Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
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A human brain produces as many as 12,000 to 50,000 thoughts per day, depending on how deep a thinker a person is.
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If your DNA was stretched out it would reach to the moon 6,000 times.
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Our Right Lungs takes more air than our left lung.
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The human brain uses approximately as much energy as a 10 watt light bulb.
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Cats have a weak sense of taste. They have only 473 tastebuds, humans have 9,000.
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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.
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Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
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