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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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About 3.2 billion people, nearly half the world population, are at risk for malaria. In 2015, there are about 214 million malaria cases and an estimated 438,000 malaria deaths.
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People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
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In 1864, the first barbiturate (barbituric acid) was synthesized.
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Approximately 500,000 babies are born each year in the United States to teenage mothers.