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China Smog Creates What Some Call a Kind of Respiratory Nuclear Winter

Air pollution is making it difficult to see, breathe and even walk outside without a mask.
02/26/2014

Transcript for China Smog Creates What Some Call a Kind of Respiratory Nuclear Winter

The grip of an epic dome of fog. The air pollution so dire, it's like a respiratory nuclear winter. Bob woodruff is on the ground. And he showed us how hard it is to reach clean air through all that... See More
This transcript has been automatically generated and may not be 100% accurate.
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