China's air pollution reaches U.S. skies

July 28, 2006

(AP) -- On a mountaintop overlooking the Pacific Ocean, Steven Cliff collects evidence of an industrial revolution taking place thousands of miles away. The tiny, airborne particles Cliff gathers at an air monitoring station just north of San Francisco drifted over the ocean from coal-fired power plants, smelters, dust storms and diesel trucks in China and other Asian countries.

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