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The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.
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Everyone has one nostril that is larger than the other.
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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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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.