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A golfer plays on the court on a hazy day at Pine Valley Golf Club on the outskirts of Beijing, China, Sunday, Oct. 6, 2013. Fog and pollution descended on northern China on Sunday, forcing international golf and tennis players to play in hazardous smog and leading to flight cancellations and road closures as millions of Chinese headed home from a national holiday. (AP Photo/Alexander F. Yuan)

China's air pollution crisis

Pollution from China travels in large quantities across the Pacific Ocean to the United States, a new study has found, making environmental and health problems unexpected side effects of U.S. demand for cheap China-manufactured goods.

On some days, acid rain-inducing sulphate from burning of fossil fuels in China can account for as much as a quarter of sulphate pollution in the western United States, a team of Chinese and American researchers said in the report published by

the U.S. National Academy of Sciences, a non-profit society of scholars. (REUTERS)

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