- Sierra Club (20)
Find sites for Sierra Club, an environmental organization founded by the American conservationist John Muir. Sites include organization information, educational campaigns, and outdoor adventures conducted by the America's oldest grassroots environmental organization. Also find sites for its various chapters and community outreach programs.
- Union of Concerned Scientists (UCS)
Nonprofit alliance of scientists and citizens working for a healthy environment and a safe world, UCS researches and promotes clean energy and transportation technologies.
- Friends of the Earth United States
National, nonprofit advocacy organization dedicated to protecting the planet from environmental degradation.
- Environmental Defense
Combines science, economics, and law to find economically sustainable solutions to environmental problems.
- Physicians for Social Responsibility (2)
- National Council for Science and the Environment
Working to improve the scientific basis for making decisions on environmental issues.
- Public Interest Research Groups (PIRG) (22)
- Save Our Environment Action Center
Harnessing the power of the Internet to increase public awareness and activism on today's most important environmental issues.
- National Environmental Education & Training Foundation (NEETF)
Addresses issues such as health, clean water, educational excellence, and global competitiveness through environmental learning.
- Orion Society, The
A nonprofit environmental education organization, grassroots support network, and publisher of Orion and Orion Afield.
- Republicans for Environmental Protection (REP) America
National grassroots organization of Republicans who feel that a healthy economy can and must be achieved without doing harm to our environment.
- Sustainable Style Foundation
Offers information, resources, and innovative programs that promote sustainable living and sustainable design.
- Environmental Defense Fund (1)
- Action Network
Online activism gateway for leading environment, health, and population advocacy organizations.
- American Public Information on the Environment
Dedicated to developing and administering action programs which help build a more informed, environmentally responsible, activist citizenry in the United States.
- Cooperative Conservation
Cooperative Conservation celebrates the cumulative cooperative green efforts of landowners, communities, conservation groups, industry, and governmental agencies. Site features environmental news, laws, and forms, as well as training, funding, and volunteering opportunities.
Supporting candidates who support a healthy environment. Features an outline of the Bush record on the environment and current news.
- Americans for Energy Independence
Nonprofit organization dedicated to an energy-independent America by 2025.
- National Environmental Trust
Action network concerned with global warming, clean air, children's environmental health, and the preservation of heritage forests.
- America's Environment At Risk
Details current threats to America's environment, the powerful interests behind those threats, and describes common-sense solutions to protect the environment.