I'm in Beijing this week. The pollution here has to be seen (and felt, as you breathe) to be believed. I'm not surprised that all sorts of technical solutions

I'm in Beijing this week. The pollution here has to be seen (and felt, as you breathe) to be believed. I'm not surprised that all sorts of technical solutions are being discussed, just because it's so crazy terrible. Whether such proposals (such as a mist cannon) is a real solution is a good question, but it's worth trying lots of stuff.