The real reason so many on the left stick to the global warming theory is that they are trying to inhibit free enterprise from doing what it has to do to: pollute. That's what this ecological argument is really about: the government trying to hamper industry by using climate change as an excuse. There is no climate change as we all agree and, thus, there is no reason to stop polluting, certainly not in these economic times.
Industry needs to be free to dispense its by-products into the atmosphere and earth without limit as dictated by the market. That is the system that works. Let the money talk.