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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 familiar sounds of your heart are made by the heart's valves as they open and close.
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Medication errors are more common among seriously ill patients than with those with minor conditions.
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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.
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.