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Science X network 242 EurekAlert 90 EurekAlert! - Earth 41
European Space Agenc 6 SciDev.Net 6 US National Scientif 6
world meteorological 6 Center for Strategic 5 Commonwealth Scienti 5
Minging.com 5 American Geophysical 3 Centre national de l 3
Department of Energy 2 US Geological Survey 2 Canadian Institute o 1
National Center of A 1 US Department of Ene 1