(NBC News) The Environmental Protection Agency is proposing a strict new standard on ozone pollution.
The agency wants to lower the acceptable ozone levels, last set in 2008 under the Clean Air Act, claiming it would improve American health and save lives.
The government estimates it could save 4,000 lives and prevent hundreds of thousands of asthma attacks each year.
The manufacturers who will have to cut down their pollution say it will cost the economy nearly three million jobs and more than $3 trillion.
The agency and its supporters claim all but a few dozen counties outside of California can hit the target in the next decade.
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