Having sex can make a woman look younger and more attractive due to the release of estrogen and collagen.
346
A man's beard grows fastest when he anticipates sex.
239
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
The human body contains over a billion miles of DNA.
147
Babies crawl an average of 200m a day.
212
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
One human hair can support 3 ounces.
191