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11,491 facts. Click any fact to see its full page.
All 11,491
📜 History 1,991
🔬 Science 1,964
🐾 Animals 1,525
🚀 Space 977
🧠 Psychology 893
🌿 Nature 759
💻 Technology 735
🌍 Geography 599
🎭 Culture 581
🫀 Human Body 572
🌊 Ocean 373
💬 Language 245
🍕 Food 199
✨ General 68
✨ Dinosaur 10
Wombat feces are cube-shaped — their digestive system is the only known biological process that produces cube-shaped material.
The average human body contains enough carbon to make 900 pencils.
Some octopuses are so flexible they can fit through any opening larger than their beak.
Rubber ducks accidentally became global ocean research tools when 29,000 of them spilled into the Pacific in 1992.
The hashtag symbol '#' is officially called an octothorpe.
The smell of rain on dry earth is called petrichor — it's caused by a compound called geosmin released by bacteria.
Dolphins have been observed surfing ocean waves purely for fun — one of the clearest signs of play in non-human animals.
The city of Rome was built on seven hills — today it sprawls across 15 hills.
Elephants are the only animals that cannot jump — their bone structure doesn't support the motion.
The fingerprints of a koala are so similar to human fingerprints that they have been confused in crime scene investigations.
Canned food was invented before the can opener — for 50 years, cans had to be opened with a hammer and chisel.
The average person produces enough saliva in their lifetime to fill two swimming pools.
It would take about 1.2 million mosquitoes biting simultaneously to drain the average human of blood.
The loudest animal relative to its size is the water boatman insect, which makes sounds at 99.2 dB using its genitals.
The blue whale's heartbeat can be heard from two miles away.
Oxford University predates the Aztec Empire — it was teaching students before Tenochtitlan was founded.
A pound of spider silk, if it could be gathered, would stretch around the entire Earth.
The word 'freelance' comes from medieval mercenaries who offered their lances ('free lances') for hire.
The first product to have a barcode scanned commercially was a pack of Wrigley's chewing gum in 1974.
There are more possible iterations of a game of chess than atoms in the observable universe.
The average cloud weighs about 500,000 kg — but the water droplets are so spread out the cloud floats.
A group of flamingos is called a flamboyance; a group of rhinos is a crash; a group of owls is a parliament.
The inventor of the Pringles can, Fredric Baur, had his ashes buried in one after he died.
A bolt of lightning contains enough energy to toast 100,000 slices of bread.
The tongue is the only muscle in the human body attached at only one end.
The fear of the number 13 is called triskaidekaphobia — many buildings skip the 13th floor entirely.
Crows can recognize human faces and remember people who have wronged them — then pass this knowledge to offspring.
The first alarm clock could only ring at 4 AM — made in 1787 for a clockmaker who needed to wake up early.
The word 'lethologica' describes the inability to remember the word you want.
A day on Mercury lasts longer than a year on Mercury — one rotation takes 59 Earth days, but its orbit only 88.
The average person walks about 100,000 miles in their lifetime — equivalent to walking around Earth four times.
If you removed all the empty space in atoms, all of humanity could fit in a cube the size of a sugar cube.
It is physically impossible to hum while holding your nose closed.
The longest hiccuping episode on record lasted 68 years — Charles Osborne hiccupped from 1922 to 1990.
The color red appears to make food taste sweeter — this is why ketchup and many candy wrappers are red.
Humans share 60% of their DNA with bananas, 85% with mice, and 99% with chimpanzees.
Cleopatra lived closer in time to the Moon landing than to the construction of the Great Pyramid.
The sentence 'The quick brown fox jumps over the lazy dog' contains every letter of the English alphabet.
A group of cats is called a clowder, a group of kittens a kindle.
The speed of a sneeze can reach 160 km/h, and droplets can travel up to 8 meters.
Honey found in Egyptian tombs 3,000 years old is still edible — honey's low moisture and acidic pH prevent bacterial growth.
The Mariana Trench was first described in detail after HMS Challenger's survey voyage of 1872–1876.
Sir Francis Drake completed the second circumnavigation of the globe in 1580 — nearly 60 years after Magellan's crew.
The Rosetta spacecraft became the first to orbit a comet and land a probe on its surface in 2014.
The electron microscope, invented in 1931, revealed biological structures too small to see with light microscopes.
The discovery of penicillin by Alexander Fleming in 1928 was entirely accidental — mold contaminated a petri dish.
The mapping of the human genome was completed in 2003 after 13 years of international scientific collaboration.
The first satellite image of Earth was taken in 1959 — it revealed for the first time the planet's cloud patterns from space.
The SETI (Search for Extraterrestrial Intelligence) project has been scanning the skies for alien signals since 1960.
Exploration of the deep sea has revealed that bioluminescence is far more common than previously thought — it may be the dominant form of communication in the ocean's depths.