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The horizontal fraction bar was introduced by the Arabs.
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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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If you could remove all of your skin, it would weigh up to 5 pounds.
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About 3.2 billion people, nearly half the world population, are at risk for malaria. In 2015, there are about 214 million malaria cases and an estimated 438,000 malaria deaths.
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There are more nerve cells in one human brain than there are stars in the Milky Way.