Early American humans hunted car-size armadillos and used their shells for houses.
12
Every human spent about half an hour as a single cell.
144
Research has determined that most people are happiest at 7:26pm on a Saturday night.
69
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
The average sperm cell swims at 8 inches per hour.
4
If the human eye was a digital camera, it would have 576 megapixels.
25
Playing Tetris after a traumatic event can prevent the development of traumatic memories and reduce the chance of having flashbacks.
29
Only humans shed emotional tears.
331