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Vaccines prevent between 2.5 and 4 million deaths every year.
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Everyone has one nostril that is larger than the other.
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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.