Everyone probably noticed that on November 1, 2010, the skies hazed up almost immediately. In case anybody was wondering if it was just a weather fluke, here’s proof it wasn’t: The day after Expo ended, the amount of particulate matter in Shanghai’s air more than doubled from the day before (more than tripling the amount from October 30, even). In fact, it was the third-worst day of 2010 (there were two days in March that were even more terrible).
So what happened? Did everyone just begin constructing immediately as soon as the closing ceremony ended? Or was all this pollution being sucked up somewhere deep underground, only to be released in a collective belch once the Expo officials decided no one would care?