Stop me if you’ve heard this one before:

The Bush administration on Tuesday proposed new air quality regulations intended to reduce modestly sooty pollutants that health officials blame for thousands of premature deaths and illnesses each year.

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But in proposing the first change since 1997 in federal standards on the pollutants, called particulate matter, the Environmental Protection Agency largely ignored recommendations for tighter controls from its own scientists and from an independent panel of outside experts.

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