http://www.realclimate.org/index.php/archives/2009/10/an-open-letter-to-steve-levitt/
Hillarious flaying of the bad math behind Steve Levitt's suggestion that we should abandon solar cells and switch to active geoengineering.
For one of Levitt's presentations on geoengineering:
http://www.youtube.com/watch?v=kfL6Xf7BWyQ
Mind you, I thought this was kind of an interesting idea, but I didn't really give it much thought. I still think geoengineering may be an important strategy to remember as a last ditch effort if the climate gets too bad.
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