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共166条，第1-20条
EurekAlert 5050 Science Daily 1799 EurekAlert! - Earth 783
EurekAlert! 602 Science 371 Imperial College Lon 186
Environmental Health 148 Environment & Energy 122 RAND Corporation 122
Scientific American 115 Minging.com 114 Center for Strategic 97
Commonwealth Scienti 93 Climate News Network 84 Convention on Biolog 84
European Space Agenc 76 Environment for Deve 72 Scripps Institution 66
Massachusetts Instit 59 World Resources Inst 59