Once again, dangerous air pollution. “@BeijingAir: 02-24-2013 14:00; PM2.5; 320.0; 370; Hazardous (at 24-hour exposure at this level)”
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Thanks. Twitter will use this to make your timeline better. UndoUndo
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@BeijingAir "Hazardous" when I de-Twittered days ago, I'm back & still "hazardous." What are they smoking over there?Thanks. Twitter will use this to make your timeline better. UndoUndo
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