125 Facts That Will Make You Feel Instantly Smarter

These bits of trivia will make you feel and sound more intelligent in a flash.

Learning new things is one of the best ways to sharpen your mind and expand your horizons—but let's face it, that's not something most of us do regularly once we're out of school. Sure, we occasionally pick up interesting tidbits here and there, whether while watching Jeopardy! or listening to a well-researched podcast. But when was the last time you really sat down and took in new information? If you're long overdue, perhaps you'll be interested in these 125 facts we put together that will instantly make you feel smarter—or at the very least give you great conversation starters at your next dinner party.

No matter what your interests are, we've got you covered: These facts run the gamut from history to science, animals to food, astronomy to pop culture. We guarantee you'll learn something you don't know already, and then some. Ready to boost your knowledge? Read on.

RELATED: 67 Weird Facts So Strange, You Won't Believe They're True.

1
Monkeys shouldn't eat bananas.

Capuchin monkey
Shutterstock

If you happen to be around a monkey, you might be inclined to feed it a banana. But the fact is, bananas contain far too much sugar for monkeys to handle.

"Giving this fruit to animals is equivalent to giving them cake and chocolate," according to Amy Plowman, head of conservation and advocacy at the Paignton Zoo in Devon, U.K. "Compared to the food they would eat in the wild, bananas … have lots of calories and contain much more sugar that's bad for their teeth and can lead to diabetes and similar conditions. It can also cause gastrointestinal problems as their stomachs are mostly adapted to eating fibrous foods with very low digestibility."

RELATED: 81 Weird Animal Facts Everyone Should Know.

2
There are more card deck combinations than there are atoms on Earth.

teenage kids playing a round of cards
iStock

Don't blame your bad hand at the poker table on a stroke of bad luck; it's really just a matter of math, seeing as there are more ways to arrange a deck of cards than there are total atoms on Earth!

If a card deck is shuffled properly, there's a pretty high chance that it comes out in an arrangement that has never existed before, because a deck of 52 cards has an astronomically large number of permutations. (Put simply: It's a 69-digit number!)

3
More than half of Shakespeare's characters die in the same way.

outdoor statue of william shakespeare
iStock

William Shakespeare had a flair for the dramatic, but he also relied on some tried and true tropes, including the ways he killed off his characters. When The Guardian broke down data from Open Source Shakespeare in 2016, they found that the majority of fatalities (54 out of the 100 deaths in all of his plays) are due to stabbings.

The second most common cause of death was being poisoned, although just four characters meet their maker this way.

4
All of the water on Earth would form a ball that's 860 miles wide.

bottom of the ocean National Geographic bee questions
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About 71 percent of the surface of the Earth is covered with water. However, it's hard to fully grasp just how much water that actually is. Thankfully, NASA put it in perspective. They explain that if we were somehow able to take all of the water on the planet and bring it together, it would form a massive 860-mile wide ball.

For comparison, the Earth itself is 7,917.5 miles in diameter.

5
The New York Times ran a typo every day for more than 100 years.

New York Times {best of 2018}
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Everyone makes mistakes. But you wouldn't think that one of the largest newspapers in the United States would run a typo on its front page every day for more than 100 years. However, that's exactly what occurred when an employee of The New York Times accidentally entered the wrong serial number of an edition that went out back in 1898.

Seeing that they were at issue 14,499, the editor on duty kicked it up by what they thought was one number for the next day. But instead of deeming it issue 14,500, they went up 500 editions into the future to 15,000. As a result, each issue was misnumbered from 1898 until 1999, when a news assistant finally caught the mistake!

RELATED: 54 Hilarious and Random Facts You'll Want to Tell Your Friends.

6
Two asteroids orbit the Earth just like the Moon.

Asteroid hitting Earth 2018 predictions
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When you look at the night sky and see the Moon shining down, you might not have realized that it's not alone up there. Other than the lunar body, there are two asteroids that orbit close to our planet.

One asteroid, Cruithne, follows the Earth's orbit, while Asteroid 2002 AA29 travels along a path that is shaped like a horseshoe. Because of this, it only swings by us every 95 years.

7
There are polka-dotted zebras.

polka dot zebra
Shutterstock

Zebras are known for their striking black and white stripes, but it turns out that not all of the creatures are born with a lovely lined pattern. In fact, some rare zebras are born with spots, such as the polka-dotted baby zebra (seen above) that was spotted in Kenya's Masai Mara National Reserve in 2019.

Named Tira, the foal has a coat that is primarily dark but has white dots, a coloring thought to be due to a genetic mutation called pseudomelanism. Although the little one looks quite a bit different from the rest of his family, he seems to be fitting in just fine.

8
Babies don't blink nearly as much as adults.

Portrait of an adorable baby boy laying on the bed at home
iStock

Humans blink in order to keep our eyes clean and moisturized. However, it turns out that some of us blink much more than others. Specifically, adults tend to blink around 15 times per minute while babies only blink an average of two or three times in the same time span.

9
There's a bird that has "evolved" back into existence twice.

Aldabra white-throated rail walks on ground
Shutterstock

The Aldabra white-throated rail may not be a very well known bird, but it's certainly a remarkable one. The flightless creature first found itself in trouble around 136,000 years ago when it went extinct—something it's done twice.

However, a 2019 study published in the Zoological Journal of the Linnean Society explained that "the rail is an example of a rarely observed phenomenon called iterative evolution, in which the same ancestral lineage produces parallel offshoot species at different points in time."

Because of this, it's been able to rally and "evolve" back into existence both times it was essentially wiped out.

10
There's only one continent without grasslands.

Tourist taking photos of amazing frozen landscape in Antarctica with icebergs, snow, mountains and glaciers, beautiful nature in Antarctic Peninsula with ice (Tourist taking photos of amazing frozen landscape in Antarctica with icebergs, snow, mountai
iStock

Antarctica is an amazing place that boasts incredible frosty landscapes, unbelievably low temperatures, and volcanic activity. It's also the windiest and driest place on Earth, according to National Geographic.

Another thing that sets it apart? It's the only continent on Earth that can't naturally support grasslands.

RELATED: 55 Fascinating World Facts You Need to Know.

11
The oldest surviving banknotes are from 1375.

Movemember has raised hundreds of millions around the world.
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Trading goods and services for currency is a system that has existed around the world for thousands of years. However, the oldest surviving banknotes are the Da Ming Tongxing Baochao (Great Ming Circulating Treasure Note) from China, which were initially printed between 1368 and 1398.

When the value of the money crashed, the banknotes were simply stashed away and forgotten, which is how some managed to survive, according to Guinness World Records.

12
Human corpses can continue to move for more than a year after death.

A closeup of flowers atop a funeral casket outdoors, things you should never lie to kids about
Shutterstock

The thought of a body moving after a person has died sounds like something out of a horror movie, but it may just be a natural phenomenon. According to a 2019 study published in the journal Forensic Science International: Synergy and led by Australian researcher Alyson Wilson, corpses can continue to move for more than a year after death.

"What we found was that the arms were significantly moving, so that arms that started off down beside the body ended up out to the side of the body," she told Australia's ABC News. "One arm went out and then came back in to nearly touching the side of the body again."

The movement is believed to be the result of the decomposition process which causes the corpses' ligaments to dry out and contract, pulling the limbs as they do.

13
Eggshells are being used to grow new human bones.

cracked eggs on a table, weird state records
Shutterstock

Chicken eggshells are mostly made up of calcium carbonate, a substance that also exists in human bones. That's why researchers at the University of Massachusetts Lowell (UML) believe that eggs are ideal for growing new bone for humans who have suffered injuries to their own skeleton.

"There is a great need for developing new and functional materials to repair and regenerate damaged bone," Gulden Camci-Unal, a professor of chemical engineering at UML who led the research, told Smithsonian magazine in 2019. "At our lab, we like to take unconventional approaches; we look at nature and try to see what we can use that already exists."

14
The furry tufts of hair inside a cat's ear are called ear furnishings.

iStock

The next time you're playing with an adorably fuzzy feline, you might want to notice those fluffy bits of fur that stick out of the cat's ears, which have a super cute name: ear furnishings.

RELATED: 29 Fun Cat Facts You Never Knew About Your Furry Friend.

15
A wind storm in Australia nearly interrupted the moon landing broadcast.

moon landing
Castleski/Shutterstock

When NASA's Apollo 11 landed on the moon, it was a historic moment for all of humanity, broadcast internationally. But it was also nearly interrupted by a wind storm that blew through Australia. That's where the Parkes dish, which would receive the broadcast signals from the moon, was located.

When a wind storm with 60 mph winds slammed right into the dish, the crew on the ground kept their cool and a delay meant that the storm had time to pass over before the critical signals were finally sent around the world.

According to Smithsonian magazine, "Those TV images would never have reached the world's living rooms without the help of a crack team of Australian scientists and engineers, working in the bush a few hundred miles west of Sydney."

16
There's a chapel in Spain that's inside of a volcano.

santa margarida chapel
Shutterstock

If you want to visit the Santa Margarida de Sacot chapel, you won't just have to head to northeastern Spain—you'll also have to trek down into a crater that sits inside of a 2,238-foot volcano.

The original structure was built during the Middle Ages and unfortunately came down in an earthquake. However, the site is still home to a tiny Romanesque-style stone building that features a single nave and a steeple bell.

17
Unlike most snakes, anacondas give birth to live babies as opposed to eggs.

snake eggs
surin2514 / Shutterstock

Anacondas aren't like the typical snake for plenty of reasons, including the fact that they can grow up to 30 feet in length and can weigh up to 550 pounds.

Another noteworthy difference? Unlike most other kinds of snakes, anacondas don't lay eggs but instead deliver live babies. They birth up to 40 snakes at a time, each around 2 feet long.

18
Nettle pudding is one of the oldest recipes in the world and goes back 8,000 years.

nettle pudding, smarter facts
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If you like to tackle old-school recipes, then how about trying one of the oldest known recipes in the world? Researchers at the University of Wales Institute tested an ancient recipe for nettle pudding, which dates back around 8,000 years.

Although nettles are something your parents may have warned you to stay away from as a child, according to researcher Ruth Fairchild, when the plant is cooked with ground-down barley and water, "the sting goes out of it."

19
Violet Jessop survived three of the largest ship disasters in history.

titanic historical photo, amazing coincidences
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Violet Jessop may be one of the luckiest or unluckiest women in history, depending on how you look at it. The ocean liner stewardess not only survived the sinking of the Titanic in 1912, but was also present during the Olympic ship collision in 1911, and onboard during the sinking of the Britannic in 1916 (Olympic and Britannic were Titanic's sister ships).

Miraculously, none of the disasters could take Jessop down. She lived to be 83, passing away in 1971.

20
The word "friends" is said in every episode of the show Friends.

Cast of Friends
PictureLux/The Hollywood Archive/Alamy Stock Photo

Thanks to modern streaming services, you can watch an episode (or five) of Friends whenever you'd like. And if you're observant, you might notice that the word "friends" is said in every single one of the 236 episodes of the show, according to Cosmopolitan.

21
In Northwest Territories, Canada, some car license plates are shaped like a polar bear.

canada license plate
Shutterstock

Take a trip up to Northwest Territories, Canada, and you'll notice something about the cars that any nature-lover would appreciate: The territory has license plates that are shaped like polar bears.

And while the government considered a new design years ago, the animal-inspired plates can still be spotted on vehicles traveling around the country.

22
Grave robbers once stole Charlie Chaplin's body.

Charlie Chaplin
United Artists via IMDB

Charlie Chaplin may have become famous for making people laugh, but what happened to his body after the performer's death is downright creepy.

Following Chaplin's passing on Christmas Day in 1977, his remains were laid to rest in a cemetery in the Swiss village of Corsier-sur-Vevey, which lies in the hills above Lake Geneva. However, just a few months later, on March 2, 1978, two men stole the body and contacted Chaplin's widow, Oona, to demand $600,000 for the return of the corpse while also threatening her children.

A police investigation resulted in the arrest and conviction of the robbers and the recovery of the body, which was later reburied in a concrete grave.

23
Crows can recognize individual human faces and hold grudges.

crow animal bird
Shutterstock

It's probably best not to get on a crow's bad side. According to one 2008 study by wildlife researchers at the University of Washington—plus tons of anecdotal evidence from wildlife biologists—the highly intelligent birds are capable of remembering individual human faces, even if those who have wronged them wear a disguise.

So, how do crows show their distaste? They scream.

"The birds were really raucous, screaming persistently," one volunteer in the crow study told The New York Times. "And it was clear they weren't upset about something in general. They were upset with me." Sounds intense!

24
Readers are more likely to agree with an essay if it's printed in Baskerville font.

alphabet baskerville font, smarter facts
Wikimedia Commons/James Puckett

Some fonts are pleasing to the eye, while others irk readers for one reason or another (looking at you, Comic Sans). But it turns out that the fonts we like (and don't like) influence us more than we may know.

In an experiment for The New York Times, readers who were shown an essay in Baskerville were more likely to agree with the argument than if it was presented in any other font. Readers were least likely to agree with statements made in fonts like Helvetica and—you guessed it—Comic Sans.

25
Lungs are the only human organ that can float on water.

chest pain
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Every day, the average human breathes around 22,000 times. According to the Lung Foundation of Australia, no matter how hard a person exhales, their lungs will still have about one liter of air lingering inside, which makes the organ buoyant enough to float on water.

No other organ in the human body has the same ability.

RELATED: 37 Weird Facts About the Human Body That Will Blow Your Mind.

26
Ancient Pompeii had take-out restaurants.

Pompeii Mount Vesuvius 2018 predictions
Shutterstock

There are days when you're not in the mood to cook for yourself, which is why grabbing takeout is such a great option. Apparently, the residents of ancient Pompeii felt the same way.

Before the city was destroyed by the disastrous eruption of Mount Vesuvius in 79 A.D., most people who lived in the area didn't have a home kitchen and instead took advantage of shops called "popinae" that offered prepared food like porridge, ham, and stew.

And in the same way we can peruse menus on the walls of McDonald's or Burger King, Pompeians could check out painted frescos that featured the meals they could order.

27
Chicago is sinking at a similar rate to Venice.

Chicago downtown and Chicago River at night in USA.
Shutterstock

You may have heard that Venice is sinking, but so is Chicago—and it's going down just as quickly. According to the National Oceanic and Atmospheric Administration (via the Chicago Tribune), the Illinois city is getting 1 to 2 millimeters lower every year (that's 4 to 8 inches every century).

For comparison, Venice is sinking at a rate of 2 millimeters per year. The phenomenon is due to a glacial melt that happened around 10,000 years ago. It led to some areas rising after the weight of the ice was gone. Now, the ground is settling again, which means it's sinking back down.

28
Scientists made music especially for cats.

tabby cat in sink
Shutterstock

Cats apparently appreciate music as much as we do, but they don't necessarily like the same tunes as humans. That's why in 2015, scientists from both the University of Wisconsin, Madison, and the University of Maryland worked together to compose "cat-centric music."

Charles Snowdon, the lead author on the study, explained, "We looked at the natural vocalizations of cats and matched our music to the same frequency range, which is about an octave or more higher than human voices … And since cats use lots of sliding frequencies in their calls, the cat music had many more sliding notes than the human music."

29
Africa is the only continent with land in all four hemispheres.

Africa map on a globe, smarter facts
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As you already know, planet Earth is divided into four hemispheres: north, south, east, and west. But only one of the seven continents can lay claim to being located in all four, and that's Africa.

30
Déjà vu is just a brain-processing lag.

Man Thinking {Brain Games}
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Though it hasn't been 100 percent proven, there's a consensus among scientists that déjà vu results when there is a split-second delay in transferring information from one side of the brain to the other. Your brain gets the information twice, essentially processing the event as having happened before.

Think of it like your mind glitching and opening the same web browser twice.

31
"J" is the only letter that doesn't appear on the periodic table.

Science chemistry concept. Laboratory test tubes and flasks with colored liquids on the periodic table of elements, smarter facts
Shutterstock

If you run through the list of elements found on the periodic table, there's only one letter missing: "J." (That is, unless you're looking at a periodic table from countries like Norway, Poland, Sweden, Serbia, or Croatia, which use the name "jod" for iodine.)

32
People in medieval times walked differently than we do now.

close up of man's legs walking up stairs
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Back in medieval times, shoes were basically thin strips of leather that covered the foot and didn't provide much protection at all. Because of this, people walked the same way we naturally do when we're barefoot—toe first, which allows us to test the surface in front of us and puts less stress on our knees.

In fact, it's how humans walked for millennia before the arrival of modern-day shoes, which keep our feet much safer, so we can step down harder with our heels first.

33
Family members share a smell.

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The natural smells of any two family members are similar, according to research out of Wayne State University. Researcher Glenn Weisfeld believes that shared scent could explain why stepchildren are often treated differently than children living with their biological parents.

"I think it's an important mechanism in how people discriminate against stepchildren," he told New Scientist in 2001.

34
Green "emerald icebergs" exist.

emerald iceberg
Shutterstock

It's hard to imagine icebergs as anything other than gigantic snow-white mini-islands floating around the coldest places on Earth. But for years, scientists have been baffled by the occasional "emerald iceberg."

While the color may seem odd, glaciologist Stephen Warren of the University of Washington has climbed up one of the frozen wonders to get a closer look.

"What is most amazing is not their color but rather their clarity, because they have no bubbles," he told IFL Science. "Ordinary icebergs originate as snow; as the snow is compressed under its own weight into ice, the air in the snow is closed off as bubbles. So glacier ice contains numerous bubbles, and icebergs are bright and cloudy."

After taking samples from the jade-colored iceberg, Warren found that the color was due to the fact that the icebergs were made of marine ice instead of glacial ice, and contained more iron oxide than typical ice.

35
Red-eye in photos is a reflection of your blood.

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When the flash of a camera goes off, the eye isn't prepared for the sudden influx of light, and the pupil doesn't have time to restrict. You're likely using flash in dark lighting, so your eyes have dilated to adjust to the dark room. When the flash goes off and the photo is taken, your eyes are still dilated, so the light reflects off of the red blood vessels of the choroid, which is the layer of connective tissue in the back of the eye that nourishes the retina.

36
Princess Leia's hair in Star Wars was inspired by real Mexican rebels.

Princess Leia A New Hope
Walt Disney Motion Pictures

Star Wars may have taken place "a long time ago in a galaxy far, far away," but the movie-makers responsible for coming up with Princess Leia's iconic hairstyle for the film were allegedly inspired by some very real-life warriors. In particular, the female Mexican rebels known as soldaderas, who fought against the dictatorship of Porfirio Díaz around the beginning of the 20th century.

It's believed that director George Lucas based Leia's double buns on a picture of Clara de la Rocha, who was a colonel in the Mexican Revolution.

RELATED: 25 Amazing Star Wars Facts Even Fans Don't Know.

37
An archaeologist discovered a 5,000-year-old brewery in China.

Fresh beer filling the glass directly from the tap. With extra foam spilling over glass.
iStock

Kicking back with a pint isn't as modern as you might think. In 2016, archaeologists in the Central Plain of China discovered "beer-making tool kits" in underground rooms that were built between 3400 and 2900 B.C. The equipment included funnels, pots, jugs, and a pottery stove.

Scientists used the residue they found inside of the tools to deduce the 5,000-year-old beer recipe, which they published in the Proceedings of the National Academy of the Sciences.

38
Astronauts grow up to 2 inches in space.

astronaut working in space with earth in the background, did you know
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While astronauts are floating around in space, they aren't subjected to the pressure of Earth's gravity. As a result, the vertebrae in their spines can expand and relax, which means their bodies stretch up to 3 percent taller. That means that someone who's 6 feet tall could grow up to 2 inches while they're in space.

However, the additional height is only temporary. When astronauts return to Earth, they shrink back down to their normal size within a few months.

39
The FBI once investigated a song for two years.

FBI agent Amazing Facts, did you know facts
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As far as national security goes, songs are typically harmless. But back in the 1960s, parents across the country became upset by a rumor that claimed the song "Louie Louie" by The Kingsmen contained inappropriate subliminal messages.

The Federal Bureau of Investigation (FBI) stepped in and spent more than two years putting the tune through various audio tests. And despite producing a 120-page report, the feds merely concluded that the song is "unintelligible at any speed."

40
Men's tongues are usually longer than women's tongues

older white man looking at the camera and sticking his tongue out
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Humans come in all shapes and sizes, but in general, women tend to be smaller than men in various ways—and that includes the tongue.

While the average length of men's tongues is around 3.3 inches, women tend to have tongues that are slightly smaller at 3.1 inches.

41
There have been two sets of semi-identical twins.

twin babies, did you know facts
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You know about identical twins (when two babies result from the same fertilized egg) and fraternal twins (when a woman releases two eggs and they're both fertilized)—but did you know that semi-identical twins also exist?

Only two pairs have ever been identified and the most recent pair was a boy and a girl born in Brisbane, Australia, pretty recently, according to research published in the New England Journal of Medicine in 2019.

"The Brisbane twins are likely the result of one egg being fertilized by two sperm cells, resulting in three chromosomes," according to IFL Science. "These three chromosomes were equally divided into two bunches of cells that then became two embryos."

42
Jellyfish can be as big as humans.

jellyfish
Shutterstock

In July 2019, underwater cinematographer Dan Abbott and wildlife biologist and presenter Lizzie Daly were diving in the U.K.'s Celtic Sea when they came across something incredible: a giant barrel jellyfish (Rhizostoma pulmo) that was as big as the humans themselves.

Abbott was able to capture a video of the creature. These jellyfish are not even as big as the lion's mane jellyfish (Cyanea capillata), which can float around the ocean at a full length of 120 feet.

RELATED: 30 Scary Ocean Facts More Terrifying Than Anything in Outer Space.

43
Fish skin can be used to heal burns.

Sustainably caught seafood
Shutterstock

In parts of Brazil, doctors lacking the supplies medical professionals in the United States might use are instead utilizing tilapia skin to bandage and treat second- and third-degree burns. The fish skin reportedly cuts down on healing time, reduces the need for pain medication, and helps with scarring, due to the abundant amount of collagen proteins.

In 2018, scientists from Nanyang Technological University in Singapore also discovered that, in general, fish scale-derived collagen can help heal wounds.

44
Armadillo shells are bulletproof.

armadillo near the everglades
Shutterstock

In 2015, a man in Texas tried to shoot an armadillo that he found wandering around his yard and got quite a surprise: Armadillo shells are bulletproof.

The unlucky fellow made this discovery when he fired his gun and the bullet ricocheted off of the animal—only to hit the man in the jaw, which he had to have wired shut when he was taken to the local hospital.

45
Four seconds is the perfect length of time to dunk your Oreos in milk.

Chocolate Oreo brand cookies are depicted with a glass of milk, smarter facts
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If you like to enjoy the classic combination of milk and cookies, but hate when your cookie gets too soggy, you're not alone. That's why researchers at Utah State University in 2017 conducted tests to determine the ideal length of time you should let your cookie soak in milk.

Their findings? Four seconds. That timeframe is backed up by a professor of physics at the University of Bristol who came up with a complicated equation in the 1990s that determined that the ideal length of time for dunking a British biscuit was three-and-a-half to five seconds.

46
The number of kangaroos in Australia has nearly doubled in recent years.

kangaroos hugging in a field
Shutterstock

It's easy to get a kick out of kangaroos thanks to their impressive hopping abilities, but Australia is facing a problem when it comes to the multiplying marsupials.

In recent years, the number of kangaroos has nearly doubled down under, from about 27 million in 2010 to almost 45 million in 2016. In order to deal with the population that's quickly gotten out of control, experts are encouraging residents to eat the kangaroos.

47
Charles Darwin frequently ate the animals he studied.

Charles Darwin became famous after 40
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Speaking of eating odd animals, the "Father of Evolution," Charles Darwin, always had a taste for unusual cuisine—he was even a member of The Glutton Club while a student at Cambridge University.

According to io9, "He ate the iguanas he studied on the Galapagos. He ate armadillo, which he claimed tasted like duck. He ate puma. The lesser rhea, known to scientists as Rhea darwinii, got its name because Darwin sent the few bits of it he hadn't eaten to London."

According to Foodbeast, the scientist had been enjoying the large flightless rhea bird for Christmas dinner.

48
Some trees are fire-resistant.

Oak tree on green field
Shutterstock

The bark of older Redwood and Sequoia trees builds up over time to protect them from the elements. The bark, which can grow up to 1 foot thick, contains tannin, which provides protection against fire and fungus.

Tannin solutions are actually used regularly in contracting wooden buildings to mitigate any potential for fire damage, per a 2012 study published in the European Journal of Wood and Wood Products.

49
Picasso's full name was 23 words long.

black and white image of pablo picasso
aijaphoto / Shutterstock

Picasso is one of the most famous names in the art world. But it turns out his real name was actually a little longer than what we're used to hearing. In fact, it was a lot longer.

The painter's full name was Pablo Diego José Francisco de Paula Juan Nepomuceno María de los Remedios Cipriano de la Santísima Trinidad Martyr Patricio Clito Ruíz y Picasso.

50
Only one U.S. president has been inside the vault at Fort Knox.

vault full of gold bars, astonishing facts
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Fort Knox is one of the most secure places in the United States, which is why it shouldn't shock anyone that visitors aren't welcome at the guarded facility.

However, it may surprise you to learn that even our country's leaders aren't given permission to visit. In fact, only one president—Franklin D. Roosevelt—has ever been inside the vault; that was way back in 1943.

51
Researchers discovered 1,000-year-old "jars of the dead" in Laos.

unused mason jars in home toss these things from your house for instant happiness
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In May 2019, the Australian National University announced that "mysterious jars of the dead" had been "unearthed" in Laos. While researchers and scientists aren't quite sure what the curious containers were originally meant for, they "believe they were related to [the] disposal of the dead."

The 137 jars were discovered in a remote forest area, in addition to others that had been found in the past.

"These new sites have really only been visited by the occasional tiger hunter," said Nicholas Skopal, the PhD student who made the discovery. "Now we've rediscovered them, we're hoping to build a clear picture about this culture and how it disposed of its dead."

52
Bruises change color because they're losing oxygen.

Bruise on a woman's arm
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A bruise is caused by bleeding under the skin; tiny capillaries (blood vessels) are crushed, which expel blood that's trapped under the skin. Initially, the bruise will just look red because the blood is still oxygen-rich.

Within one to two days, the blood begins to lose its oxygen, turning purple. Then, after three or more days, bruises will start to turn green, yellow, or grey thanks to compounds called biliverdin and bilirubin that break down the hemoglobin to absorb vitamins and minerals (like iron) for the body to use. The rest of the waste is eventually purged from or absorbed by the body.

53
The first use of "OMG" was in a letter to Winston Churchill in 1917.

Winston Churchill As Prime Minister 1940-1945
Alamy

If you text "OMG" to your friends, you might think that you're using a modern abbreviation. But it turns out that the first appearance of the three-letter expression was in a letter to Winston Churchill in 1917.

Lord Fisher, an admiral and naval innovator, wrote to the British prime minister and was obviously excited about a possible honor for himself and those in his line of work. He wrote,"I hear a new order of Knights in on the tapis—O.M.G. (Oh! My God!)—Shower it on the Admiralty!"

RELATED: 53 Heartwarming Facts That Will Instantly Make You Smile.

54
Archaeologists have identified a 2,000-year-old tattoo needle.

Two men, tattoo artist tattooing a man's arm in his tattoo studio.
iStock

Before archaeologists decided that a cactus spine tool was, in fact, the earliest evidence of tattooing in the U.S., the peculiar object was merely seen as an "odd-looking little artifact," according to National Geographic.

Made from prickly pear cactus spine needles and a handle carved from lemonade sumac, the item was then bound with yucca fiber and the tips dipped in dark pigment in order to produce body art around 2,000 years ago. That's 1,000 years earlier than historians previously thought that the art had first been practiced in the Southwest.

55
Sesame Street's Snuffleupagus character has a first name.

sesame street
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Snuffleupagus—or Mr. Snuffleupagus, if you're fancy—is a beloved character on the long-running children's television show Sesame Street. But while millions of kids adore the big (and big-hearted) creature, they may not know that his first name is Aloysius.

56
Dogs really can smell your fear.

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If it seems like your puppy pal is always aware of your mood, it's because their highly sensitive nose does, in fact, alert them to your emotional state.

According to Psychology Today, dogs can not only tell when you're happy, but they can also smell human fear by picking up "chemosignals," which are body odors produced in human armpits.

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The most relaxing song ever is "Weightless" by the Marconi Union.

listening to yoga music before bed helps you sleep, study says.
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If you need to relax, try putting on "Weightless" by the Marconi Union. A 2017 study led by David Lewis-Hodgson, PhD, of Mindlab International, found that the tune is the "most relaxing song on Earth," reducing listeners' stress and anxiety by 65 percent.

The song was so successful when it came to chilling people out during the study, that Lewis-Hodgson said, "I would advise against driving while listening to the song because it could be dangerous."

58
If you removed the empty space from atoms, all of humanity could fit inside an apple.

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An atom is more than 99 percent empty space, and they are ridiculously tiny. For an idea of how small, exactly, know that just one strand of your hair is about 1 million atoms thick.

This is all to say if you were to take out all of the empty space in atoms, and then compress the atoms so they were physically touching, all of the human beings on the planet combined would be about the size of an apple.

59
The most popular movie theater snack in Colombia is roasted ants.

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While most people in North America grab a bucket of popcorn when they go to the movies, that's not the case everywhere.

For instance, if you were to see a film in Colombia, you could try out roasted ants called "hormiga culona." And if you're heading to the theater in Norway, you can enjoy dried reindeer meat.

60
Phobophobia is the fear of phobias.

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There are plenty of things to be afraid of, including heights, small spaces, and, of course, spiders. But there are people who actually have a phobia about phobias themselves, which is called phobophobia. That's taking "nothing to fear but fear itself" to a new level.

61
The Eiffel Tower can grow more than 6 inches during the summer.

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The Eiffel Tower in Paris is made up of more than 7,300 tons and 1,063 feet of iron. But during the summer heat, the structure's metal expands, which means that it can grow more than 6 inches in height during the sizzling season.

62
Canadians say "sorry" so much, a law was passed that an apology can't be used as an admission of guilt.

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Canadians are well-known for being incredibly polite, perhaps even to a fault. That's why in 2009, the province of Ontario passed the "Apology Act," which states that saying "sorry"—which can be an expression of sympathy or regret—can't legally be considered an admission of guilt or fault.

63
You're not really seeing black in a pitch-black room.

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We may call it "pitch black," but what you're seeing is "eigengrau," which is "dark light," often referred to as "brain grey." It's the completely uniform dark (almost black) gray background that many people report seeing in the absence of light.

Some people prefer to call what they see "visual noise," because it's actually an ever-changing field of tiny white and black dots.

64
YouTube was founded on Valentine's Day and started as a dating app.

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Today, YouTube is the place to go for makeup tutorials, toy reviews, and music videos. But when the site was founded on Valentine's Day in 2005, it was meant to be a dating app where singles could upload video profiles.

Years later, YouTube cofounder Steve Chen explained, "We always thought there was something with video there, but what would be the actual practical application? We thought dating would be the obvious choice."

65
Presidents' Day and Martin Luther King Jr. Day are the only federal holidays to commemorate birthdays.

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While there are 11 federal holidays in the U.S., only two celebrate birthdays. Presidents' Day started as a celebration commemorating the birthday of George Washington, who was born on Feb. 22, 1732. Today, it's celebrated on the third Monday in February.

And Martin Luther King Jr. Day is held on the third Monday of January, which tends to fall close in date to Martin Luther King Jr.'s actual birthday on Jan. 15. It was observed for the first time on Jan. 20, 1986, three years after former president Ronald Reagan made the holiday official.

66
German chocolate cake wasn't named after Germany.

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While German chocolate cake sounds like something that originally hailed from Berlin or Munich, it wasn't named after its country of origin. Instead, it was named after baker Sam German, who invented the chocolate in the cake, but not the recipe.

In 1852, German, who was either American or English (not German) came up with a special kind of baking chocolate for the Baker's Chocolate Company, which named it after him, i.e. "German's Chocolate." When a woman in Texas used the chocolate for her cake recipe and submitted it to a Dallas newspaper more than a century later in 1957, she named the dessert "German's Chocolate Cake."

In time, the possessive "s" was dropped, and it became simply German chocolate cake.

RELATED: The 60 Most Beautiful Words in the English Language—And How to Use Them.

67
There's a person buried on the Moon.

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There's only one human who's made the Moon their final resting place. Eugene Shoemaker was considered one of the founders of planetary science, and after a career filled with stellar accomplishments, he spent his days traveling around the world to study impact craters.

When he passed away in 1997 during one of his trips, his wife, Carolyn, who had once discovered a comet with her husband, sent his ashes to the Moon in a metal cylinder that was inscribed with a quote from Romeo and Juliet: "And, when he shall die / Take him and cut him out in little stars / And he will make the face of heaven so fine / That all the world will be in love with night / And pay no worship to the garish sun."

68
Oscar Hammerstein II was the first and only person named "Oscar" to win an Oscar.

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In 1941, lyricist Oscar Hammerstein II won his first Academy Award for Best Original Song, thanks to the lyrics he wrote for "The Last Time I Saw Paris" from the film Lady Be Good. The win also made him the first person to take home an Oscar who shared a name with the award's statue.

According to Portable Press, he's still the only Oscar to ever win an Oscar. And he won a second for Best Original Song in 1945, so this one Oscar has two Oscars to his name.

69
Watching a horror movie prior to viewing art enhances the experience for most people.

family on the couch watching movie while popcorn spills on the floor, best halloween movies for kids
Monkey Business Images

When researchers in a 2012 study published by the American Psychological Association exposed a group of people to five different conditions—some participants watched a horror video while others saw a happy clip, some did a little exercise while others did twice as much, and the fifth group did nothing at all—the majority of subjects had the same reaction afterward when viewing art, except those who had watched the scary video.

The study found that those who had watched the horror scene rated the art they were later shown as "sublime," and were able to appreciate it more than those who had not been left fearful.

70
"Treppenwitz" is the German word for thinking of a comeback when it's too late.

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The next time you think of the perfectly witty response hours—or even days—after someone says something snarky to you, you'll know what to call the frustrating experience. "Treppenwitz" is the German word for thinking of a comeback too late.

It literally translates to "staircase joke" because "the witty retort usually hits you in the stairwell on your way out. Of course by then it's already too late to use it," notes DW Akademie.

According to Mental Floss, "the French have a word for this, too: esprit de l'escalier—literally, 'the spirit of the staircase.'"

71
There are no rhyming words for "month," "bulb," "wolf," "walrus," "rhythm," "husband," or "woman."

Woman reading and flipping through the dictionary, common word origins
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Unless you get a little creative with your pronunciation, you won't find any rhyming words in the English language for "month," "bulb," "wolf," "walrus," "rhythm," "husband," or "woman."

That is, unless you choose to consider old-fashioned words that are no longer in use, such as "culb," the little known 17th-century word for a snippy reply, and "smitham," which refers to fine-malt dust or powdered lead ore.

72
The University of Karaouine is the world's oldest educational institution.

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Located in Fez, Morocco, the University of Karaouine (or University of al-Qarawiyyin) was founded all the way back in 859. It has continued to operate for more than a thousand years, which earned it the Guinness World Record for "Oldest higher-learning institution, oldest university."

In 1963, it was incorporated into Morocco's modern state university system; nearly 8,000 students enroll each year.

73
IKEA is an acronym which stands for Ingvar Kamprad Elmtaryd Agunnaryd.

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In 1943, Ingvar Kamprad, who was 17 at the time, was given money from his father as a reward for doing well with his schoolwork. With his earnings, the teen decided to start his own business.

To name it, he used his own two initials (I and K), as well as the first letters of the name of the farm and village where he grew up, Elmtaryd (E) and Agunnaryd (A). Put them all together and you have IKEA.

74
The elephant's closest relative is a guinea pig-like creature.

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If you were to guess what sort of animal is the elephant's closest relative, you might be picturing something large with an elongated nose. But you'd be way off the mark. Instead, you'd need to take a look at the rock hyrax, a small rodent-like mammal that lives in Africa and the Middle East.

While the two animals seem like they have nothing in common, they descend from a common ancestor and both have tusks and flat nails. They also have another closely related mammal relative: the manatee.

75
An optical illusion can make the moon appear to go backwards.

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On March 6, 2019, NASA's Solar Dynamics Observatory, which is in orbit around Earth, captured a strange phenomenon in space: The moon was crossing in front of the sun, then suddenly seemed to stop before it began to move backwards.

According to NASA, the unusual optical illusion was due to the fact that "a celestial object appears to move backwards because of the way that different objects move at different speeds at different points in their orbits."

The same effect occurs when you're driving and pass a slower car—it will appear to be going backward for a moment as you move ahead.

76
Vikings gathered to make legal decisions in community meetings called "things."

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We have all kinds of words for important gatherings where networking happens and decisions are made: meetings, conferences, conventions, assemblies, legal proceedings. But back in the days of the Vikings, communities would come together to decide on laws and conduct cases—as well as hand down judgments—at gatherings called "things."

77
The man who invented the Rubik's Cube couldn't solve it at first.

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When professor Ernő Rubik invented the Rubik's Cube in 1974 to teach his students about 3-D geometry, even he couldn't solve the puzzle he had created. He famously wrote that it was like "staring at a piece of writing written in a secret code. But for me, it was a code I myself had invented! Yet, I could not read it. This was such an extraordinary situation that I simply could not accept it."

Despite his initial inability to take down his own toy, he eventually learned to master the cube, and could solve the puzzle in under a minute.

78
There are multiple versions of the Mona Lisa.

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The Mona Lisa may be the most famous painting in the world, but she's not actually an original. There are multiple copies of the Mona Lisa, all thought to be painted by Leonardo da Vinci, though some may have been made by his students who were attempting to copy their master's work as practice.

Along with the Mona Lisa in the Louvre, there's also the Isleworth Mona Lisa, the Prado Museum La Gioconda Mona Lisa, the Hermitage Mona Lisa, Salaì's Mona Lisa, and even a nude version. Oh my!

79
The Pillsbury Doughboy's name is Poppin' Fresh.

Pillsbury Doughboy float in macy's thanksgiving day parade, smarter facts
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You've probably always called the cute little creature who promotes pre-prepared pastry dough the Pillsbury Doughboy. But he happens to have a name: Poppin' Fresh.

He also has a wife named Poppie Fresh and two children: a son that goes by Popper and a daughter known as Bun Bun. There's also the grandparents, Granmommer and Granpopper, as well as Uncle Rollie. And if that wasn't enough, the family has a dog called Flapjack and a cat named Biscuit.

80
Bagpipes were probably first used in ancient Egypt, not Scotland.

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Bagpipes may be one of the most recognizable symbols of Scotland, commonly played by kilt-clad musicians.

But the origin of the instrument has been traced all the way back to ancient Egypt where, in 400 B.C., the so-called pipers of Thebes used similar instruments made from bone and animal skin. The bagpipes may have then made their way over to Scotland in the hands of Roman invaders.

81
Cannabis is millions of years old.

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Cannabis may be going through widespread legalization these days, but you probably don't know much about its origin story.

University of Vermont findings from 2019 that were published in the journal Vegetation History and Archaeobotany show that it may have first grown millions of years ago around Qinghai Lake, the largest lake in China, located on the Tibetan Plateau.

82
One type of turtle can survive months under ice by breathing out of its behind.

painted turtle, chrysemys pica, smarter facts
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Not all creatures head to warmer climates when the weather gets colder, and that means they need to adapt to the changing conditions. And while bears get cozy in caves and bees nuzzle up in their nests, painted turtles deal with their ponds freezing over in a more surprising way.

As the ice restricts their access to the air above the water, these turtles breathe through their behinds (specifically, their cloaca) through a process called cloacal respiration. This way, they're able to get oxygen directly from the water around them.

83
The reason the Leaning Tower of Pisa is tilted is the same reason it's still standing.

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If you've ever wondered why the Leaning Tower of Pisa is tilted, it's due to the soft soil beneath the building's surface. And while that might have frustrated the people who constructed the landmark, engineers have figured out that the soft soil is partially what protects the building from earthquakes.

The tower's height and stiffness, as well as the softness of the soil at the building's foundation, "causes the vibrational characteristics of the structure to be modified substantially, in such a way that the Tower does not resonate with earthquake ground motion," according to Phys.org.

84
The first movie ever to release a soundtrack was Snow White and the Seven Dwarfs.

snow white and the seven dwarfs
Walt Disney Studios Motion Pictures

There are plenty of classic film soundtracks that movie-lovers and music-lovers alike enjoy listening to over and over again. But the very first film to ever commercially release a soundtrack was Disney's Snow White and the Seven Dwarfs.

The movie came out in 1937, while the soundtrack—called Songs from Walt Disney's Snow White and the Seven Dwarfs (with the Same Characters and Sound Effects as in the Film of That Title)—was released in Jan. 1938, and included tracks like "I'm Wishing," "Whistle While You Work," "Heigh-Ho," and "Someday My Prince Will Come."

RELATED: 35 Disney Facts That Will Bring Out Your Inner Kid.

85
The Mayan and the Aztec People used cocoa beans as a form of currency.

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Today, we can pay with cash, credit, or debit, but back in the times of the ancient Mayan and Aztec people, cocoa beans were currency. The precious seeds were also a valued commodity that could be traded for other goods.

86
LEGO translates to "play well" in Danish.

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The name "LEGO" is so well-known you've probably never stopped to think about where the seemingly random word comes from. But according to the company itself, "LEGO" is an abbreviation of the Danish words "leg godt," meaning "play well." They say, "It's our name and it's our ideal."

87
Sweat doesn't smell.

girl with sweat stains Embarrassing Things
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The smell of sweat is actually caused by the presence of bacteria on your skin that breaks the sweat coming out of your pores down into acids, according to the Mayo Clinic.

Deodorants, which are antibacterial and often contain alcohol, work by killing the bacteria on your skin that does this. Antiperspirants, on the other hand, work by forming a gel that temporarily plugs the sweat glands on your skin, blocking them and reducing the amount of sweat that seeps through.

88
The Andromeda Galaxy has a star that explodes every year.

Andromeda galaxy, taken with my Sky-Watcher mount and a telescope, smarter facts
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Some pretty amazing things happen over in Andromeda, which is the galaxy right next to our own Milky Way. That includes the M31N 2008-12a star, which is actually a "recurrent nova."

That means it erupts regularly, shedding a shell of its outer layer into space approximately once a year, according to the journal Nature.

89
The Library of Congress is the largest library in the world.

Library of Congress Overview
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With more than 162 million items in no fewer than 450 languages, the Library of Congress in Washington, D.C., is the largest library in the world, based on both its shelf space and the number of books that is on them.

When it comes to other impressive libraries, the British Library (with more than 150 million items) comes in at No. 2, followed by the Library and Archives Canada (54 million items), the New York Public Library (53.1 million items), and the Russian State Library (44.4 million items).

90
There was more than $1 million of hidden treasure buried in the Rocky Mountains.

rocky mountains in colorado, smarter facts
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In 2016, Forrest Fenn, a former Vietnam fighter pilot who's also an art dealer and an author, claimed that he had hidden a treasure chest in the Rocky Mountains that was worth more than $1 million. Fenn told NPR, "No one knows where that treasure chest is but me. If I die tomorrow, the knowledge of that location goes in the coffin with me."

Fenn provided a few hints to its location in his self-published memoir, The Thrill of the Chase, along with a supposedly clue-filled poem from the book he posted on Instagram.

He wrote, "All of the information you need to find the treasure is in the poem. The chapters in my book have very subtle hints but are not deliberately placed to aid the seeker. Good luck in the search."

Thousands of people went out in search of the treasure, which was eventually found in 2020.

91
That dimple in your wine bottle serves a purpose.

Bottom of Wine Bottle Everyday Things With a Real Purpose
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Also referred to as a "kick-up" or a "punt," the dimple in the bottom of your wine bottle is a remnant from the past, when the bottles were made of handblown glass. If the glassblower didn't push the seam of the bottom of the wine bottle up, it would not stand up straight (because there would be a lump).

Today, a deeper punt can mean it's a nicer, tastier bottle of wine. So run your hand underneath that bottle of vino before purchasing!

92
Polar bears run faster than professional football players.

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Polar bears can run at 25 mph. By comparison, the current fastest NFL player, D.K. Metcalf, was clocked at a maximum speed of 22.23 mph.

93
You can never recall a single memory all by itself.

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When you're trying to recall a single memory, such as a smell or the look on a person's face, that memory can't be recalled in isolation.

That was among the 2015 findings by a team of neuroscientists at the University College London, who discovered that when we try to remember one detail (for example, the color of shoes a friend was wearing last week), we bring with it a slew of other details (such as the place where we saw said friend wearing the shoes, their other clothing, etc.).

According to the researchers, this is because the brain's hippocampus packages memories together and stores them. And when we retrieve one memory, it brings along a whole range of other components.

94
Hotter temperatures are turning mummies into black goo.

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Mummies preserved for more 7,000 years in Peru have been turning to black goo thanks to a major increase in humidity.

When Harvard University scientists tested why in 2015, they discovered it's because the microbes in the skin activate in high humidity, which is something that the people in ancient Peru never had to worry about, because of the dry desert atmosphere. However, recent changes in climate have brought fog to the region, thereby increasing the moisture in the air and melting the mummified human remains.

95
Alcohol makes your body think it's being burned.

Woman With a Drink, etiquette mistakes
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Ethanol (alcohol) activates the vanilloid receptor-1 (VR1 for short), which is what your body activates at high temperatures (107 degrees Fahrenheit or higher, usually) to let you know that you're getting burned. Alcohol lowers the temperature at which your VR1 receptors activate, so instead of alerting you when your temperature rises above 107 degrees, it does so when it hits 93 degrees.

In other words, your receptors are telling you that your normal body temperature (98.6 degrees) feels like burning. It's also why open wounds sting when you pour alcohol over them—and it's why you get a burning in your throat when you pound a particularly potent shot.

96
People with fatal hypothermia think they're overheating.

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Yes, people freezing to death will often take off their clothes. This "paradoxical undressing" occurs in nearly half of all hypothermal deaths. It hasn't been fully studied because it would be pretty unethical to do so, but there are two theories at this point:

  1. The nerves in blood vessel walls are paralyzed due to the cold, which leads to vasodilation (where blood flows more freely to the surface of the skin) giving the illusion of warmth.
  2. The vasoconstriction experienced in the first stage of hypothermia actually paralyzes the vasomotor center—which is what controls the sensations of body temperature in the whole body.

It gets even weirder after that: Once undressed, the person will attempt to burrow into very small spaces. Finding bodies in states like this is why hypothermia deaths are commonly misconstrued as acts of violence.

97
Espresso isn't technically coffee.

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We usually think of espresso simply as concentrated coffee, but it's more complex than that. To officially be "espresso," the drink must be made in a particular way—produced by pressurizing near-boiling water through finely ground coffee beans packed into cakes.

If the drink is made any other way (in a stovetop pot or fancy pour-over method), it's coffee. Even if it were to taste exactly like a shot of espresso, you can't call it that unless it's made through the pressurized method. In other words, espresso isn't coffee.

98
You exhale fat when you lose it.

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While a few deep breaths don't burn too many calories, that is how most burned-off fat exits our bodies. You may have thought it was through sweat, urine, or some other excretion, but the truth is, as we exercise or go about our day, most of the fat (84 percent, according to 2014 research published in The BMJ) is converted into carbon dioxide and leaves our bodies through our lungs.

The remaining 16 percent of the fat is converted to water, which exits our bodies through urine or sweat.

99
Yosemite National Park made a bid to host the 1932 Winter Olympics.

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In the past, a few U.S. cities have hosted the Winter Olympics, including Lake Placid in 1932 and 1980, and Salt Lake City in 2002. But back in 1932, Yosemite National Park wanted to host the international games, according to the National Park Service (NPS).

After installing toboggan runs and an ice skating rink, the people behind Yosemite set their sights on the Olympics. However, due to the fact that the park lacked other facilities and California didn't have a lot of experience with winter-related competitions, the bid went to Lake Placid.

RELATED: 63 National Park Facts About America's Most Beautiful Destinations.

100
Women have Adam's apples.

Adam's apple Health Boosters
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The Adam's apple is the thyroid cartilage that surrounds the larynx. Contrary to popular belief, both women and men have one. It's just more prominent in males because the larynx (voice box) is far larger in men (hence the deeper voices).

101
Firefighters can make water wetter.

Fire fighter pouring water on fire
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Firefighters have a few different tactics that they can use when facing a serious blaze—and that includes the ability to make water wetter. According to International Fire Protection, a wetting agent can be used to increase the "penetration and spreading ability" of water—which is why the treated liquid is called "wet water."

102
Archaeologists have tracked Lewis and Clark by their bodily waste.

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Throughout the early 19th century, explorers Meriwether Lewis and William Clark trekked across the U.S. from the East Coast to the Pacific Ocean. And while they kept diligent journals, modern historians and archaeologists had for years struggled to piece together the precise locations their expedition encompassed—information that would help future generations understand this historically crucial journey.

Then researchers came upon an idea for tracking their exact movements: analyzing toilet mercury. As it happens, mercury-laced laxatives were a popular solution for treating constipation during the Lewis and Clark era, and traces of mercury can be detected centuries after they are deposited. So, by testing old latrine sites along the route for mercury, researchers could determine which ones the famous adventurers visited.

Altogether, some 600 sites have been connected back to the famed pair.

103
Dry cleaning isn't technically "dry."

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Your dry-cleaned garments are thrown into giant front-loading washers with liquid detergent. Yes, your clothes are completely immersed with a liquid solvent; it's only called "dry" because there's no water in it.

Dry cleaning was originally discovered by Jean Baptiste Jolly in 1855, when his maid accidentally spilled petroleum from a kerosene lamp all over his table cloth—only to find out that it removed stains he couldn't previously get out!

Because petroleum is harmful to the environment with the amount of dry cleaning the world does, new solvents have been created over time.

104
Brain-eating amoebas exist.

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Naegleria fowleri is a free-living excavate form of protist that can enter the human body through the nose. It then travels from the nose to the brain, where it destroys the brain tissue, invading the nervous system and consuming the brain.

According to the Centers for Disease Control and Prevention (CDC), it has only been found in warm freshwater: lakes, rivers, and hot springs. So, perhaps you should stick to the ocean for swimming.

105
Sound travels four times faster in water than in air.

Raindrop Falling on a Body of Water False Facts
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Sound is a wave of alternating compression and expansion, so the speed of it depends on how fast it bounces back from each compression; the less compressible the medium it's traveling through, the faster it bounces back.

Water is about 800 times denser than air, so there are way more particles for waves to bounce off. Thus, sound is faster in water.

However, the density has the opposite effect on physical bodies (such as, say, a bullet). Physical matter encounters drag when in the water due to its density, as laid out by the drag equation in An Introduction to Fluid Dynamics. It's been proven that jumping into the water and swimming beneath its surface will literally save you from catching a bullet.

106
There's a meaner plant than the Venus flytrap.

Leaves and bladders of the bladderwort Utricularia vulgaris aquatic carnivorous plant. Underwater shot. - Image
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Carnivorous, bog-dwelling plants called bladderworts can snap their traps shut in less than a millisecond, 100 times faster than a Venus flytrap. They're rootless floating plants that have a yellow flower at the top and an insect-digesting bladder sac. They range in size from a few inches to a few feet long.

107
The tiny holes on padlocks make sure they don't get jammed.

Padlock Everyday Things With a Real Purpose
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The tiny holes in padlocks serve a dual purpose: They allow any moisture that builds up inside to escape, and they allow you to add oil to the inner mechanisms to prevent rust and breakdown.

Because padlocks are usually used outdoors, allowing the water to run out keeps the locks from rusting, and in colder climates, keeps the lock from being frozen shut. If you're ever having issues opening a padlock, stick some WD40 into the tiny holes and you should be able to open it without a problem.

108
Stars are made of matter.

Earth Orbiting Around the Sun Things You Believed That Aren't True common misconceptions
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You might imagine that a star—a giant ball of light and heat—contains zero matter and is made up entirely of energy. Almost!

Stars don't contain matter—gas, liquid, or solid—as we know it. Instead, they're made up of plasma, a super-heated state of matter that humans can't handle. (Lightning is also made up of plasma.)

109
You probably dream in color.

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You've probably heard that "we only dream in black and white." But new research has shown that monochromatic dreams were only the case because of black-and-white screen time. Nowadays, with the amount of time we all spend watching color programming—whether on TV or mobile devices—our brains tend to keep all colors in dreams.

Only about 25 percent of people in one 2008 study published in the journal Consciousness and Cognition reported dreaming in black-and-white.

RELATED: 60 Common Dreams and Their Secret Meanings, According to Experts.

110
The Supreme Court houses a basketball court.

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The Supreme Court, the highest court in the land, is home to a basketball court on its roof (four floors up, to be exact), named, appropriately, the Highest Court in the Land. It's smaller than a regulation-size court but provides a great sweat therapy session. In recent years, it's been modified to include a gym and yoga studio.

111
As far as the law is concerned, video games are art.

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If your parents weren't overly keen on the amount of time you spent playing video games as a kid (and maybe still do), you can justify your pastime with the fact that in 2011 the U.S. Supreme Court ruled that video games are a form of art.

In response to the issue of the sale of violent video games in California, the high court found that video games deserve the same First Amendment protection as books, comics, plays, and other artistic mediums.

112
Your taste buds have an average lifespan of 10 days.

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Adult taste buds, in general, turn over within eight to 12 days. Taste buds are clusters of polarized sensory cells embedded in the tongue, and the ones that are closer to the surface have a shorter lifespan.

That's why, when you burn your tongue, it doesn't take too long until you're able to taste again.

113
Your pencils can be made into diamonds.

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Science may be more glamorous than you think. Graphite can be transformed into diamond by applying a temperature of 3,000 degrees Celsius and pressure of 100,000 atmospheres. That's because graphite and diamond are two forms of the same chemical element, carbon.

And this technique isn't reserved for jewelry: Diamonds are used for a variety of industrial applications, such as cutting tools to electronic devices.

114
There's a rock that floats.

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You've likely used the world's only floating rock on your feet: Yes, it's pumice.

Pumice is volcanic rock that is produced when lava erupts from a volcano, and then cools with a lot of small gas bubbles. Because of all the bubbles, it is less dense than water (and great for scrubbing away dead skin). However, if it's in water for too long, it will eventually become waterlogged and sink.

115
Apologies are way more effective than you thought.

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A 2008 study published in the journal Clinical Orthopaedics and Related Research of people who experienced medical malpractice revealed that 40 percent of them would not have filed a lawsuit if they had received an explanation and apology.

Despite this research being confined to the medical industry, doctor-patient relationships probably are not the only ones that can benefit from a simple apology now and then.

116
There's a trick for discovering a two-way mirror.

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Walk up to the mirror and place your fingertip or nail against it. If the reflection of your finger directly touches your finger, it's a two-way mirror; if there's about 1 centimeter of distance between your finger and the reflection, it's not.

117
Fireflies light up to flirt.

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As Marc Branham, an entomology professor at the University of Florida explained to Scientific American, a firefly's light itself is a result of so-called "cold light." Oxygen combines with calcium, adenosine triphosphate (ATP), and the chemical luciferin, and light is produced with minimal energy being lost to heat.

Fireflies mainly emit light to attract mates (via certain light patterns) or to defend territory (that's why when you put them in a jar, they light up, as a defense mechanism).

118
There's a purpose to those tiny pinholes in airplane windows.

Airplane Window Hole Everyday Things With a Real Purpose
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Those holes in airplane windows are called "breather" or "bleed" holes. Airplane windows have multiple panes, with the breather hole being in the middle to equilibrate between the cabin window and the outside windowpanes: It helps alleviate pressure so that neither the outside nor inside panes crack.

119
Falling in your dream is actually your body trying to protect itself.

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The sense of falling in a dream is the result of what's known as the hypnic jerk, that twitch that happens right as you're about to fall asleep.

According to a 2003 study in the Journal of Neural Transmission, a hypnic jerk occurs during the non-REM (rapid eye movement) sleep cycle and is an "abrupt muscle action flexing movement, generalized or partial and asymmetric, which may cause arousal, with an illusion of falling."

There are some theories as to why this happens, one of which, according to the National Sleep Foundation, is that "as you're drifting off to sleep, your brain misinterprets the relaxing of your muscles as a sign that you're actually falling and signals your muscles to tense up, in order to protect you."

120
Black holes aren't black.

Black Hole Things You Believed That Aren't True
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Black holes are regions that exhibit such strong gravitational effects that nothing can escape from inside it; they basically feed off particles and electromagnetic radiation such as light, which we call "Hawking Radiation," after Stephen Hawking, who proposed their existence.

Because black holes are constantly consuming matter, they give off a dark glow, but they aren't actually black.

Before his passing, Hawking expanded on his black hole theory by positing that instead of black holes existing, they are "apparent horizons," which only temporarily hold matter and energy prisoner before eventually releasing them, albeit in a more garbled form.

RELATED: 25 Solar Eclipse Facts That Will Blow Your Mind.

121
It's not the tip of the whip that makes the cracking sound.

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It was long believed that the sound a whip makes is the result of the tip breaking the sound barrier because it moves faster than the speed of sound.

But a 2002 study conducted at the University of Arizona proved, through calculation and experimentation, that the crack of a whip comes from its loop traveling along the whip, gaining speed until it reaches the speed of sound and creates the crack. However, this doesn't make the tip any less ominous; the tip reaches speeds upwards of 30 times the speed of the loop.

122
Hot water freezes faster than cold water.

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This phenomenon was discovered in the 1960s by a Tanzanian student who observed that a hot ice cream mix freezes faster than a cold mix in cookery classes.

Named the Mpemba effect, after the student, this effect still puzzles scientists near and far, as there's still no definitive reason as to why it occurs (though many agree that it has something to do with bonds).

123
Frozen trees can "melt from the inside."

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Mother Nature is capable of some pretty freakish phenomena, including trees that can melt from the inside out. A video from Evanston, Illinois, went viral in Feb. 2019 when it showed an ice-covered tree that had started to thaw.

The caption explains, "Over three days, the weather went from being 20 degrees one day to ice rain the next to 49 degrees on the third day, creating this ice melting phenomenon."

According to IFL Science, because some of the ice had pulled away from the trunk, melting water from the tree was able to flow between the clear ice and the bark beneath, while the outer layer of ice remained frozen.

124
Sound doesn't really travel in space.

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In space, molecules are spread so far apart that a sound's vibration is unable to reach them in order to vibrate and be heard. The result is a really low frequency that's barely discernible.

So, the famous movie tagline for the sci-fi horror film Alien was right all along: "In space, no one can hear you scream."

125
Coffee gets decaffeinated by going into a sauna.

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There are three main ways to decaffeinate coffee, all which involve moistening the green coffee bean within temperatures between 160 to 210 degrees Fahrenheit.

The approaches vary in the solvents they use to pull the caffeine out of the coffee, in order to achieve the 10 mg or less of caffeine per serving required to be classified as "decaf" (regular coffee has anywhere from 50 to 75 mg of caffeine per serving).

Kali Coleman
Kali Coleman is a Senior Editor at Best Life. Her primary focus is covering news, where she often keeps readers informed on the ongoing COVID-19 pandemic and up-to-date on the latest retail closures. Read more
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