accept that. do you believe that the climate is changing? and that you re not convinced that human activity is causing it? that is. i want to focus on one part of fred upton s answer when he says that the clean air act did not give the epa the authority to regulate greenhouse gases. well, it s interesting because obviously when it was created in 1990, graen house gases were not an issue at all. this is going to be decided in the courts. it s interesting that waxman has a letter from one of my successors, steven johnson, who is a scientist and was of the epa under bush, said that the epa should declare it as a health hazard. frankly, epa would much rather have congress act on this. they are the ones who should set the rules. they set up the agency, the clean air act. this is their responsibility and