Ask science fiction fans about global warming and there’s a good chance they’ll start waxing lyrical about massive engineering projects that will Save Us All. We are, after all, used to the idea of terraforming planets so that humans can live on them. Why now terraform our own (deliberately rather than accidentally). Greg Benford is a big advocate of the newly minted discipline of geoengineering.
Well, not to be thought fuddy-duddies, the Royal Society, Britain’s premier science club, launched an investigation. Their report has just been published. Oliver Morton has a summary of it here, and the top finding is, “none of these options in any way takes the place of emissions control.” Sorry Greg. That’s not to say that such methods can’t help, but in the opinion of the Royal Society we still need the economic and political measures that are currently being put in place.