Mushrooms are more closely related to humans than they are to plants.
47
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
By weight, Bone is five times stronger than steel.
417
A man's beard grows fastest when he anticipates sex.
239
It takes about 20 seconds for a red blood cell to circle the whole body.
102
The average sperm cell swims at 8 inches per hour.
4
The human brain doesn't stop developing until about 25 years old.
102
