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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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Everyone has one nostril that is larger than the other.
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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
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In the United States, congenital cytomegalovirus causes one child to become disabled almost every hour. CMV is the leading preventable viral cause of development disability in newborns. These disabilities include hearing or vision loss, and cerebral palsy.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.