Early American humans hunted car-size armadillos and used their shells for houses.
12
Having sex can make a woman look younger and more attractive due to the release of estrogen and collagen.
346
Mushrooms are more closely related to humans than they are to plants.
47
Tigers can see 6 times better at night than humans.
305
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
Our brains have a negativity bias and will remember bad memories more than good ones.
15
In one day, adult lungs move about 10,000 litres of air.
11