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EurekAlert 5274 Science Daily 1662 Minging.com 890
EurekAlert! - Earth 871 EurekAlert! 613 Science 518
Center for Strategic 480 RAND Corporation 265 UN Sustainable Devel 259
Imperial College Lon 255 Commonwealth Scienti 239 European Space Agenc 215
Department of Conser 184 Scientific American 172 United States Depart 161
World Resources Inst 159 UN-Habitat 157 Australian Resources 147
Global Environment F 147 World Business Counc 147