On average a woman has 4 sexual partners in her lifetime.
-143
The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
Early American humans hunted car-size armadillos and used their shells for houses.
12
You can't tickle yourself.
29
The average sperm cell swims at 8 inches per hour.
4

Mushrooms are more closely related to humans than they are to plants.
47
Human hair and fingernails continue to grow after death.
7