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Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
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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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There are actually 60 minerals, 16 vitamins, 12 essential amino acids, and three essential fatty acids that your body needs every day.
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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).
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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.