- Center for Clean Air Policy
 - Dedicated to the development of economically sound and environmentally robust solutions to both local air quality and global climate problems. - Intergovernmental Panel on Climate Change (IPCC)
- United Nations Environment Programme IPCC's three working groups and task force were estabilished to assess the scientific, technical, and socio-economic information relevant to understanding the scientific basis of risk of human-induced climate change.
- Science & Environmental Policy Project
- A nonprofit, non-partisan public policy institute dedicated to making sound science the basis for environmental policy decisions.
- Weathervane
- Electronic forum on global climate policy.
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