Once toxic soup, a Lake Superior estuary is now swim-worthy
The $186 million restoration of a section of the St. Louis River that divides Duluth and Superior, Wis., is complete, and a new era of recreation can safely begin, officials say.
The $186 million restoration of a section of the St. Louis River that divides Duluth and Superior, Wis., is complete, and a new era of recreation can safely begin, officials say.