Yesterday Fareed Zakaria interviewed a former Microsoft geo-engineer who discussed an entirely new way to deal with global warming. I think the idea needs to be circulated, further studied, and seriously considered, especially given how difficult it was to get even the most watered-down thing accomplished in Copenhagen. It would give us more time to go green, etc.
Combat climate change by pumping liquid sulfur dioxide into the stratosphere through nozzles in a hose lifted more than 15 miles into the atmosphere using helium-filled balloons. As described by Myhrvold in an interview this week, the idea behind this "Stratoshield" would be to dim the sun in critical areas of the world by just enough to reduce or reverse the effects of global warming.
"We think it's a simple, relatively cost-effective, pretty practical way that you could intervene and cool Earth off enough to present disaster," Myhrvold said.
http://www.techflash.com/seattle/2009/10/video_nathan_myhrvold_explains_how_to_save_the_world.htmlhttp://www.cnn.com/video/#/video/podcasts/fareedzakaria/site/2009/12/20/gps.podcast.12.20.cnn