A woman wears a mask in Beijing last month. A UC Davis study says pollution from China is affecting air quality in the Central Valley, above right. “The Clean Air Act specifically says that we are to account for ozone, and it also makes it clear that we are not to be held responsible for foreign sources of pollution in ozone,” said David Lighthall of the San Joaquin air district.
A woman wears a mask in Beijing last month. A UC Davis study says pollution from China is affecting air quality in the Central Valley, above right. “The Clean Air Act specifically says that we are to account for ozone, and it also makes it clear that we are not to be held responsible for foreign sources of pollution in ozone,” said David Lighthall of the San Joaquin air district. Ng Han Guan The Associated Press
A woman wears a mask in Beijing last month. A UC Davis study says pollution from China is affecting air quality in the Central Valley, above right. “The Clean Air Act specifically says that we are to account for ozone, and it also makes it clear that we are not to be held responsible for foreign sources of pollution in ozone,” said David Lighthall of the San Joaquin air district. Ng Han Guan The Associated Press

Pollution from China taking high route to Central Valley, study says

March 31, 2015 5:59 PM

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