Cleaner coal is like "cleaning up" the CIA. It's a lie, and a waste of time.   Another band of dinosaurs is the nuclear industry -- waste disposal is not solved, uranium mining continues to despoil the landscape, and proliferation (cf. Iran, India, Pakistan, etc.) continues on its merry pace. Not to mention the big issue for all you free marketers: not one single nuclear power plant will ever be built again without massive government subsidy. They are big and stupid and last about 40 years. Meanwhile, with a similar subsidy, and perhaps a fraction of the billions of dollars being spent on the military protecting the precious oil traffic, and some of what goes to a a coal industry that also the beneficiary of heaps of money (not to mention the ability to sidestep environmental regulation), North America could go green in ten years (Al Gore is right).
yours,

Peter T.