Shares closed lower in Asia on Monday. In China the Shanghai Composite fell 1.7% to 2,792 and in Hong Kong the Hang Seng Index dropped 0.7% to 23,527. Markets in Japan were closed in celebration of Coming of Age Day.
With the latest round of global climate change talks set to begin this week in Cancun, Mexico, the assembled delegates should be thankful they're not meeting in, say, Beijing or New Delhi. Those two cities are tied at the top of a list no city should want to be on: those with the world's worst air quality.