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Geoscience Australia 172 European Space Agenc 142 Association of Ameri 138
SciDev.Net 72 EurekAlert 47 Environment & Energy 43
Science X network 39 UN Sustainable Devel 36 United States Depart 29
us environmental pro 23 EurekAlert! - Earth 20 Science Daily 18
Water Environment Fe 17 United Nations Envir 15 German Aerosapce Cen 13
World Resources Inst 11 Environmental Protec 9 World Wide Fund for 9
EurekAlert! 7 Minging.com 7