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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

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Walt Disney helped combat malaria by making an animated film in 1943 called The Winged Scourge. This short film starred the seven dwarfs and taught children that mosquitos transmit malaria, which is a very bad disease. It advocated the killing of mosquitos to stop the disease.

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In 1844, Charles Goodyear obtained the first patent for a rubber condom.

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Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.

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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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