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Science X network 432 Center for Strategic 333 EurekAlert 302
Organization for Eco 223 International Energy 145 Canadian Institute o 114
world meteorological 101 EurekAlert! - Earth 95 Department of Energy 58
Australian Resources 52 European Space Agenc 51 World Meteorological 51
Minerals Council of 44 Minging.com 42 Institute for Global 32
Wetlands Internation 31 Center for Strategic 27 SciDev.Net 23
German Aerosapce Cen 19 US Department of Ene 17