Modern humans first appeared about 200,000 years ago, but record keeping didn't begin until about 6,000 years ago. That means about 97% of human history is lost.
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Playing Tetris after a traumatic event can prevent the development of traumatic memories and reduce the chance of having flashbacks.
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The human brain has the capacity to store everything that you experience.
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By weight, Bone is five times stronger than steel.
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The adult human brain weighs about 3 pounds (1,300-1,400 g).
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The human brain doesn't stop developing until about 25 years old.
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Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
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Your heart will pump about 212 million liters in its lifetime.
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