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United States Depart 47 EurekAlert 24 RAND Corporation 24
Science X network 23 Science 12 Scripps Institution 10
World Resources Inst 8 Rand Corporation 7 Scientific American 7
Department of Energy 6 US Geological Survey 6 Government of Canada 5
Minging.com 5 US Environmental Pro 5 us environmental pro 5
world meteorological 5 Environment and Clim 4 German Aerosapce Cen 4
Science Daily 4 The Associated Press 4