Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
It has been scientifically proven that stroking a cat can lower one's blood pressure!
456
Early American humans hunted car-size armadillos and used their shells for houses.
12
A person can live without food for about a month, but only about a week without water.
156
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