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As of January 2021, there were 4.66 billion active internet users worldwide, which makes 59.5% of the global population. Of this total, 92.6% (4.32 billion) accessed the internet via mobile devices, Statista estimates. So just imagine how much information there is online. In fact, it’s probably impossible to wrap your head around it.

Part of the appeal in going online is that you get to share things with others. From what you’ve been up to, to what’s on your mind. Quite literally. Like this recent thread on Reddit, where the user Mistik06 asked everyone “What’s a cool fun fact that you know?” and got people posting the craziest facts they know. 24k upvotes and 10.7k comments later, we have an amazing collection of trivia facts you probably haven't heard of before, so enjoy!

#1

Someone Asked, ‘What’s A Cool Fun Fact That You Know?’, 40 People Delivered Pufferfish contain a toxin in their spikes that kills predators. It has a slightly different effect on dolphins though, in that it gets them high. So teenage dolphins will pass around pufferfish and impale themselves off of them to get stoned.

The_mystery4321 , unsplash Report

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Michelle M
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1 year ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

Someone better let the pufferfish know. They could build a successful drug empire off it. Puff Cartel.

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#2

Someone Asked, ‘What’s A Cool Fun Fact That You Know?’, 40 People Delivered Apparently, studies show that Crows, Ravens and other Corvids are self aware and are able to ponder the content of their own minds.

TonyThePubeShalhoub Report

#3

Someone Asked, ‘What’s A Cool Fun Fact That You Know?’, 40 People Delivered Dragonflies are the predator with the highest success rate (over 90%), and are one of the few animals that are capable of plotting intercept courses rather than chasing their prey. They're basically mosquito murder drones.

00zau , Mindaugas Balčiauskas Report

#4

Someone Asked, ‘What’s A Cool Fun Fact That You Know?’, 40 People Delivered Elephants think humans are cute in the same way we think puppies and kittens are cute.

stranded_egg Report

#5

Someone Asked, ‘What’s A Cool Fun Fact That You Know?’, 40 People Delivered Scientists speculated there are other planets orbiting distant stars, but haven't had a clear evidence of this fact up until the 1990's. And the majority of currently known exoplanets (almost 5000, as of now!) have been discovered well into 2000's, which means that humanity is at the very beginning of its discovery journey regarding other planetary systems.

With James Webb telescope being extremely close to finalizing its calibrations as we speak, we will be able to not only discover hundreds, if not thousands of new planets (and stars and galaxies), but also detect whether there are traces of alien civilizations on them. We should all be very excited about this, as this is unprecedented, and a HUGE deal for science and our species as a whole.

MadHatter69 Report

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DennyS (denzoren)
Community Member
1 year ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

This is amazing. Sometimes I wonder what it would be like to be born 100 years from now, how advanced would we be.

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#6

Someone Asked, ‘What’s A Cool Fun Fact That You Know?’, 40 People Delivered Ok, this fact has connected facts:

In late 1800s girl killed herself by jumping from bridge on Sienna river and she was known as The Unknown Woman of the Seine.

When the guy who worked in morgue saw her, he thought she was beautiful and ordered a plaster cast of her face.

Fast foward to 1960s, CPR was invented and they needed a doll to train people. So they partnered with Norwegian producer of medical devices. That guy decided to use the plaster cast of Unknown Woman of the Seine and named the doll Anne(Annie) because his doughter was named Anne(Annie).

While performing CPR, people were trained to talk to a doll(person) so there is that common phrase:"Annie! Annie are you ok?"

Fast foward to when Michael Jackson decided to put that phrase in his classic "Smooth Criminal".

SimfonijaVonja , wikipedia Report

#7

Someone Asked, ‘What’s A Cool Fun Fact That You Know?’, 40 People Delivered When Thomas Edison was bound to a wheelchair, Henry Ford bought a wheelchair for himself so that he and Edison could race.

BasherBomber Report

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#9

Someone Asked, ‘What’s A Cool Fun Fact That You Know?’, 40 People Delivered Steven Seagal once told Gene LeBell that he was immune to being choked out from doing so much martial arts training, so Gene choked him out and he sh*t his pants.

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#10

When sea otters find a rock they like to bust open clams, they will tuck it under a fold of skin in their armpit. They also hold each other’s paws while they’re sleeping so they don’t float away from each other. Baby otters aren’t buoyant enough to stay afloat so they will sleep on their mom’s tummies until they’re older.

Soggy_Willingness_65 Report

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Scagsy
Community Member
1 year ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

That's pretty cute. And they keep their favourite little rock where I keep my Cheet-Os! What are the chances? Go little Otter dudes!

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#11

The creator of the pop-up ad made a formal apology for his creation.

iiXXDestruction Report

#12

Someone Asked, ‘What’s A Cool Fun Fact That You Know?’, 40 People Delivered Dinosaurs existed for so long that there were still dinosaur fossils from previous eras while other dinosaurs from future eras were alive.

So basically, when T-Rex was still alive and well, Stegosaurs was nothing more than fossilized bones under their feet even back then.

mjohnsimon Report

#13

Someone Asked, ‘What’s A Cool Fun Fact That You Know?’, 40 People Delivered You can fit the entire population of the human race inside the Grand Canyon. Not just the 7 billion alive now - the entire lot. From the very start. And still have plenty of room for those who are yet to be born.

The-Go-Kid , pexels Report

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80 Van
Community Member
1 year ago (edited) DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

If you piled everyone in there, the birth rate might increase a lot faster than currently expected.

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#14

Someone Asked, ‘What’s A Cool Fun Fact That You Know?’, 40 People Delivered If every person on earth fought 1v1 until there was only 1 winner, that person would only have to win 33 times.

_Germa66 , pexels Report

#15

Someone Asked, ‘What’s A Cool Fun Fact That You Know?’, 40 People Delivered The sound of an ATM drawing cash is a manufactured sound. It's just to let you know that the ATM is indeed working and that your money is coming up.

YoreCoxsmall , pexels Report

#16

Someone Asked, ‘What’s A Cool Fun Fact That You Know?’, 40 People Delivered That if sound could be transmitted through space, the sun would be so loud on earth it would be the equivalent of standing next to a jet engine, even though it's 94 million miles away.

insert_name_0 , pexels Report

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Rabbit Carrot
Community Member
1 year ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

Sound in space travels along gravitational waves and can also be picked up via vibrations. Space agencies have been listening to the sun and planets for years (Jupiter and Saturn sound particularly scary).

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#17

Someone Asked, ‘What’s A Cool Fun Fact That You Know?’, 40 People Delivered Your nose is impacting your vision 100% of the time.

However, since your "picture" you see is just an interpretation by your brain, your brain erases your nose as useless information. You'll only see it, if you really concentrate on it, if you close one eye, or if you put your finger on the very tip of your nose.

It seems like a harmless fact until this thought enters your head...

"Your nose is real. Your brain removes it from your vision as useless, but it is very much there, and very much real. What other things is your brain removing from your vision?"

It's wild to think that your entire life experience is just your brain doing it's best to interpret your senses. And that it's definitely not a "perfect" system. It could be interpreting everything incorrectly, and we collectively wouldn't have any idea.

watch_over_me , unsplash Report

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JinxBox
Community Member
1 year ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

Now it will take me all morning to unsee my nose and eyeglasses again, thank you for this...

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#18

Someone Asked, ‘What’s A Cool Fun Fact That You Know?’, 40 People Delivered Moose are really good swimmer's and even swim from island to island to feed on the underwater vegetation

But orcas will occasionally stumble across then and hunt them down and moose haven't evolved far enough for them to know that orcas are predators

supremekingend123 Report

#19

Someone Asked, ‘What’s A Cool Fun Fact That You Know?’, 40 People Delivered Cracking your knuckles WILL NOT lead to arthritis.

1980pzx , pexels Report

#20

"Twelve Plus One" is an anagram of "Eleven Plus Two"

ConsistentlyPeter Report

#21

The difference between Million and Billion is more than we think.

To put it in perspective, 1 million seconds is about 12 days while 1 billion seconds is equivalent to 31.7 years.

Tusharkrux Report

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80 Van
Community Member
1 year ago (edited) DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

And the difference between a billion and a trillion seconds is 31.7 years and 31,700 years.

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#22

Birds are classified as extant dinosaurs, not just descended from them. They are actual living, breathing dinosaurs.

herculesmeowlligan Report

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Jessica Cifelli
Community Member
1 year ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

Sorry, I find it hard to think of penguins as dinosaurs. Ostriches, emus, even chickens yeah, but not penguins 🐧

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lazy panda
Community Member
1 year ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

You may enjoy this! I can honestly say that I never realized there were prehistoric penguins! https://www.smithsonianmag.com/smart-news/kids-discover-fossil-of-new-giant-penguin-species-180978707/

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Kim Kermes
Community Member
1 year ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

.ook at a cassowary and a half grown Canada goose and you'll agree.

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Charles Barrow
Community Member
1 year ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

While technically correct from one cladistic view point, in that same viewpoint humans are synapsid or going further fish, so while cool sounding not very useful. And a side effect of taxonomy being invented for living species and once you start bring extinct species into it it gets weird.

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Big
Community Member
1 year ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

Whenever I tell people this, they don't believe me.

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Tami
Community Member
1 year ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

Which is why the chicken industry needs to stop using growth hormones before something goes wrong and we end up with a 12 ft monster chicken.

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shinshige
Community Member
1 year ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

How is this even possible given the etymology of the word dinosaur. It means terrible lizard. Birds are not terrible lizards given modern-day biological classifications.

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Ophelia Belle
Community Member
1 year ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

So dinosaurs had feathers? Wonder how they would actually look then

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Su Boddie
Community Member
1 year ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

Take the time to watch chickens - from birth to adulthood. It's all there. Of course, the actual raptors are perfect examples but chickens are easier.

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IJ
Community Member
1 year ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

Fun Fact: the dinosaur extinction was the biggest ratio of killing birds with one stone in history

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Fish Boden
Community Member
1 year ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

Classified by whom? And why are they called birds and not dinosaurs?

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Oli Junta
Community Member
1 year ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

And now imagine T-Rex trying to sit on a stick and sing in the morning light

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no name
Community Member
1 year ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

Is dinosaur an appropriate classification for birds since dinosaur means terrible lizard in Greek?

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Mary Rogers
Community Member
1 year ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

Just because dinosaurs resembled giant lizards (which is where the name came from) does not mean they were actually lizards.

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Tigerpacingthecage
Community Member
1 year ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

Yeah. I read a summer course at university about dinosaurs (for fun, I'm a social worker so not related at all) and it's pretty interesting. You would think reptiles are more like dinosaurs, or so I thought.

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#23

Manatees regulate buoyancy by farting. They eat a ton of plants and accumulate a lot of methane. They then release gas when they want to sink and hold it in when they want to go to the surface or are being polite.

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#24

Someone Asked, ‘What’s A Cool Fun Fact That You Know?’, 40 People Delivered A single gram of DNA contains about 700 terabytes of information.

Clover-Bug , unsplash Report

#25

Someone Asked, ‘What’s A Cool Fun Fact That You Know?’, 40 People Delivered When they first measured the height of Mt. Everest it was exactly 29.000 feet, but as that sounds like a made-up number they declared it to be 29.002 feet.

buckfutter4life , pexels Report

#26

Someone Asked, ‘What’s A Cool Fun Fact That You Know?’, 40 People Delivered Sharks like and get attracted to Heavy Metal music played underwater.

NittoPoint , pexels Report

#27

Someone Asked, ‘What’s A Cool Fun Fact That You Know?’, 40 People Delivered If you made $10,000 per day, every day since the pyramids were built around 4,500 years ago, you'd have 6% of Elon Musk's wealth.

FridayOakafor Report

#28

You don't use shock paddles on a stopped heart.

Shock paddles simply put a heart back in to a natural rhythm, they will not restart a heart if it has stopped. That's what chest compressions are for.

12thirteen14fifteen Report

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Rabbit Carrot
Community Member
1 year ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

And you actually have a very high mortality rate if you need chest compressions or a heart shock. The 5 year survival rate for both is very low.

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#29

Grass evolved 66 million years ago.

Dinosaurs went extinct 65 million years ago.

The vast majority of dinosaurs never existed at the same time as grass.

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#30

Someone Asked, ‘What’s A Cool Fun Fact That You Know?’, 40 People Delivered Cuttlefish can accurately match the color and texture of their environment despite the fact that they’re colorblind.

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80 Van
Community Member
1 year ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

That implies that other species that have camouflage capabilities do so by looking at the environment and determining their color and texture. Color blindness is irrelevant to that ability for all creatures that have that ability.

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#31

Koalas are literally smooth-brained, so much so that if you put a plate of eucalyptus leaves in front of them that have been taken off the branch, they won’t recognize them as food.

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#32

Someone Asked, ‘What’s A Cool Fun Fact That You Know?’, 40 People Delivered The Nazis planned to assassinate Winston Churchill with an explosive chocolate bar.

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80 Van
Community Member
1 year ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

They had some Oompa Loompas on standby to sing a song about it once the assassination was complete.

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#33

16⁰C and 28⁰C reversed are equal to their Fahrenheit value. So - 16 is 61f and 28 is 82f

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#34

Someone Asked, ‘What’s A Cool Fun Fact That You Know?’, 40 People Delivered Marlon Brando popularised wearing a T-shirt casually.

New_Fix6213 , wikimedia Report

#35

There are more plastic flamingo lawn ornaments in the US than there are wild flamingoes on the entire planet.

SnowDemonAkuma Report

#36

There is a plant called the California Corn Lilly that contains a drug called Cyclopamine. When animals eat it while pregnant, it can cause cyclopia (one eye). It inhibits a signaling pathway called the Sonic Hedgehog Pathway (yes, this pathway was actually named after the video game).

Rubicksgamer Report

#37

Someone Asked, ‘What’s A Cool Fun Fact That You Know?’, 40 People Delivered The only artist to ever have five albums in the US Top 20 at the same time is Herb Alpert & The Tijuana Brass.

Vestido_Amarratado Report

#38

Someone Asked, ‘What’s A Cool Fun Fact That You Know?’, 40 People Delivered Apparently turtles breathe from their booty.

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#39

Nuclear reactors are very fancy kettles.

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Kira Okah
Community Member
1 year ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

All methods of electricity generation that doesn't use direct application of driver to turbine is a kettle for a steam turbine.

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#40

Someone Asked, ‘What’s A Cool Fun Fact That You Know?’, 40 People Delivered If you fold a regular piece of paper in half 104 (from memory) times, the paper will be as thick as the entire observable universe.

SneakyMongoosee , unsplash Report

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Chinmayee Kalghatgi
Community Member
1 year ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

And if you fold a piece of paper more than 300 times you end up with a book that has more pages than atoms in the observable universe

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Note: this post originally had 96 images. It’s been shortened to the top 40 images based on user votes.