I travelled to Guangzhou in Southern China last week for a few days on business. The air pollution was pretty appalling. The picture above is taken from my hotel window. On my travels, this part of the world is easily the worst for air quality. Aside from the rasping sensation one gets in the respiratory system, it’s pretty depressing not seeing the sun all day. It is quite common to read about the Brits complaining about Seasonal Affective Disorder (SAD). I wouldn’t be at all surprised if people in Southern China are similarly afflicted.