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Author Question: To adjust the speed of a planet, Ptolemy supposed that Earth was slightly off center and that the ... (Read 32 times) |
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The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."
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Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.
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Approximately 500,000 babies are born each year in the United States to teenage mothers.
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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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ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.