The human body contains over a billion miles of DNA.
147
Gorillas can catch human colds and other illnesses.
205
A man's beard grows fastest when he anticipates sex.
239
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
The human brain doesn't stop developing until about 25 years old.
102
Your fingernails grow faster in summer.
744