Or he doesn't believe it. He and others may or may not know much about science and climate change, but there are many smart, educated people who cannot accept that their own viewpoint could be wrong. They ignore the fact that for over 30 years we've been hectored with dire/drastic projections concerning global warming and climate change that haven't been close to being true, and fully expect all of us to spend enormous amounts of money that we don't have on projects that might not even make a difference in solving the problems.