San Joaquin Valley failed to meet federal ozone standards and in this special report George Lindsay Young shows us why some say air pollution from diesel exhaust may be California's dirty little secret.
Months after the San Joaquin Valley failed to meet federal ozone standards, the government is expected to downgrade the air basin to severe non-attainment. In this special report George Lindsay Young shows us why some say air pollution from diesel exhaust may be California's dirty little secret.
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