According to Judith Curry […] we just don’t know. […] For the last 18 years, the global temperature has been level. Hasn’t gone up, hasn’t gone down. We don’t know what’s going to happen for the next 18 years. It could go up; it could go down. What we need to do is figure out how to plan so that whatever happens, we’re doing something sensible. The clean power plan itself is problematic in that it costs so much money, and will upset some of the work we do on our electric grid to such a degree that we need to have enormous confidence that the kind of changes the EPA currently wants make good sense. For example, if we want to get rid of carbon, one of the best solutions would be to go to nuclear energy. The science is still out. I’m a Ph.D. scientist, and people say ‘well, you’re a skeptic’ and my answer is ‘well, all scientists are skeptics. That’s what being a scientist is.’ And, so when you hear a consensus saying ‘gee, we think this is a big problem,’ and then you actually look at the real science, and you find out, gosh, the temperature has not gone the way we predicted it would, we have to go back and ask ‘how are our assumptions doing? Are we really right?’ And when we’re talking about the size of investment we’re talking about, we need to have a great deal of confidence. What we have though are opportunities to make sensible changes. […] What we need to do in the final call is have a good public discussion about this. And, when you do, you find people are not willing to go any further than they have to because of the other expenses in life.