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The human body produces and destroys 15 million blood cells every second.
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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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Asthma cases in Americans are about 75% higher today than they were in 1980.
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Aspirin may benefit 11 different cancers, including those of the colon, pancreas, lungs, prostate, breasts, and leukemia.
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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.