But with the naysayers in Congress, he will have trouble making good on his promises.
Most scientists agree that global warming is real and dangerous.
Pollution from vehicles, power plants and factories is getting trapped in the atmosphere, causing a gradual warming of the planet. This phenomenon threatens dramatic climate changes, including severe floods and droughts, with potentially devastating health, social and political consequences. In Kyoto, industrialized nations agreed to cut greenhouse gases to a level 5 percent below 1990. For the United States, that would mean cutting current emissions by 7 percent. Opponents complain that will cost too much.