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The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."
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Vaccines prevent between 2.5 and 4 million deaths every year.
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In 1864, the first barbiturate (barbituric acid) was synthesized.
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Historic treatments for rheumatoid arthritis have included gold salts, acupuncture, a diet consisting of apples or rhubarb, nutmeg, nettles, bee venom, bracelets made of copper, prayer, rest, tooth extractions, fasting, honey, vitamins, insulin, snow collected on Christmas, magnets, and electric convulsion therapy.
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Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.