Potomac tops conservation group's list of endangered rivers
Monday, May 21, 2012 - 11:03
in Biology & Nature
The Potomac River is much healthier today than it was 40 years ago, when its chemical-laced, sewage-laden waters helped inspire the 1972 Clean Water Act. But the Washington waterway still has a long way to go, as suggested by its No. 1 ranking in a new list of America's most endangered rivers.