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EurekAlert 1176 Science Daily 323 RAND Corporation 297
United States Depart 263 U.S. Energy Informat 231 Science 214
US Environmental Pro 156 The Associated Press 111 US Geological Survey 83
Minging.com 76 Convention on Biolog 56 National Science Fou 50
Department of Energy 38 Scientific American 37 NASA Global Climate 32
World Resources Inst 32 Seismological Societ 19 Woods Hole Oceanogra 17
American Geophysical 15 Environmental Protec 15