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As many as 400 Oregon residents are estimated to die prematurely every year from exposure to diesel exhaust, a toxic carcinogen and a contributor to climate change. While new vehicles have emission requirements, there are no regulations for the older diesel engines still in use. Special correspondent Cat Wise reports on the ways Oregon is trying to tackle the problem.
Major corporate funding for the PBS NewsHour is provided by BNSF, Babbel and 20th Century Fox. Funding for the PBS NewsHour Weekend is provided by Mutual of America. For a complete list of funders for the PBS NewsHour and PBS NewsHour weekend, click here.
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