Days after 'Poisoned Places' stories and disclosure of internal polluter 'watch list,' EPA starts naming names — and divulges no details

New studies say standards for mercury, particulates could save thousands of lives

A polluter seemed to comply with the Clean Air Act while exposing citizens to toxics. An inspector tried for years to do something about it.

House Republicans are expected to approve a bill that would allow Congress to block major regulations.

Agency’s dysfunctional Office of Civil Rights sits on complaints for years

Pulp mills emit hazardous pollutants that have been linked to heart and lung disease

The EPA is poised to issue a new regulation restricting toxic power plant emissions

The EPA releases details of a landmark rule to cut air emissions of mercury and other toxics from coal- and oil-fired power plants.

As communities battle toxic air, industry shapes EPA and state regulation.

Q&A with the man some call "the next EPA administrator" if Romney wins the White House.