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Did you know?
When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).
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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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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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Human kidneys will clean about 1 million gallons of blood in an average lifetime.
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The average office desk has 400 times more bacteria on it than a toilet.