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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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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
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Asthma cases in Americans are about 75% higher today than they were in 1980.
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The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).
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Alcohol acts as a diuretic. Eight ounces of water is needed to metabolize just 1 ounce of alcohol.