Use this site to calculate how much you and your household are contributing to the greenhouse gases implicated in global warming. Then, calculate the differences small changes can make.
Named for the amount of carbon (350 parts per million) considered safe for long-time sustainability on earth. We are now at 400 ppm. This is a very active advocacy group.
National, state and local policy information; science of global warming; information on current legislative activity. See the Climate 411 blog for up-to-the-minute news.
