Back in Shanghai this week. Today's paper tells me that the PM2.5 index hit 602.5 yesterday @ 1pm. PM10 peaked at 671 around the same time. It sure was murky when I went out for lunch and the air was positively chewable. Today seems better - visibility was around 500 metres but yesterday was as bad as anything I've ever seen since the bad old days before the Olympics.
Anyway, hello to all. Further posts will follow and I will get some photos up.