If your DNA was stretched out it would reach to the moon 6,000 times.
256
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
Research has determined that most people are happiest at 7:26pm on a Saturday night.
69
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
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
There are times when you're walking that the pressure on your feet exceeds your body weight, and when you're running, it can be three or four times your weight.
62
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
31