These people think you're stupid: Trace amounts of CO2 will allegedly make Lake Superior's 40 degrees F. water too hot

Parks in Great Lakes region hurt by climate change, report says

The report focuses on the five largest parks on the Great Lakes: Apostle Islands National Lakeshore in Wisconsin; Indiana Dunes National Lakeshore in Indiana; and Sleeping Bear Dunes National Lakeshore, Pictured Rocks National Lakeshore and Isle Royale National Park in Michigan.
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“If we don’t limit emissions, these parks are going to get so hot in the summer that they will really lose their current character and going to them could be a lot more like beaches and parks in the deep South, not in the Midwest,” Saunders said.

Apostle Islands National Lakeshore - Swimming (U.S. National Park Service)

Yes, it's true, Lake Superior can be really cold. The average annual water temperature of the lake is about 40 degrees Fahrenheit.