdrawn by 1971.
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During the Cold War, the United States designed an atomic gun that they called the Davy Crockett. Did you know? The Davy Crockett was intended to be portable, and it had a surprisingly small caliber for a nuclear weapon. The projectile it fired, nicknamed the Atomic Hand Grenade, had an explosive yield in the range of 10 to 20 tons of TNT. This is super cool, because... Despite its small size, the Davy Crockett was part of the U.S. military's tactical nuclear arsenal during the 1960s. The idea of a portable nuclear weapon, even on a small scale, reflects the unique challenges and strategies during the Cold War era. NOW YOU KNOW!
BioInspired Robots: Engineers Copy Insects, Birds and Fish to Build Better Robots
Bioinspired robotics designs machines that copy how animals move and sense. Engineers have built flapping-wing drones modeled on insects and birds, robots that climb like geckos, and robotic fish that swim with flexible bodies. Copying these designs can make robots more agile and better suited to particular environments.
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Researchers often draw [...] to design robots with [...]. For instance, studying the movements and mechanisms of animals like [...] or even fish, has inspired the creation of robots that mimic [...] agility or adaptive behaviors. These bioinspired robots can [...] such as agile flight, crawling and climbing like [...] or even swimming like fish! By emulating nature, scientists aim to develop robots with increased [...] adaptability and capabilities suited for specific environments or [...]. NOW YOU KNOW!
ArisTutor: Aristotle Was Alexander the Great's Teacher
Around 343 BC, King Philip II of Macedon hired the philosopher Aristotle to teach his son Alexander, then about 13. Lessons were held at Mieza and covered subjects such as philosophy, ethics, politics, science and literature. Alexander later conquered an empire stretching to India, spreading Greek culture through the Hellenistic world; how much Aristotle shaped his rule is debated.
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Aristotle tutored Alexander the Great. Did you know? Aristotle was Alexander's personal teacher during his youth, educating him in various subjects including philosophy, science, and literature. His teachings instilled in Alexander a love for learning and a strong foundation in various fields of knowledge. It gets even better. The influence of Aristotle's teachings on Alexander's leadership, his strategies, and the subsequent spread of Hellenistic culture across vast territories continues to be a topic of historical interest and discussion. And now you know. NOW YOU KNOW!
Entanglement: Entangled Particles Stay Correlated However Far Apart They Are
In quantum mechanics, entangled particles share a single quantum state, so measurements on them are correlated no matter how far apart they are. The correlations appear instantly, but they cannot be used to send information faster than light. Albert Einstein, who doubted the idea, called it 'spooky action at a distance.' Experiments have repeatedly confirmed entanglement, work recognized by the 2022 Nobel Prize in Physics.
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Did you know, in quantum mechanics, particles can become entangled, which means the state of one particle is directly related to the state of another, regardless of the distance between them. Okay, here's why this is really cool. This connection seems to occur instantaneously, even faster than the speed of light. Even if entangled particles are separated by vast distances, changing the state of one particle will instantaneously influence the state of the entangled partner. This phenomenon challenges our classical understanding of cause and effect, and has been famously referred to by Albert Einstein as, spooky action at a distance. NOW YOU KNOW!
The Bermuda Triangle: The Bermuda Triangle Is Not Officially Recognized as Dangerous
The Bermuda Triangle, also called the Devil's Triangle, is a loosely defined area of the western North Atlantic roughly bounded by Miami, Bermuda and Puerto Rico. It became famous for stories of ships and aircraft that vanished, often with supernatural explanations. The U.S. Coast Guard does not recognize it as a special hazard, and studies have found that losses there are not more frequent than in other busy waters.
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Did you know the Bermuda Triangle is one of many incredibly mysterious places around the world? Also known as the Devil's Triangle, it is an area in the western part of the North Atlantic Ocean, loosely bounded by points in Miami, Bermuda, and Puerto Rico. The Bermuda Triangle has gained a reputation for alleged paranormal and unexplained phenomena, including the disappearance of ships and aircraft. Awesome, right? I couldn't believe that! Despite its mysterious reputation, there is no official recognition of the area as a real danger by the U.S. government or other maritime organizations. Studies have shown that the rate of accidents and disappearances in the Bermuda Triangle is not significantly higher than in other heavily traveled regions of the world. NOW YOU KNOW!
Performing Emperor: Nero Sang and Acted in Public, to the Dismay of Rome's Elite
The Roman emperor Nero, who ruled from 54 to 68 AD, saw himself as an artist and performed publicly as a singer, lyre player and actor, which many in Rome's elite found shameful. During a tour of Greece he competed in the Olympic Games of 67 AD, which were rescheduled for him. He drove a ten-horse chariot, fell and did not finish, but the judges declared him the winner anyway.
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The Roman Emperor Nero considered himself a talented artist, including as a singer and actor. Did you know? Despite the skepticism and ridicule he faced from the Roman elite for his artistic endeavors, Nero insisted on participating in public performances. What really takes this to the next level is... One example of this is the Olympic Games of 67 AD, where Nero competed as a charioteer and declared himself the winner, even though he fell from his chariot during the race. NOW YOU KNOW!
Chimera: The Chimera Was a Lion, Goat and Serpent in One
In Greek mythology, the Chimera was a fire-breathing monster from Lycia. Homer's Iliad describes it as a lion in front, a serpent behind and a goat in the middle; later art shows a goat's head rising from its back and a snake for a tail. The hero Bellerophon killed it with the help of the winged horse Pegasus. Today 'chimera' also means any mix of different parts.
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In mythology, chimeras are typically depicted as creatures with the combined features of different animals. Did you know? The concept of the chimera has roots in ancient Greek mythology. Described by various sources, it's a fire-breathing monster with a body of a lion, the head of a goat protruding from its back, and a serpent's tail. NOW YOU KNOW!