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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.
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There are approximately 3 million unintended pregnancies in the United States each year.
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The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).
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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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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.