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Many early fish and invertebrates had 4 eyes, and 2 became the pineal gland

Extraordinary fossils from China's Kunming region, dating back about 518 million years, confirm that the earliest jawless fish (like Myllokunmingids) actually possessed four functional, camera-type eyes.

This research reveals that the upper pair of these ancient eyes shrank over time and evolved into the pineal gland. The discovery of these ancient four-eyed ancestors highlights exactly why the human brain contains this deep, light-sensitive remnant.

Under high-powered microscopy, the central pair of eyes on these ancient vertebrates revealed preserved lenses and light-absorbing pigment granules (melanosomes), indicating they tracked movement and navigated prehistoric waters.

As early vertebrates evolved bigger brains and more complex vision, the need for a secondary pair of visual eyes diminished. The centrally located upper eyes shrank and migrated deep into the skull.

While mammals eventually lost the pineal gland's light-detecting abilities, the gland still produces melatonin and dictates our biological clock. In some modern reptiles and amphibians, this remnant structure still operates as a light-sensing "third eye".

The Tuatara from New Zealand retains a prominent parietal eye on top of its head, complete with a small lens and retina. Many lizard and frog species still feature a "frontal dot" or "epiphysial eye" that senses solar radiation and regulates body temperature. Lampreys still possess both a functional pineal and parapineal eye on top of their brains.

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Mushroom causes hyper-realistic visions of little people

The mushroom that causes hyper-realistic visions of little people is Lanmaoa asiatica, a wild, reddish bolete fungus colloquially known in Yunnan, China as jian shou qing (meaning "see hand blue" because it bruises blue when touched).

When eaten raw or undercooked, Lanmaoa asiatica induces a highly specific psychiatric phenomenon known clinically as Lilliputian hallucinations. Unlike standard psychedelics that cause abstract geometric shapes or highly variable trips, this mushroom produces remarkably consistent, three-dimensional, hyper-realistic visions across different individuals and cultures.

Over 90% of affected individuals report seeing hundreds or thousands of tiny, 2-centimetre-tall humanoids, elves, gnomes, or clowns wearing brightly coloured clothes. These "xiao ren ren" (little people) are perceived as fully grounded in the physical environment. Visionaries report seeing them marching across tables, climbing furniture, or jumping off spoons into bowls of soup.

The effects typically take 12 to 24 hours to onset and can last for one to three days, often requiring hospital observation. The mushroom is incredibly popular as a local culinary delicacy in southwest China's Yunnan Province and is also found in the Philippines.

Because it is delicious when prepared properly, locals do not consume it recreationally; the hallucinations are purely an accidental side-effect of undercooking it (cooking it for over 15 minutes destroys the toxin).

Genome sequencing led by mycologists at the University of Utah revealed a baffling twist: Lanmaoa asiatica contains no known psychedelic compounds. It completely lacks the genetic pathways to produce psilocybin (found in magic mushrooms) or ibotenic acid (found in Amanita muscaria).

As a result, scientists are actively racing to isolate a completely undiscovered chemical compound within the fungus, hoping it will unlock new insights into how the human brain processes visual perception.

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Despite suffering from cancer, Raul Julia played M. Bison for his children

Raúl Juliá wanted to star in a film that his children could actively enjoy and look forward to, choosing to give them a memorable, larger-than-life experience before his health completely deteriorated.

Juliá’s young sons, Raúl Sigmund and Benjamín Rafael, were incredibly passionate about the original Capcom arcade games. Knowing his battle with terminal stomach cancer was reaching its final stages, Juliá intentionally took on the physically demanding role of General M. Bison.

His family accompanied him to the set in Australia, allowing his kids to watch the movie being filmed and share the experience with him. He tragically passed away on October 24, 1994, just two months before the movie hit theatres.

Despite being visibly gaunt and in severe pain during production, Juliá completely threw himself into the character. He famously approached the dictator with a theatrical, Shakespearean grandeur inspired by Richard III.

While critics and fans largely panned the live-action Street Fighter (1994) adaptation for its campy tone, Juliá’s performance was universally praised as the absolute highlight of the entire movie.

Decades later, his delivery of the iconic line, "For you, the day Bison graced your village was the most important day of your life. But for me, it was Tuesday", remains a legendary piece of cinematic history.

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The world's first communications satellite was Echo 1

Echo 1 was launched by NASA on August 12, 1960, and served as the world's first passive communications satellite.

It was constructed from a micro-thin, aluminized Mylar polyester film. It had no onboard computers or transmitters; it acted as a giant mirror in the sky to bounce signals.

Its historic first transmission was a prerecorded message by President Dwight D. Eisenhower, beamed from Goldstone, California, to Holmdel, New Jersey.

Because of its highly reflective 100-foot surface, it was easily visible to the naked eye from Earth, appearing as a bright moving star. The satellite successfully proved that global, space-based communication was possible, paving the way for the active, transponder-based satellites (like Telstar) that we rely on today.

The most famous scientific byproduct of Project Echo came from its ground infrastructure. Bell Labs constructed a massive, ultra-sensitive horn antenna in Holmdel, New Jersey, specifically to catch the faint radio signals bouncing off Echo 1.

Years later, researchers Arno Penzias and Robert Wilson used this exact antenna to isolate an unexplained background hiss. That noise turned out to be the Cosmic Microwave Background Radiation, the literal relic radiation from the Big Bang, earning them the 1978 Nobel Prize in Physics.

Because Echo 1 and Echo 2 were massive but incredibly lightweight, they were highly sensitive to external environmental forces in space. Scientists tracked their orbits precisely to calculate the upper atmospheric density and solar radiation pressure.

The satellites provided the first definitive data on how the physical pressure of sunlight (photons) alters the orbit of large spacecraft over time.

Before the mid-20th century, mapping distances between continents across oceans was highly inaccurate. Because Echo 1 was highly reflective and easily visible worldwide, scientists used it as a triangulation point. By photographing the satellite simultaneously from different continents against the backdrop of the stars, geometricians mapped the exact shape of the Earth (geodesy) and corrected global coordinates.

During the height of the Cold War, Echo 2 served as the platform for the first joint space experiment between the United States and the Soviet Union. In 1964, radar and radio signals were bounced off Echo 2 from the Jodrell Bank Observatory in England to the Zimenki Observatory in Russia, proving that peaceful scientific collaboration in orbit was possible.

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Denny, the only known first generation human hybrid

Denny (Denisova 11) is a first-generation hominin hybrid, born to a Neanderthal mother and a Denisovan father.

Her genetic identity was revealed in a 2018 Nature study led by paleogeneticists Viviane Slon and Svante Pääbo at the Max Planck Institute for Evolutionary Anthropology.

Found in the Denisova Cave located in Siberia's Altai Mountains, it was discovered in 2012 as a single, unidentifiable 2.5-centimetre bone fragment. It was sifted from 2,000 animal bones in 2016 using collagen fingerprinting. Genetic testing proved she was female, around age 13 about 90,000 years ago.

Her nuclear DNA showed a near equal distribution of chromosomes from both species. Inherited from the mother, her mitochondrial DNA was entirely Neanderthal. Her Denisovan father's genome also showed traces of Neanderthal ancestry from hundreds of generations prior.

Her mother was genetically closer to western European Neanderthals from Croatia than earlier cave inhabitants, proving massive prehistoric migrations.

Denny is direct, individual-level proof that different human groups often interbred. This shows that mixing was a normal aspect of early human history.

Most non-African populations carry 1% to 2% Neanderthal DNA, while certain Asian and Oceanian populations carry up to 4% to 6% Denisovan DNA.

Archaic human DNA provided an evolutionary shortcut, allowing migrating humans to adapt to harsh new climates and local pathogens.

Modern Tibetans can thrive at elevations over 4,000 meters due to a variant of the EPAS1 gene inherited from Denisovans.

Standard human DNA thickens blood at high altitudes to carry more oxygen, increasing stroke risk. The Denisovan variant regulates hemoglobin production to allow efficient oxygen use without blood thickening.

Interbreeding introgressed Toll-Like Receptor (TLR) genes help the immune system to recognize and attack foreign bacteria, fungi, and parasites, protecting early ancestors from regional Eurasian diseases.

Certain Neanderthal variants modify skin pigmentation and hair texture, helping early humans synthesize Vitamin D in low-light environments. Another Neanderthal gene increases nasal height, which warms and humidifies freezing air before it enters the lungs.

Traits that helped hunter-gatherers survive famine, cold, and immediate injuries now clash with modern sedentary lifestyles, hyper-sterile environments, and longer lifespans.

Neanderthal gene increases the risk of Type 2 Diabetes and alters how the body processes and stores fats.

Overactive immune traits that once fought off ancient parasites now cause the body to attack itself, driving up rates of Crohn's disease, Lupus, and severe allergies.

Rapid blood clotting prevented ancestral cave-dwellers from bleeding to death from wounds, it now raises modern risks for strokes and deep vein thrombosis.

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The ancient skyscrapers of Shiban in Yemen soar up to 11 stories

The ancient skyscraper city of Shibam/Shiban in Yemen is recognized as the oldest metropolis in the world to use vertical construction.

Nicknamed the "Manhattan of the Desert" by British explorer Freya Stark in the 1930s, the architectural marvel is located in the Hadhramaut Governorate. It features roughly 500 mud-brick high-rises soaring up to 11 stories (about 30 to 40 metres), built without steel or concrete.

Shibam is the first urban plan on Earth based entirely on the principle of vertical construction. The city is built on a tight rectangular grid enclosed by a fortified defensive wall.

The buildings were packed tightly together and built upwards to maximize space, preserve surrounding agricultural land, and protect the 7,000 residents from rival Bedouin tribe raids. The towers are constructed out of sun-dried mud bricks, a mixture of local soil, water, and straw. The walls are over one metre thick at the base and taper as they rise to reduce overall weight.

The windowless lower floors were for grain storage and livestock. The second floor was for male socialising, while the higher levels housed women and family. Some roofs are connected by overhead bridges, allowing residents to go between homes during attacks.

The dense layout keeps the narrow alleys shaded throughout the day, while the high thermal mass of the mud bricks neutralises the punishing 40°C desert heat. White-painted roofs coated in traditional lime plaster ('Noora') further reflect sunlight.

While the site traces back nearly 2,000 years to the pre-Islamic Hadhramaut Kingdom, a catastrophic flood in 1532 destroyed much of the original settlement. Most of the towers you see today date back to the 16th century.

When the town was revitalized starting in 1533, the community implemented a strict, rigid grid layout to pack roughly 500 tall tower blocks together within a protective ring wall.

While stories weren't tacked onto existing roofs, the buildings have undergone hundreds of total or partial reconstructions over the last few centuries.

Because the desert weather and seasonal rain continuously erode the adobe bricks, towers occasionally collapse or degrade. When this happens, the building is cleared down to its stone foundation and rebuilt back to its original multi-storey height using the exact same traditional dimensions.

Because mud is highly vulnerable to wind and rain erosion, the buildings require continuous maintenance. Residents regularly reapply fresh coats of protective mud sealant to the facades, giving rise to one of the world's oldest traditional high-rise scaffolding cultures.

In recognition of its outstanding universal value, the Old Walled City of Shibam was designated a UNESCO World Heritage Site in 1982.

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The Oklo natural nuclear reactors, where nuclear fission occurred naturally

The Oklo natural nuclear reactors in Gabon represent the only known location on Earth where self-sustaining nuclear fission occurred naturally.

Discovered in 1972 by French scientists, this geological marvel consists of 16 separate zones where natural nuclear chain reactions operated intermittently for hundreds of thousands of years approximately 1.7 to 2 billion years ago.

Modern nuclear power plants require highly precise engineering, enriched fuel, and artificial control mechanisms. Two billion years ago, the Earth's environment fulfilled these exact conditions naturally.

Today, natural uranium contains only about 0.72% of the fissile isotope Uranium-235. Because 235U decays much faster than 238U, its concentration 2 billion years ago was naturally around 3% to 4%. This matches the enrichment level used in modern commercial nuclear reactors.

The rise of early photosynthetic life generated an oxygen-rich atmosphere. This allowed underground water to dissolve and transport uranium, concentrating it into exceptionally rich, dense ore veins capable of reaching critical mass.

For a nuclear chain reaction to sustain itself, fast-moving neutrons must be slowed down to trigger further fission. Regular flooding filled the porous sandstone ore with groundwater, which acted as a natural neutron moderator to ignite the reaction.

The Oklo reactors were perfectly self-regulating and ran on an automated cycle driven by thermodynamics. This geyser-like cycle typically ran for 30 minutes of active fission followed by 2.5 hours of cooling down. The entire system operated safely without ever triggering a meltdown or explosion.

The Oklo reactor zones generated a modest average thermal output of roughly 100 kilowatts per zone, accumulating an estimated 15,000 megawatt-years of energy before the 235U fuel depleted and the reactors went permanently dormant.

The toxic, radioactive byproducts of fission (such as plutonium and neodymium) remained completely trapped and immobilized within the local rock matrix for 2 billion years. This provides an invaluable blueprint for the design of modern deep geological repositories for nuclear waste.

Analysis of the specific isotopes left behind proves that the fundamental laws of physics and the fine-structure constant have remained entirely unchanged over billions of years.

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You've been Thunderstruck

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Dog's reaction to seeing the owner return from vacation

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Chinese guy explains how magic tricks work

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Sam Neill's dream RIP

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Officer rescues a trapped dog and gets a hug

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Look at those adoring eyes

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Dutch tourists vanished while hiking the El Pianista trail in Panama

Kris Kremers (21) and Lisanne Froon (22) were Dutch students who vanished on April 1, 2014, while hiking the El Pianista trail in Panama. The local government ruled it an accidental misadventure.

Photos from their camera show them enjoying the summit. But then, they crossed the Continental Divide and into the jungle. They failed to return that evening, sparking a massive search.

Ten weeks later, Lisanne's backpack washed up on a riverbank. Inside, their bras, sunglasses, cash, passport, camera, and phones were intact and dry.

Forensics revealed that hours after reaching the summit, the first emergency call was placed. Over the next few days, more attempts were made, but there was no reception.

On April 5, Kris's phone was turned off. When it was turned back on in subsequent days, multiple incorrect PINs were entered, meaning someone forgot the PIN or someone else was trying to access it.

On April 8, between 1 to 4 AM, the camera was used to take 90 flash photographs in darkness. Most were images of foliage, steep rock faces, and a makeshift trail marker made of toilet paper and plastic wrappers. One photo showed the back of Kris’s head, with what some believe to be blood near her temple.

Photo #509, which sat between the day and night photos, was deleted. Forensic teams noted it was erased in a manner that usually requires a computer.

Search continued on the Rio Culebra (Snake River). In the following months, teams found 33 widely scattered bone fragments, a partial pelvis, and a foot in a hiking boot.

DNA confirmed that they belonged to the girls. Lisanne’s foot and leg bones had flesh in early stages of decomposition. Kris’s pelvis bone was stark white and completely bleached.

Forensic experts argued that the environment could not have bleached the bone so quickly, giving weight to theories that a chemical was used to speed up decomposition.

Other experts argue that the environment, sun exposure in open river canopies, or acidic water can cause uneven decay. Proponents argue that the girls likely veered off-trail and one or both suffered a severe injury from a fall.

They probably used the camera flash to light up the dark and eventually fell to dehydration, starvation, or exposure, and flash floods scattered their remains.

Skeptics point out the deleted photo, the pristine condition of the backpack weeks after being in a wet jungle, and the bleached bones. Several mysterious deaths of locals, including the taxi driver who dropped the girls off at the trail, have led some to believe a third party ambushed, held captive, and murdered the women.

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A narwhal tusk is actually an elongated tooth that pierces through the lip

The iconic "horn" of the narwhal is not a horn at all; it is an inside-out, left canine tooth that grows up to 3 metres long and protrudes directly through the upper lip.

The left canine grows straight forward through the lip, while the right canine typically remains small and embedded inside the skull. The tusk always spirals in a counterclockwise direction. This helical pattern is believed to help the tooth grow straight and reduce drag while swimming.

Unlike normal human teeth, the tusk is soft on the outside and harder on the inside. It is packed with up to 10 million nerve endings that allow the whale to sense changes in water temperature, pressure, and salinity.

This trait is most prominent in males. Only about 15% of females ever grow a tusk. In very rare cases (about 1 in 500 males), the right canine tooth will also erupt, causing the narwhal to grow two parallel tusks.

Drone footage has shown that narwhals use their flexible tusks to quickly tap and stun fish before swallowing them whole.

Ancestral toothed whales originally had full sets of teeth for grasping prey. As narwhal ancestors adapted to suction feeding in deep Arctic waters, they gradually lost almost all functional teeth.

Instead of disappearing entirely, the two upper canine teeth remained. Genetic and hormonal shifts eventually caused the left canine in males to elongate and erupt forward. Unlike most animal tusks, the narwhal tusk does not emerge from the open mouth. It evolved to pierce directly through the flesh of the upper lip, a trait unique to this species.

The tusk likely evolved primarily as a secondary sexual characteristic, similar to a lion's mane or a peacock's feathers. Males with larger tusks are preferred by females, signaling good health and genetic strength.

Because the Arctic is covered in thick ice, the tusk's highly sensitive nerve network evolved to help the whales find open breathing holes and navigate freezing, changing waters.

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This statue depicts Saint Bartholomew who was allegedly skinned alive

"Saint Bartholomew Flayed" is a famous Renaissance-era marble sculpture by Marco d'Agrate created in 1562. It is displayed in the Duomo di Milano (Milan Cathedral) in Italy.

At a quick glance, the saint appears to be holding a draped fabric cloak or stole over his shoulders. Upon closer inspection, the folds of cloth are actually his own peeled, dissected skin. The sculpture reveals extraordinary scientific detail, exposing every underlying muscle, vein, tendon, and bone structure. This reflects the Renaissance era's deep fascination with human dissection and anatomical accuracy.

Instead of showing the agony of execution, the artist portrayed Bartholomew standing with calm endurance and resilience. At the base of the statue, a Latin inscription translates to: "Praxiteles did not sculpt me, but Marco d'Agrate did". This was a proud claim by the sculptor that his work rivaled the legendary ancient Greek master Praxiteles.

According to Christian tradition, Bartholomew was one of Jesus' twelve apostles. He was martyred by being flayed alive and beheaded at the command of the regional king.

However, this is not considered historically accurate by scholars. The story relies entirely on pious tradition and hagiography (biographies of saints) that emerged centuries after his death.

The New Testament mentions Bartholomew only in lists of the twelve apostles, providing zero details about his life or death. Early Christian writers and legends wildly contradict each other. Different accounts claim he was beaten unconscious and cast into the sea, crucified upside down like St. Peter, or simply beheaded.

The standard hagiographical tale claims he was flayed by order of Prince Astyages for converting the Armenian King Polymius. However, historical records of the Armenian Arsacid dynasty show no evidence that a king named Polymius ever existed.

Legends place his martyrdom in entirely different parts of the ancient world, ranging from Greater Armenia (modern-day Turkey/Armenia) to India, Ethiopia, or Southern Arabia.

The gruesome image of Bartholomew grew in popularity during the Middle Ages, popularized by texts like the 13th-century Golden Legend. This imagery became a favorite subject for Renaissance artists, who used the skinless motif to showcase their mastery of human anatomy and dissection.

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Puppy understood the assignment