This chart from Bloomberg News shows Bejing's average concentrations of PM2.5, or fine particulate matter that can cause airway inflammation and leave residents at a higher risk for lung and heart disease. As you can see here, on January 12, the PM2.5 count reached a peak of 886, which is 532 percent of the daily average found in 16 U.S. airport smoking lounges. In 2012, Greenpeace estimated that exposure to PM2.5 in China led to more than 8,500 premature deaths in Beijing, Shanghai, Guangzhou and Xi'an. Hat tip to Boing Boing.
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