One human hair can support 3 ounces.
191
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
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
It has been scientifically proven that stroking a cat can lower one's blood pressure!
456
Human hair and fingernails continue to grow after death.
7
The average sperm cell swims at 8 inches per hour.
4