Facts that sound false but are true — Page 5
Our highest surprise rating: the facts people most often refuse to believe until they read the explanation. Every one of them is documented.
1017 facts
Axolotls can regenerate their limbs, spinal cord, and even parts of their brain.
These remarkable salamanders can heal perfectly without any scarring, making them one of the most studied animals in…
Mercury has water ice at its poles despite being closest to the Sun.
Deep craters at the poles are permanently shadowed from the Sun's rays, keeping temperatures low enough for ancient…
Japan has more registered pets than children under the age of 15.
Due to a declining birth rate and an aging population, the number of cats and dogs as companions has vastly…
Beethoven used a metal rod to feel the music.
After becoming completely deaf at age 40, Ludwig van Beethoven held a metal rod between his teeth and pressed it…
The longest year in human history lasted 445 days.
In 46 BC, Julius Caesar introduced the Julian calendar and, to correct accumulated discrepancies, the year was…
The human body is made up of about 7 octillion atoms.
This incredibly massive number (7 followed by 27 zeros) highlights the sheer microscopic complexity and scale of…
In the 18th century, pineapples were rented out as dinner party centerpieces.
They were incredibly rare and expensive in Europe. Hosts would rent one just to display it for a dinner party to show…
Kopi Luwak, one of the world's most expensive coffees, is made from beans eaten by civets.
The civet eats the coffee cherries, and the beans pass through its digestive tract. Enzymes in the stomach alter the…
The coldest known natural place in the universe is the Boomerang Nebula.
Located 5,000 light-years away, its temperature is just 1 Kelvin (-272°C or -458°F), which is even colder than the…
The term 'OMG' (Oh My God) was first used in writing in 1917 in a letter sent to Winston Churchill.
Admiral Lord Fisher wrote it to Churchill to express his shock about a new order of Knighthood, showing that internet…
A chameleon's tongue can extend up to twice the length of its body in a fraction of a second.
It uses a specialized muscle and incredible elastic energy to shoot its tongue out at high speed, catching…
Human DNA is so long it could go to the Sun and back hundreds of times.
If we stretched all the DNA from a single human cell, it would be about 2 meters long. Considering the 37 trillion…
Chocolate was used as currency by the Maya.
The Maya used cocoa beans as currency for exchange. A rabbit was worth about 10 beans, and a slave could cost 100…
In some deep-sea anglerfish species, the male fuses to the female and slowly dissolves, becoming a permanent sperm-producing parasite.
Since finding a mate in the vast darkness of the deep ocean is extremely difficult, the tiny male bites the female…
Tehran, Iran, is sinking at an alarming rate.
Satellite measurements show that some parts of Tehran are sinking about 25 centimeters per year. The subsidence is…
A jellyfish is considered biologically immortal.
The Turritopsis dohrnii, a small jellyfish, can reverse its life cycle to the polyp stage when stressed or injured…
A black hole can 'burp' after devouring a star.
Astronomers observed a black hole emitting a jet of matter years after it destroyed a star. This phenomenon is…
There are more microorganisms in a teaspoon of soil than people on Earth.
Millions of species and billions of organisms — bacteria, algae, microscopic insects, earthworms, fungi — represent…
The gut has its own independent nervous system.
The gut's "second brain" contains over 100 million neurons and can function independently from the brain.
Humans are technically capable of producing venom.
All reptiles and mammals have that capability. Humans have the necessary genetic tools — it depends on evolution…
The human stomach has acid strong enough to dissolve metal.
Stomach hydrochloric acid has pH 1-2, similar to battery acid. It's strong enough to corrode zinc and iron.
The Sahara was a tropical ocean 50 million years ago.
Marine fossils found in the Sahara desert confirm the region was covered by a sea.
Hot water freezes faster than cold — Mpemba Effect.
Discovered by a Tanzanian student in the 1960s, the phenomenon is still not fully explained by science.
Oysters can change sex.
Many species are sequential hermaphrodites, changing sex depending on water temperature and reproduction needs.