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PM 2.5 and the foggy version of Beijing – Peking und ‘Der Nebel’
So today the air quality really sucked. It went downhill after China National Day on Oct 1st, but today we seemed to have reached a new low (or high, depending on how you measure it…): The Air Quality Index [AQI] of the U.S. Ambassy rated PM 2.5 levels as hazardous and advised citizens to don…