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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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Cyanide works by making the human body unable to use oxygen.
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Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.
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Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.
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Medication errors are three times higher among children and infants than with adults.