Early American humans hunted car-size armadillos and used their shells for houses.
12
A man's beard grows fastest when he anticipates sex.
239
The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13
The human sigh acts as a physiological reset button.
23
Pain occurs when sounds are above 130 db.
123
In one day, adult lungs move about 10,000 litres of air.
11
The world's shortest man measures only 21.5 inches.
73