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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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The horizontal fraction bar was introduced by the Arabs.
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Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.
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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
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Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.