Geo-engineering (yes, it's what you think)

The Gristmill has a breathtaking but informative piece on geoengineering by a futurist named Jamais Cascio. That's large-scale human intervention with the goal of reducing global warming. There are, apparently, two major types under consideration: albedo management (which deals with the earth's reflectivity) and carbon management. Cascio sees these as last-resort, inevitably controversial and rife with unintended consequences--but probably in the cards. Yikes.