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
On average, there's 100 billion neurons in the human brain.
83
On average a woman has 4 sexual partners in her lifetime.
-143
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
If the human eye was a digital camera, it would have 576 megapixels.
25
The average person will go on a date at least 100 times before they finally marry.
33
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89