The human eye blinks an average of 4,200,000 times a year.
233
Mushrooms are more closely related to humans than they are to plants.
47
Every human spent about half an hour as a single cell.
144
Gorillas can catch human colds and other illnesses.
205
Enamel is hardest substance in the human body.
61
Early American humans hunted car-size armadillos and used their shells for houses.
12
The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13