Hill: The Environmental Protection Agency has made substantial progress in reducing toxic air pollution since 1990, reducing many pollutants by more than half, regulators told Congress Thursday.
On a national basis, reductions include a 66 percent drop in benzene, a nearly 60 percent reduction in mercury from man-made sources and an 84 percent drop in lead.
The Thursday report is the second and final update required under the 1990 updates to the Clean Air Act, which mandated that the EPA work to...