Your left lung is slightly smaller than your right to make room for your heart.
Fact #4602
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Your brain can store the equivalent of millions of gigabytes of information.
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The human body contains trillions of cells.
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Stomach acid is strong enough to dissolve razor blades.
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The brain begins to suffer damage after about 5 minutes without oxygen.
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Humans can survive weeks with minimal calories.
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Humans can survive with only one functioning kidney.
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People can survive extreme dehydration briefly.
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The cornea of the eye has no blood vessels — it gets oxygen directly from the air.
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