- 350 Madison
- 350.org: an International Movement Focused on Global Warming
- Aldo Leopold Nature Center
- Alliance for the Great Lakes
- Alternative Energy Sources
- Audubon Society
- Climate Change Resource - GWU
- CO2gether: Monitoring Your Carbon Footprint
- Earth911
- The Ecologist
- EnviroGadget
- Environmental Protection Agency
- EWG.org
- Frugally Sustainable
- Great Lakes Water Wars
- GreenBiz
- Green Car Report
- Green Living Ideas
- Insteading: Homesteading-Sustainabiity
- Mindful Momma
- Kids & the EnviroMother Nature Networknment
- National Tapwater Quality Database
- Nature Conservancy
- RecycleNation
- Recycling 101
- Save Our Environment
- Story of Stuff
- Treehugger
- Wisconsin Environment: a Statewide Citizen-based Environmental Organization