A Chinese woman wears an air mask in Beijing
A Chinese woman wears a heavy-duty air mask as she walks through hazardous pollution hanging over Beijing on January 4, 2015. Environmental groups in China issued a report last week detailing more than 1,000 companies that they say regularly exceed emissions standards, an attempt to "name and shame" Chinese industries that are in part responsible for making many Chinese cities the most polluted in the world. UPI/Stephen Shaver
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