Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
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Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
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If your DNA was stretched out it would reach to the moon 6,000 times.
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Fingers prune underwater not because of them absorbing the water or washing away the oil, but because of an evolutionary trait caused by the brain to enhance the grip of your fingers underwater.
24
If you are cold you are more likely to be hungry because you use energy to keep warm.
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A person can live without food for about a month, but only about a week without water.
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Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
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