The horizontal fraction bar was introduced by the Arabs.
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Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.
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The strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.
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The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.
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Human kidneys will clean about 1 million gallons of blood in an average lifetime.
True-color view of Mars seen through NASA's Hubble Space Telescope in 1999
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Olduvai Hominin 5 (OH 5) is a hyper-robust member of Australopithecus boisei.