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Beijing skies clear after long air pollution drive
Beijing skies clear after long air pollution drive
Greenhouse gas emissions reduced in Beijing to clear skies for Olympics | FOX 7 Austin
War on smog clears Beijing's skies
Creating Blue Skies over China: Policy and Processes of Removing Air Pollution
Beijing officials warn of extreme air pollution
Restricting Driving for Better Traffic and Clearer Skies: Did It Work in Beijing?
Beijing pollution
Strong Sandstorms Blanket Beijing & Chinese Provinces, Air Quality Drops To Hazardous Levels
Before & after: Beijing’s choking smog
Beijing lifts smog red alert as blue skies return
Beijing issues first red alert for air pollution