• Biodiversity Hotspots
• EE Link Endangered Species Page
• Endangered Species Home Page (U.S. Fish & Wildlife Service)
• Ozone Depletion
• Rainforest Action Network
• Resource Conservation District, Greater San Diego County
• Sierra Nevada Ecosystem Project

Energy

• Mike Brown's Alternate Energy Index
• By Design (fossil fuel descriptions)
• California Solar Center
• Department of Energy
• Energy Efficiency and Renewable Energy (U.S. Dept. of Energy)
• Andy Darvill's Energy Resources
• Florida Solar Energy Center
• Free Energy. Zero Point. Cold Fusion
• Free Energy News
• Hydrogen Now
• International Energy Outlook With Projections
• National Wind Technology Center - Wind Resource Information
• Natural Gas Vehicle Coalition
• Natural Gas Supply Association
• OTS Heavy Oil Society (Oilfield Technical Society)
• Renewable Energy (Oregon Dept. of Energy)
• Renewable Energy Sources
• World Coal Institute
• United Mine Workers of America: What Coal Miners Do

• Alexandria Digital Library
• Amazon Watch
• Border EcoWEB (U.S.-Mexico)
• California Coastal Records Project
• California Environmental Resource Evaluation System
• Center for Bioenvironmental Research (Tulane Univ.)
• DataPlace (demographic data)
• Environmental Defense
• Environmental History of Latin America - Bibliography
• Environmental Protection Agency (EPA)
• Environmental Sites on the Internet 
• Environmental Think Tank (World Resources Institute)
• European Environment Agency
• Global Monitoring Division (NOAA/Earth System Research Laboratory)
• Information Center for the Environment 
• National Biological Information Infrastructure (NBII)
• National Library for the Environment
• Natural Resources Defense Council
• The Rachel Carson Homestead
• Southern Oregon Bioregions Collection
• Surfrider Foundation (California coastal water quality issues) 

• Scorecard (facts on pollutants within communities)

• Toxic Release Inventory (TRI) Program (U.S. EPA)