How does pollution in China affect the U.S.?

Asia's Pollution Messing With U.S. Weather? New research is suggesting the pollution in Asian countries could be affecting the weather in the United States. Matt Sampson has the details. Follow @Sean_Breslin. read more

The amount of air pollution in the Western United States resulting from emissions from China is still very small compared with the amount produced by sources in the United States that include traffic and domestic industries. read more

Despite all the leaps the United States made in the past few years to cut ozone emissions, researchers found China's pollution is blowing into the Western U.S. and putting a dent in the progress. The findings, published this week in the journal Nature Geoscience, show the ozone levels in the troposphere – the lowest level of the atmosphere – rose by about 7 percent over China from 2005 to 2010. read more