"In 19 years of piloting his boat around Lake Superior, Jody Estain had never observed the water change as it has this summer. The lake has been unusually balmy and cloudy, with thick mats of algae blanketing the shoreline.

“I have never seen it that warm,” said Mr. Estain, a former Coast Guard member who guides fishing, cave and kayak tours year-round. “Everybody was talking about it.”

But it was not just recreational observers along the shores of the lake who noticed the changes with concern. Lake Superior, the largest of the Great Lakes with more than 2,700 miles of shoreline, is the latest body of water to come under increased scrutiny by scientists after the appearance this summer of the largest mass of green, oozing algae ever detected on the lake."

Christine Hauser reports for the New York Times August 29, 2018. [2]