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A couple wearing face masks walks in a busy shopping area during polluted weather in Beijing on January 13, 2013.
A couple wearing face masks walks in a busy shopping area during polluted weather in Beijing on January 13, 2013.

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    Greenpeace on Beijing's hazardous smog

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Greenpeace on Beijing's hazardous smog

CNN's John Vause speaks to Zhou Rong, a climate campaigner with Greenpeace, about the effects of the pollution.

Greenpeace on Beijing's hazardous smog

CNN's John Vause speaks to Zhou Rong, a climate campaigner with Greenpeace, about the effects of the pollution.