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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).
Did you know?
If you could remove all of your skin, it would weigh up to 5 pounds.
Did you know?
There are approximately 3 million unintended pregnancies in the United States each year.
Did you know?
The average adult has about 21 square feet of skin.
Did you know?
The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.