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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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Everyone has one nostril that is larger than the other.
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People often find it difficult to accept the idea that bacteria can be beneficial and improve health. Lactic acid bacteria are good, and when eaten, these bacteria improve health and increase longevity. These bacteria included in foods such as yogurt.
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There are more nerve cells in one human brain than there are stars in the Milky Way.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.