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Lake Superior’s ongoing transformation, courtesy of climate change

WI Public Radio: Swimming in Lake Superior has never been easy without a wetsuit, but if you're going in with just a swimsuit late August is usually one of the best times. On a hot day near Marquette, Mich. last weekend, three college students jumped off what are called the Black Rocks and into the relatively cool water. Even a visiting journalist took the plunge. As refreshing as a brief swim in the big lake might be, scientists and advocates say there appear to be trouble signs for the waters. In some of the...