Reason Foundation Environment Studies
- Information, analysis and other resources advocating libertarian free-market solutions to environmental issues
- http://www.reason.org/environment/

The Heritage Foundation - Research: Energy and Environment
- Background and analysis of issues from a conservative perspective. (Part of Heritage Foundation Issues 98 project.)
- http://www.heritage.org/Research/EnergyandEnvironment/

Sierra Club's Responsible Trade Campaign
- Information, commentary and other resources about global trade and impact on the environment from environmentalist organization the Sierra Club.
- http://www.sierraclub.org/trade/