Although the world has outsourced much of its manufacturing and pollution to China, some of that pollution is blowing back over the Pacific Ocean and into the United States, "making environmental and health problems unexpected side effects of U.S. demand for cheap China-manufactured goods."
One third of China's greenhouse gases is now from export-based industries, according to Worldwatch Institute, a U.S.-based environmental research group.
China's neighbors, such as Japan and South Korea, have regularly suffered noxious clouds from China in the last couple of decades as environmental regulations have been sacrificed for economic and industrial growth.
However, the new report showed that many pollutants, including black carbon, which contributes to climate change and is linked to cancer, emphysema and heart and lung diseases, travelled huge distances on global winds known as "westerlies".
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.
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