★Ketchup was once sold as medicine in the 1830s.★Vincent van Gogh only sold one painting during his lifetime.★The Mona Lisa has no eyebrows or eyelashes.★The human brain uses about 20% of the body's total energy.★Chewing gum while you chop onions helps keep you from crying.★The smell of freshly cut grass is actually a plant distress signal.★Honey never spoils. Archaeologists found 3000-year-old honey in Egyptian tombs that was still edible.★A 'jiffy' is one trillionth of a second in physics.★A hippo's sweat is pink.★Dragonflies have been around for about 300 million years.★The oldest 'your mom' joke was discovered on a 3,500 year old Babylonian tablet.★Cashews grow on the outside of a fruit, not inside a shell.★Butterflies taste with their feet.★Starfish can regenerate their lost limbs.★A crocodile can't stick its tongue out.★The inventor of the Pringles can is buried in one.★We have mapped more of Mars than of our own ocean floor.★A shrimp's heart is located in its head.★Octopuses can taste with their arms.★Crows can recognize human faces and hold grudges for years.★Scotland's national animal is the unicorn.★The average person spends six months of their life waiting for red lights to turn green.★A rhinoceros' horn is made of keratin, the same stuff as hair.★Cherophobia is an irrational fear of fun or happiness.★The first oranges weren't orange, they were green.★A blue whale's heart is roughly the size of a small car.★Humans are the only animals that blush.★The smell of rain has a name: petrichor.★Wombat poop is cube-shaped.★Humans share 60% of their DNA with bananas.★A mosquito has 47 teeth.★An octopus has nine brains.★Cleopatra lived closer in time to the Moon landing than to the building of the Great Pyramid.★The Statue of Liberty was originally intended to be a lighthouse.★A group of frogs is called an army.★Rats laugh when tickled.★There are only two countries in the world whose names start with 'The': The Gambia and The Bahamas.★Cotton candy was co-invented by a dentist.★The first computer mouse was made of wood.★There are more than 1,000 chemicals in a cup of coffee.★A snail can sleep for three years straight.★Dolphins have names for each other.★Your tongue print is as unique as your fingerprint.★Ancient Egyptians slept on stone pillows.★Pigs can't look up at the sky without rolling over.★So far, two diseases have successfully been eradicated: smallpox and rinderpest.★The world's oldest known recipe is for beer.★The average person walks the equivalent of three times around the world in a lifetime.★The longest hiccuping spree lasted 68 years.★Ostriches can run faster than horses.★A newborn kangaroo is about the size of a jellybean.★The moon has moonquakes.★There are more possible iterations of a game of chess than atoms in the observable universe.★A newborn panda is smaller than a mouse.★Sloths only poop about once a week.★Humans blink about 15 to 20 times per minute.★The fear of long words is ironically called hippopotomonstrosesquippedaliophobia.★A day on Venus is longer than a year on Venus.★A day on Jupiter lasts only about 10 hours.★Pigeons can recognize themselves in a mirror.★The dot over the letter 'i' is called a tittle.★The 'new car smell' is made of dozens of chemicals off-gassing from the interior.★Octopuses have three hearts and blue blood.★A jiffy is an actual unit of time: 1/100th of a second.★29th May is officially Put a Pillow on Your Fridge Day.★Avocados are toxic to most animals except humans.★Antarctica is the only continent without native reptiles or snakes.★A lion's roar can be heard from up to 5 miles away.★The first item ever sold on eBay was a broken laser pointer.★Bananas are berries, but strawberries are not.★A group of crows mobbing a predator is literally called a 'murder patrol'.★A group of jellyfish is called a smack.★The microwave oven was invented by accident when a researcher noticed a chocolate bar melted in his pocket.★Sharks existed on Earth before trees did.★Cats can't taste sweetness.★Sea otters hold hands while sleeping so they don't drift apart.★There are more stars in the universe than grains of sand on every beach on Earth.★A group of flamingos is called a 'flamboyance'.★Sloths can hold their breath longer than dolphins can.★Your nose can remember 50,000 different scents.★Tigers have striped skin, not just striped fur.★Bubble wrap was originally invented as wallpaper.★A group of owls is called a parliament.★A bolt of lightning is five times hotter than the surface of the sun.★Banging your head against a wall for one hour burns 150 calories.★A hummingbird's heart can beat up to 1,260 times per minute.★More than half of all people alive today have never made a phone call.★There is a village in Norway called 'Hell' that freezes over every winter.★7% of American adults believe that chocolate milk comes from brown cows.★Most 'silver' spoons are actually made of stainless steel.★It takes about eight minutes for sunlight to reach Earth.★A day on Mercury lasts 59 Earth days.★Voice actors for Mickey and Minnie Mouse got married in real life.★Google processes more than 8.5 billion searches every single day.★There's a species of jellyfish that is immortal.★You can hear a blue whale's heartbeat from more than two miles away.★Nintendo was founded in 1889 as a playing card company.★Snakes can help predict earthquakes.★Sea cucumbers breathe through their butts.★A group of porcupines is called a prickle.★Bananas are curved because they grow towards the sun.★A group of ferrets is called a business.★Goldfish can recognize human faces.★The Great Wall of China is not visible from space with the naked eye.★The French language has 13 different words for 'kiss'.★Dolphins sleep with one eye open.★Koalas have fingerprints nearly identical to humans.★The shortest commercial flight in the world lasts just 57 seconds.★Cows have best friends and get stressed when separated.★Peanuts aren't nuts, they are legumes.★It is physically impossible to hum while holding your nose.★Cows have regional accents, they moo differently in different areas.★A 'moment' was medieval unit of time equal to 90 seconds.★Barbie's full name is Barbara Millicent Roberts.★The shortest war in history lasted 38 to 45 minutes between Britain and Zanzibar.★A group of pandas is called an embarrassment.★The Dutch were once the tallest people in the world.★Hippos can't actually swim, they walk along the riverbed.★The longest recorded flight of a chicken lasted 13 seconds.★The Eiffel Tower can grow up to 6 inches taller during summer.★Saturn would float if you could find an ocean big enough.★Polar bears have black skin under their white fur.★If you lift a kangaroo's tail off the ground it can't hop.★Pineapples take about two years to grow.★Your stomach gets a new lining every 3 to 4 days, otherwise it would digest itself.★A blue whale's tongue can weigh as much as an elephant.★A snail can have up to 25,000 teeth on its tongue.★A cloud can weigh more than a million pounds.★Horses physically cannot vomit.★Bees can recognize individual human faces.★The Hawaiian alphabet has only 13 letters.★Pteronophobia is the fear of being tickled by feathers.★In Switzerland it is illegal to own just one guinea pig.★A flock of crows is known as a murder.★Hot water freezes faster than cold water. This is called the Mpemba effect.★Elephants are the only mammals that can't jump.