A person can live without food for about a month, but only about a week without water.
156
A human being loses an average of 40 to 100 strands of hair a day.
133
A man's beard grows fastest when he anticipates sex.
239
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
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
Playing Tetris after a traumatic event can prevent the development of traumatic memories and reduce the chance of having flashbacks.
29