Beijing pollution

Beijing's pollution level spikes, authorities blame perfumes and hair gel

Beijing blanketed by heavy air pollution

Pollution in Beijing region reduced by 38%

Delhi vs Beijing: India's capital miles ahead in race to be most polluted

Beijing to shut 2,500 small, polluting firms

Seven killed in road accident in China

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Ten Chinese cities issue pollution red alert

Purple haze over Chinese city puzzles residents

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What is the relation between sex and smog?