Gack! I'm so far behind on blogging I don't know where to begin.
Here's something: A while back I was casting about for good commentary on the upcoming Supreme Court CO2 case. This piece on Seed isn't great, but it does have some insight, like so:
A victory for the environmentalists would give the federal government the power to regulate CO2 emissions -- and the power to decide how strictly or loosely to do so. On the other hand, an EPA victory hands this power back to the states, including the petitioners -- who would then have the authority to set their own standards. Paradoxically, a ruling against the petitioners might ultimately result in the major emissions restrictions they seek.