The most affordable and politically possible way to deal with coal may be to buy the mines and turn them into parks because anything else that comes close to making coal uneconomical will result in massive, protracted litigation about compensation for a "regulatory taking." The whole legislative conversation about markets, offsets (preserving rain forests, etc.), and carbon capture and sequestration ("CCS") grows out of the fantasy that we can achieve adequate CO2 emissions reductions without shutting down all coal mines and closing many refineries. We can't. Deal with it.- Roger Chittum
Roger's reality-based views are always worth a read. Check it out.