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The average office desk has 400 times more bacteria on it than a toilet.
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Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.
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People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
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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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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).