The Environmental Protection Agency also offers good background material on the topic. The Union of Concerned Scientists provides a full Web site on climate change. Greenpeace offers plenty of background material on global warming with a decidedly pro-green slant. Ozone Action has organized a full site on global warming, also with an environmentally friendly edge. The Sierra Club provides eco-friendly information on climate change as well.
Many sites provide points of view opposed to the treaty.
The Global Climate Coalition represents utility, mining, oil and coal interests. The American Petroleum Institute represents the oil industry's dissenting position on the global warming treaty. The Global Climate Information Project has set up a number of links to statements by congresspeople opposed to the treaty.