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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
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Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.