US base closings could add to cleanup tasks despite EPA report of pollution declines.
The good news about toxic pollutants in the air, soil, and water is that overall levels are coming down. But according to the Environmental Protection Agency some of the most toxic substances - mercury, dioxin, lead, and PCBs - remain an increasing problem.
The recent announcement of another round of military base closures could put more focus on the problem of toxic waste and how to solve it.