Stricter Smog Standard Sought

The Obama administration took unilateral steps Wednesday to cut levels of smog-forming pollution linked to asthma, lung damage and other health problems, making good on one of President Barack Obama's original campaign promises while setting up a fresh confrontation with Republicans and the energy industry. In a long-awaited announcement, the Environmental Protection Agency said it prefers a new, lower threshold for ozone pollution of 65 to 70 parts per billion, but left open the possibility it could enact an even lower standard of 60 parts per billion demanded by environmentalists.

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