Well it might be the only thing that works. Or just a plan B or something. It would be nice if it would work:
http://www.guardian.co.uk/environment/2011/jun/15/ipcc-geo-engineering-climate
http://www.guardian.co.uk/environment/interactive/2011/jun/15/ipcc-geo-engineering
http://www.guardian.co.uk/environment/2011/jun/15/geo-engineering-climate-consideration?intcmp=239
http://www.guardian.co.uk/environment/2011/jun/15/ipcc-geo-engineering-climate
http://www.guardian.co.uk/environment/interactive/2011/jun/15/ipcc-geo-engineering
http://www.guardian.co.uk/environment/2011/jun/15/geo-engineering-climate-consideration?intcmp=239