I guess he was talking about soot and other aerosols. That's huge for air quality, but climate change is primarily driven by the fundamental law of coal burning

I guess he was talking about soot and other aerosols. That's huge for air quality, but climate change is primarily driven by the fundamental law of coal burning: C + O_2 -> CO_2. If he managed to reduce the emission of sulfate aerosols (a likely target, since those are the primary cause of smog and acid rain) he is actually making the warming problem worse: http://www.yaleclimateconnections.org/2008/06/common-climate-misconceptions-why-reducing-sulfate-aerosol-emissions-complicates-efforts-to-moderate-climate-change/ http://www.yaleclimateconnections.org/2008/06/common-climate...