The Colors of a River: Pollution and the Upper Mississippi

When did we first begin polluting the Mississippi and how? How bad did it get before anyone did something about it? Dr. John O. Anfinson, author and historian with the National Park Service, discussed these questions and more at his recent lecture, "The Colors of a River: Pollution and the Upper Mississippi" on January 26th. Learn more and check out photos and video from the presentation at the Gorge Stewards blog, gorgestewards.blogspot.com.