Early American humans hunted car-size armadillos and used their shells for houses.
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Your heart will pump about 212 million liters in its lifetime.
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If the human eye was a digital camera, it would have 576 megapixels.
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The human brain has the capacity to store everything that you experience.
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It takes about 20 seconds for a red blood cell to circle the whole body.
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Gorillas can catch human colds and other illnesses.
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It has been scientifically proven that stroking a cat can lower one's blood pressure!
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