Earwax has antibacterial properties and helps protect the ear canal.
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Your brain can store the equivalent of millions of gigabytes of information.
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The human body is about 60% water.
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Your small intestine is about 20 feet long — about four times your height.
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The human brain continues developing into your mid‑twenties.
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An African elephant's ears help regulate its body temperature.
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Your bones constantly rebuild themselves.
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Your senses are limited.
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Stomach acid is strong enough to dissolve razor blades.
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