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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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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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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.
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Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.
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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.