wabrandsma writes "What goes around comes around – quite literally in the case of smog. The US has outsourced many of its production lines to China and, in return, global winds are exporting the Chinese factories' pollution right back to the U.S. From the article: '...the team combined their emissions data with atmospheric models that predict how winds shuttle particles around. These winds push Chinese smog over the Pacific and dump it on the western US, from Seattle to southern California. The modelling revealed that on any given day in 2006, goods made in China for the US market accounted for up to a quarter of the sulphate smog over the western U.S..'"
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