Nov 20, 2002 — One of the biggest challenges facing Great Lakes water quality comes from polluted harbors. Scores of underwater sites have been identified, but cleanup has been painfully slow. Now, some people are taking a new approach, they're using an electrical charge to clean up pollutants. It's the first test in this country of the system. Supporters say it's cheaper and faster than conventional methods. The Great Lakes Radio Consortium's Bob Kelleher reports.