The US Climate Action Partnership is pretty much what it sounds like – a group calling for mandatory caps on greenhouse emissions.

ACACIA - A Consortium for the Application of Climate Impact Assessments - ACACIA uses the best available scientific tools and knowledge to answer the climate-related questions of sponsors from the industrial, business and policy communities.

The Alliance for Climate Protection - Campaign group which aims to cut emissions and reduce global warming. Information about the challenge and how people can help.

Almanac of Policy Issues: Global Warming - News, background information and links on global warming, climate change, and the 1997 Kyoto Protocol.

AOL: Earth Focus on Global Warming - Information about global warming and climate change and what individuals can do to help the environment.

Asia Pacific Network on Climate Change - A clearing house for climate change issues sponsored by the Japanese Ministry of the Environment. Highlighting articles, conference schedules, and related resources.

BBC Climate Change Portal - Starting point for current news items and discussions on the topic of climate change.

BBC News: Global Climate Change - An analysis of the science and other issues behind the climate change debate, from BBC News Online.

BBC Science - Climate Change - Key points, articles, pros and cons, and resources regarding climate change.

A Beginner's Guide to Global Warming - Written by a scientist at The Woods Hole Research Center, these pages describe the scientific evidence, the culprits, the skeptics and the probable outcome of a world signicantly changed by human-induced climate change.

Bush's CO2 Emissions Flip-Flop - Cartoons about President Bush's reversal of stance on carbon dioxide emissions.

The California Climate Action Registry - Organization created by the State of California to encourage companies, government agencies and other organizations to voluntarily measure and report their Green House Gas emissions. Provides information about the program.

California Global Warming Campaign - Useful and timely information about climate change and California.

Capacity for Climate Protection - Project focussing on climate protection and funding environmental NGOs in Central and Eastern Europe. Includes a profile, calendar of events, publications, and information on monitoring and mechanisms.

Climate Action Network Australia - Non-profit environmental group dedicated to fighting climate change and finding solutions to the problem. Includes news and current programs. Climate Action Network South Asia - A global network of over Non-Governmental Organizations working to promote government and individual action to limit human induced climate change to ecologically sustainable levels.

Climate Ark - Climate change news & information portal and archive dedicated to promoting policy that addresses Global Climate Change through reductions in carbon emissions, energy conservation, alternative energy sources and ending deforestation.

Climate Change - An overview of climate change, theories and perspectives, and notable weather patterns.

Climate Change: An Overview - A discussion of the certainties and uncertainties behind the science of climate change and the impact of greenhouse gasses.

Climate Change Debate - Climate change and global warming science, government policy, energy technology, cost and benefits debated via an unmoderated, uncensored listserve, plus research aides.