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EurekAlert! 220 World Business Counc 211 US Department of Ene 182
Science Daily 161 The Associated Press 120 German Aerosapce Cen 101
Environmental Monito 95 UK Environment Agenc 77 Critical Zone Explor 75
SciDev.Net 72 European Space Agenc 71 Department of Conser 61
Imperial College Lon 60 Science 59 World Wide Fund for 58
Minging.com 57 World Resources Inst 54