Many products in California homes are stamped with the words"made inChina."And generally, those products are purchased due to a lower price point.But do those savings come at a greatercost tothe air we breathe?

Researchers at the University of California at Irvine connected manufacturing in China to pollution that carries over the Pacific Ocean to the United States.

Many of the productspurchasedat local storesresult in pollution from the Chinese factories manufacturing and exporting products to the U.S.California is getting hit first with that nasty air, say researchers.

For example, in Los Angeles, the nitrogen oxide and carbon monoxide from Chinese factories pushes smog levels above U.S. federal ozone limits at least one extra day per year. It's evenworse in the Spring when incoming dust, ozone, and carbon causes dangerous spikes in contaminants that settle in valleys and basins around California.

Scientists point out that while Chinese pollution exports have hurt air quality in the Western states, the offshoring of U.S. manufacturing has improved air quality in the eastern half of the country.

A former Chinese health minister recently said that air pollution kills 500,000 people in China every year.

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