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The theory of plate tectonics describes the motions of the lithosphere, the comparatively rigid outer layer of the Earth that includes all the crust and part of the underlying mantle. The lithosphere(
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Injection Drug Use Helps Drive HIV/AIDS in Africa Injection drug use has long been a driving factor in the HIV/AIDS epidemic in Eastern Europe and Central Asia. But now, there are signs it's a growing problem in sub-Saharan Africa, as well. The Washi
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STEVE INSKEEP, HOST: Philadelphia is looking at a new tool to fight opioid addictions - supervised injection sites. That's where people can safely inject heroin or other opioids under medical supervision. It would be the first such site in the U.S.,
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歌词如下： Under the spreading chestnut tree, There we sit both you and me. Oh,how happy we will be! Under the spreading chestnut tree. Under the spreading chestnut tree, There we sit both you and me. Oh,how happy we will be! Under the spreading
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By Mike O'Sullivan Los Angeles 08 November 2007 November 14th is the first United Nations observed World Diabetes Day, and health experts say diabetes has reached epidemic levels in many countries, including the United States. In Los Angeles, diabet
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DAVID GREENE, HOST: The state of Arkansas has a death penalty problem. The state is rushing to execute death row inmates at an unprecedented pace this month before its supply of lethal drugs expires. The expiration date is important because it's gett
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