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Did you know?
The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).
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Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.