Nothing here is made up
Surprising facts, verified and explained
ONAURE collects facts that sound made up and shows you why they are real. Every entry has a short explanation and a source, so you learn the reason and not just the headline. The site has two separate zones: one where you simply…
1 196facts published
9categories
4languages
Animals
Platypuses have no stomach.
The esophagus connects directly to the intestines. Also, females "sweat" milk through their skin.
Source: Wildlife Biology
Random pick
A different fact every time you open this page. Press the button for another one.
1196 facts published
Two zones, pick yours
I just want to know the fact
The reading side. The fact is right there, with the explanation behind it and the source. Nothing is hidden and nothing is asked of you.
Browse all facts →Random fact generator
Press the button and get a surprising, verified fact. Filter by category and keep going as long…
All facts
The complete ONAURE library, newest first. Every fact has an explanation and a source you can…
Facts that sound false but are true
Our highest surprise rating: the facts people most often refuse to believe until they read the…
Categories
Nine subjects, hundreds of verified facts. Pick a subject and start reading.
Test yourself
The quiz side. The question comes on its own — the fact and the explanation only appear after you have answered.
Test yourself →True or false quiz
One statement at a time. Decide whether it is true or false, then read the explanation behind…
Multiple choice quiz
Four options, one right answer. Every question comes from a verified fact with its explanation.
10-question challenge
Ten mixed questions, true/false and multiple choice. See your score at the end and try to beat…
Facts that sound false — but are true
See all →Platypuses have no stomach.
The esophagus connects directly to the intestines. Also, females "sweat" milk through their skin.
There were about 2.5 billion T. rexes on Earth.
UC Berkeley researchers estimated 2.5 billion T. rex existed over 127,000 generations, based on body size and energy…
Domestic cats share 95.6% of their DNA with tigers.
Cats and tigers share a common ancestor and many behaviors, including hunting and territory marking.
Sharks are older than trees.
Sharks have swum in the oceans for 400 million years, while the first trees appeared 350 million years ago.
Napoleon was once attacked by rabbits.
During a hunt, domesticated rabbits mistook the carriage for food and attacked the emperor and his men en masse.
The word 'Google' originated from a spelling error.
The idea was based on the mathematical number 'Googol' (1 followed by 100 zeros), but the founders registered the…
Browse by category
See all →Animals
Surprising facts about the animal kingdom
214 factsHuman Body
The incredible human body
133 factsFood
Food curiosities
148 factsGeography
Wonders of our planet
127 factsHistory
Surprising historical events
152 factsNature
Natural phenomena
102 factsTechnology
Innovations and technology
118 factsSpace
Mysteries of the universe
92 factsScience
Fascinating scientific discoveries
110 factsMost popular
See all →Sea otters hold hands when they sleep so they don't drift apart.
The Titanic was found while searching for lost nuclear submarines.
The Darvaza gas crater, known as the 'Door to Hell', has been burning for over 50 years.
Rats laugh when they are tickled.
A solar flare equals a billion hydrogen bombs.
The human brain has more connections than stars in the Milky Way.
Recently added
See all →The bombardier beetle defends itself by firing a chemical spray at about 100 °C.
Some sea cucumbers expel their own internal organs to distract predators and then grow them back.
The Arctic ground squirrel hibernates with its body at about -3 °C, below the freezing point of water.
The archerfish hunts insects resting on leaves above the water by knocking them down with jets of water shot from its mouth.
Cuttlefish have W-shaped pupils.
The bar-headed goose crosses the Himalayas and has been recorded flying at over 7,000 metres.


