Cities like Los Angeles received at least an extra day of smog a year from nitrogen oxide and carbon monoxide from China's export-dependent factories, the report said, Reuters informs.
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.
"We've outsourced our manufacturing and much of our pollution, but some of it is blowing back across the Pacific to haunt us," co-author Steve Davis, a scientist at University of California Irvine, said.
Between 17 and 36 percent of various air pollutants in China in 2006 were related to the production of goods for export, according to the report, and a fifth of that specifically tied to U.S.-China trade.
Trans-boundary pollution has for several years been an issue in international climate change negotiations, where China has argued that developed nations should take responsibility for a share of China's greenhouse gas emissions, because they originate from production of goods demanded by the West.