When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
A man's beard grows fastest when he anticipates sex.
239
If your DNA was stretched out it would reach to the moon 6,000 times.
256
Enamel is hardest substance in the human body.
61
Early American humans hunted car-size armadillos and used their shells for houses.
12
Your fingernails grow faster in summer.
744
Playing Tetris after a traumatic event can prevent the development of traumatic memories and reduce the chance of having flashbacks.
29
Gorillas can catch human colds and other illnesses.
205