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German Aerosapce Cen 32 Science X network 10 RAND Corporation 9
Center for Strategic 8 National Academies P 7 EurekAlert 6
Scripps Institution 4 United States Depart 4 American Meteorologi 3
Rand Corporation 3 US Department of Ene 3 Department for Busin 2
National Center of A 2 National Centers for 2 Science Daily 2
Environmental Protec 1 EurekAlert! 1 European Space Agenc 1
US Geological Survey 1