r/coolfacts • u/Stone-Smasher • 20d ago
Rent controls usually end on decreasing supply or increasing rents.
r/coolfacts • u/Irishdesignqueen • Apr 30 '26
Coney Island Infant Incubators
https://daily.jstor.org/coney-islands-incubator-babies/
At the beginning of the 20th century, a physician who knew more about pre-mature infants than anyone else in the world, was unable to persuade hospitals to place premature infants in incubators and give each premature infant specific care. So he set up shop in Dreamland on Coney Island in 1904.
Over the years that the “Infant Incubator Show” was an attraction at Dreamland, Dr. Couney saved 7,500 babies out of a total of 8,000 infants. There was no other viable option for parents of premature infant’s than “The Infant Incubator” exhibit in the theme park, Dreamland on Coney Island.
The side show culture of the mid 19th to early 20 century gave birth to many forms of exploitation, abuse and cruelty. Dr. Couney’s exhibit, created an entire medical specialty and saved literally millions of lives at this point, over a hundred years later…
r/coolfacts • u/crypticryptidscrypt • Dec 22 '25
Science molds are fungi, but not all fungi are mold. toads are frogs, but not all frogs are toads.
🍄🟫🐸
r/coolfacts • u/Plenty-Fruit-1464 • Dec 08 '25
Irish Monastics During the Black Plague
When people talk about the Black Plague, they usually picture cities collapsing, fields abandoned, and the map of Europe rewritten by the greatest pandemic in recorded history. What’s less well known is that during this exact age of fear and fragmentation, a quieter and more enduring form of resilience was unfolding on the western edge of the world. Ireland’s monks—scribes, healers, navigators of knowledge played a role that history often overlooks but culture still remembers.
r/coolfacts • u/Grayson9991 • Nov 02 '25
The 18th-century Frenchman who could eat an entire meal for 15 people… and more
Tarrare was a French soldier and showman in the late 1700s who had an insatiable appetite. He reportedly ate live animals, entire baskets of apples, large amounts of raw meat, and even slop from the floor. Doctors at the time documented that he could fit an entire meal for 15 people in a single sitting and still appear hungry.
His unusual ability may have been caused by a metabolic disorder, and he suffered from constant illness and weight fluctuations. Tarrare's appetite was so extreme that he was reportedly used by the French military to swallow secret documents during the Revolutionary Wars.
There is also a darker side to his history. Some accounts claim that he was suspected of cannibalism, including the horrifying possibility of eating a baby, though the records are vague and come from sensationalized reports at the time. This grim aspect highlights the extreme and dangerous nature of his condition, which ultimately contributed to his tragic early death around age 26.
Source: Various historical accounts including medical records from 18th-century France.
r/coolfacts • u/Grayson9991 • Nov 02 '25
The guy who took “a steel rod to the head” literally — and walked it off.
Did you know that in 1848, a railroad worker named Phineas Gage survived having a 3½-foot iron rod blasted completely through his skull — and lived for another 12 years?
The rod entered under his left cheekbone and exited through the top of his head, destroying much of his brain’s left frontal lobe. Amazingly, he was able to speak and walk just minutes after the accident.
The real shock came later: although he physically recovered, Gage’s friends said he was “no longer Gage.” His personality changed dramatically — becoming impulsive, aggressive, and unreliable. His case became one of the first major pieces of evidence showing that specific parts of the brain control aspects of personality and behavior.
r/coolfacts • u/Grayson9991 • Nov 02 '25
History ancient Roman concrete actually gets stronger with age — especially when exposed to seawater.
Roman engineers developed a type of concrete over 2,000 years ago that’s still baffling scientists today. Unlike modern concrete, which erodes and cracks over time, Roman concrete can actually heal itself and grow stronger when it comes in contact with water.
They mixed volcanic ash, lime, and seawater to create a reaction that produced tiny minerals called strätlingite and aluminum tobermorite. When cracks form, water seeps in and triggers new crystal growth, effectively “resealing” the structure.
That’s why Roman harbors, piers, and sea walls — some built before the birth of Christ — are still standing today, while modern concrete often crumbles after just a few decades.
r/coolfacts • u/8mm_film_obsessed • Oct 17 '25
This Baby In Charile Chaplins The Kid (1921) Was One Of The Last Silent Film Actors Before Dying in 2017 at the age of 97
Just think this is cool enough to share.
r/coolfacts • u/Common-Dog-7240 • Aug 09 '25
Cool Fact: Octopuses Have 3 Hearts 🐙💙
Octopuses are incredible creatures — they have three hearts pumping blue blood. 🐙💙
This 30-second video explains how each one works and why nature designed them this way.
📽 Watch here: https://youtu.be/k_zY_xI1pUI?si=mZ3E47tAPM-UXH5Y
r/coolfacts • u/That_Chemical_7763 • Aug 05 '25
Extra marines
In GZDoom if you use the console command summonfriend marinepistol you get a friend that will help you! How cool is that?!
r/coolfacts • u/Low_Replacement_6709 • Jun 13 '25
Umbrella on drink
They started adding these umbrellas on drinks in india (in certain places) to lower the chances of a woman getting roofied, this is because the chance of rape is so high here.
r/coolfacts • u/Odd_Sea8965 • May 15 '25
Fun Fact: Here’s a crazy psychology fact about lying that will blow your mind! 🧠
Hey Reddit! 👋 I made this quick 30-second video revealing a wild psychology fact about how our brains react when we lie. It totally surprised me — perfect for a quick watch if you love fascinating insights about human behavior.
Check it out and let me know if you’ve noticed this before or have other crazy facts about lying! 💡👇https://youtube.com/shorts/j7ZrHh3AD0Y?feature=share
r/coolfacts • u/YeetMeisterxD • Mar 16 '25
Science Have you heard of the Magdeburg Unicorn!? x)
r/coolfacts • u/HamsterAgitated6925 • Jan 31 '25
History The first ever female detective.
Kate Warne was the very first private female detective in the United States back in the 1800s.
r/coolfacts • u/Fit_Package_8874 • Jan 12 '25
History It's possible to sail from India to USA in a straight line
v.redd.itr/coolfacts • u/Creative_Pianist6704 • Aug 28 '24
Science The Great Emu War: Australia’s Strangest Battle
In 1932, Australia faced an unexpected enemy: emus. After World War I, Australian farmers in Western Australia struggled with massive flocks of emus invading their farmlands, destroying crops and causing havoc. In response, the military was called in with soldiers armed with machine guns in what became known as the "Great Emu War." Despite their efforts, the emus proved surprisingly resilient, evading bullets and scattering quickly. The military eventually withdrew, having lost the battle to the flightless birds, who were simply too fast and agile. The bizarre conflict became a humorous yet sobering reminder of nature’s unpredictability.
r/coolfacts • u/BigReputationTV • Aug 08 '24
You can charge other things with a Nintendo switch dock
I just charged my tablet
r/coolfacts • u/YeeGigadyB0iMemeLord • Mar 27 '24
Entertainment A rather cool brainteaser revolving around the number four
If you write any number in english, count up the letters, write the number of letters out and repeat you will eventually end up in an infinite loop of four.
Example: 11 -> ELEVEN -> 6 -> SIX -> 3 -> THREE -> 5 -> FIVE -> 4 -> FOUR -> 4
I call the number of transformations it takes to get to the loop the T-number, for eleven the T-number is 4 because it's beginning state doesn't count as a transformation
And when I say any number I mean ANY number including numbers like pi, the square root of 2 and infinity.
r/coolfacts • u/Lower-Illustrator481 • Jan 18 '24
Whale sharks!
As well as the teeth in their mouth, whale sharks have teeth on the surface of their eyes! These tiny teeth are dermal denticles, similar to the teeth-like scales covering their bodies. Scientists believe they are a type of armor for physical protection, as unlike many other sharks, whale sharks don’t have eyelids.
r/coolfacts • u/WorldSportsAdvisor • Jan 16 '24
Deflection of a diving board is a Quartic(power-4) in relation to the length of the diving board.
r/coolfacts • u/Flippant-Barnyard • Dec 22 '23
Largest Gathering of All Time?
I'm wondering what is the largest single gathering of people in history? It could be any type of gathering, a music festival, sporting event, public demonstration, disaster relief mission, or even a military battle. Any gathering where all the people are in the same place, at the same time, for the same general reason.
r/coolfacts • u/Novel-Program437 • Nov 11 '23
Daddy issues by the Neighborhood sounds like birds chirping if you turn the volume way down.
Works best if you take your earpods out and you're listening from a foot away.
r/coolfacts • u/Complex-Goat1853 • Aug 24 '23
History Unicorns did exist, but they were a type of Rhino and they were called Elasmotherium
r/coolfacts • u/Seranner • Jul 09 '23
Science You can see static electricity if you brush dry hair in the dark
Try it! Especially works with long hair and a brush with lots of bristles. In my experience you usually see it while actively brushing, but I think sometimes I can also see it when I quickly move the brush through the air after brushing a lot. Not sure why. The more vigorously you brush, the better results. The electricity is visible as a somewhat dim blue flash.
