Early American humans hunted car-size armadillos and used their shells for houses.
12
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
Gorillas can catch human colds and other illnesses.
205
Due to the angle at which the optic nerve enters the brain, staring at a blue surface during sex greatly increases the intensity of orgasms.
252
Our brains have a negativity bias and will remember bad memories more than good ones.
15
Your fingernails grow faster in summer.
744
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
31