For the engineers this is an interesting read: http://cornerstonemag.net/pollution-control-of-coal-fired-power-generation-in-china-an-interview-with-wang-zhixua

For the engineers this is an interesting read: http://cornerstonemag.net/pollution-control-of-coal-fired-power-generation-in-china-an-interview-with-wang-zhixuan/ http://cornerstonemag.net/pollution-control-of-coal-fired-po... According to this article, coal fired stations are no longer the primary source of PM2.5. Road vehicles emit an order of magnitude more particulate matter. I recall about 20 years ago, Santiago had to implement a system where odd-numbered vehicles were allowed to drive on one day, and even-numbered the next, to cut down on the haze problem. Perhaps electric vehicles are the way to go.