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Did you know?
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 familiar sounds of your heart are made by the heart's valves as they open and close.
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Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
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The top five reasons that children stay home from school are as follows: colds, stomach flu (gastroenteritis), ear infection (otitis media), pink eye (conjunctivitis), and sore throat.
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The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."