- United States Geological Survey - geology, hydrology, minerals, mapping
- Agriculture Network Information Center - forestry, earth and environmental sciences, plant sciences
- National Oceanic and Atmospheric Administration - weather, climate, coastal issues, fisheries
- Montana Natural Resources Information System - water resources, natural heritage, geography
- Northwest Geological Society - forum for dialogue
- Galaxy.com Geosciences - links to sub-disciplines
- United States Department of Agriculture Soil Survey Division
- WWW Virtual Library: Environment - links
- NASA Earth Observatory - earth science and environmental subject areas
- Center for International Earth Science Network (Columbia University)
- eERL - National Science Foundation’s electronic environmental resources library
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