E.P.A. Seeks Tighter Rules To Cut Down Air Pollution.

The Environmental Protection Agency on Thursday proposed a stricter standard for smog-causing pollutants that would bring substantial health benefits to millions of Americans while imposing large costs on industry and local governments. The standard would replace one set by the Bush administration in March 2008, which has been challenged in court by state officials and environmental advocates as too weak to adequately protect human health and the environment. [ABSTRACT FROM PUBLISHER]