I just wanted to add one more point - any environmentalist that's really concerned about global warming and pollution should be pushing for the US to build as many nuclear power plants as possible to replace coal and oil fired plants. That would greatly reduce our greenhouse gas emissions, as well as having the nice side effect of increasing our energy independence.
Another great point that I have brought up before. We SHOULD be pushing Nuclear, and very hard. Its a no-lose proposition. Everyone wins except for the handwringers.
Fact is though, most of the hard left are Luddites, and want to see us living like Native Americans (except for the "eating buffalo" part...).