Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
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You see your nose at all times, your brain just chooses to ignore it.
30
In 1996, research found that having excessive body hair is linked to higher intelligence.
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For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
There are about 1,400 different species of bacteria in your belly button.
10
The adult human brain weighs about 3 pounds (1,300-1,400 g).
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Your body is creating and killing about 2.4 million red blood cells per second.
17