Honestly, who cares about this guy? You are either convinced by the total concensus of experimentation and observation spanning the global scientific community...or you're convinced by the oil-funded rhetoric which is based on exactly no experimentation or observation. One physicist doesn't matter.

And to respond to timothyemerson, the first thing we can do about global warming is to get non-scientists to acknowledge it exists. Although I do know how hard it is for people to stop foaming at the mouth about taxes (even though raising taxes need not be a part of the solution.)