 They don't have definitive proof, period, in science. I'm a student of the philosophy and history of science, and I know that the scientific method has not been applied in such a way as to prove that carbon dioxide is causing the Earth to warm. But they're the party of science. They're the science people and the organ harvesting people and all of that stuff. Come on, Dr. Patrick Moore of the Canadian Everything Environmental of Greenpeace. You can't