Fresh hope for U.S. coal? (AP) It's far from clear that higher energy prices are environmentalists' friend. Though they migh eventually spur clean energy, they're doing a good bit of the opposite right now.

Today's energy prices�and just as importantly, growing concern over energy security�are driving ever-dirtier energy solutions, from Canadian tar sands, to a rush to develop shale oil and gas in the U.S., to a dash away from natural gas and back toward coal. The latest unintended consequence? America's first coal-to-liquids...