Mushrooms are more closely related to humans than they are to plants.
47
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
Human hair and fingernails continue to grow after death.
7
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
You can't tickle yourself.
29
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
Pain occurs when sounds are above 130 db.
124