If you could remove all of your skin, it would weigh up to 5 pounds.
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Asthma cases in Americans are about 75% higher today than they were in 1980.
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There are more bacteria in your mouth than there are people in the world.
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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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Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.