If you care about global warming, you've got to care about coal. Unlike oil and gas -- for which North American production is in decline -- there's plenty of coal left on American soil. And while some energy companies and promoters of "energy independence" see this as an unqualified good, those of us who see most issues through the lens of climate change see the "wall of coal" as one of the scariest things out there.
That's why California's latest foray into climate policy is so heartening: