Cool it

This time from someone who actually knows what they are talking about:

Ninety-nine percent of the $3 billion federal Climate Change Technology Program should still go toward developing climate-friendly energy systems. But 1 percent of that money could be put toward working out geoengineered climate fixes like sulfate particles in the atmosphere, and developing the understanding we need to ensure that they wouldn’t just make matters worse.

-- from How to Cool the Globe by Ken Caldeira.

P.S. 25 Oct: Ray Pierrehumbert at RealClimate responds.