Modern humans first appeared about 200,000 years ago, but record keeping didn't begin until about 6,000 years ago. That means about 97% of human history is lost.
21
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
On average a woman has 4 sexual partners in her lifetime.
-143
Our Right Lungs takes more air than our left lung.
194
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
Human hair and fingernails continue to grow after death.
7
Gorillas can catch human colds and other illnesses.
205
A man's beard grows fastest when he anticipates sex.
239