WASHINGTON — The U.S. Environmental Protection Agency’s current framework for evaluating the scientific evidence used for setting National Ambient Air Quality Standards (NAAQS) is effective, reliable, ...

A large and compelling body of evidence suggests that social circumstances—including income, education, food, housing, neighborhood conditions, and social connections—strongly influence health.

The Clean Air Act requires air-quality standards that are “requisite to protect the public health” with an “adequate margin of safety.” Such standards “shall accurately reflect the latest scientific ...