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US Department of Ene 21 Science X network 12 EurekAlert! - Earth 6
EurekAlert 5 US Environmental Pro 4 Environmental Monito 3
Science Daily 3 US Geological Survey 3 us environmental pro 3
Environment & Energy 2 Environmental Health 2 Institute for Global 2
SciDev.Net 2 World Bank Blogs 2 Commonwealth Scienti 1
EurekAlert! 1 UN Sustainable Devel 1 UN Water 1
United Nations Envir 1 United States Depart 1