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Did you know?
Your heart beats over 36 million times a year.
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Asthma cases in Americans are about 75% higher today than they were in 1980.
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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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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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The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.
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