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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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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.
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Blood is approximately twice as thick as water because of the cells and other components found in it.
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Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.
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Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).