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Did you know?
Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
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Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
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The longest a person has survived after a heart transplant is 24 years.
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There are 60,000 miles of blood vessels in every adult human.
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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).