Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
The human brain has the capacity to store everything that you experience.
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Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
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 is possible for you to survive even after the removal of the spleen, the stomach, one kidney, one lung, 75% of the liver, 80% of the intestines, and almost every organ from the pelvic and groin area.
218
Pain occurs when sounds are above 130 db.
124
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
Every human spent about half an hour as a single cell.
144