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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).