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Sunlight reflects off of Lake Michigan at Montrose Harbor on an unseasonably warm day, Tuesday, Feb. 27, 2024, in Chicago. (AP Photo/Erin Hooley)
Rae-Ann Eifert, a lake monitor for the Wisconsin Department of Natural Resources, braved sub-freezing temperatures to gather buckets of water for testing off a Lake Michigan breakwater in Racine, Wis., on Feb. 28, 2024, as part of an effort across the Great Lakes to understand the effects of an iceless winter. Unseasonable warmth has left the Great Lakes all but devoid of ice, leaving scientists scrambling to understand the consequences as climate change accelerates. (AP Photo/Teresa Crawford)
Rae-Ann Eifert, a lake monitor for the Wisconsin Department of Natural Resources, braved sub-freezing temperatures to gather buckets of water for testing off a Lake Michigan breakwater in Racine, Wis., on Feb. 28, 2024, as part of an effort across the Great Lakes to understand the effects of an iceless winter. Unseasonable warmth has left the Great Lakes all but devoid of ice, leaving scientists scrambling to understand the consequences as climate change accelerates. (AP Photo/Teresa Crawford)
A layer of ice covers Lake Michigan, Thursday, Feb. 2, 2023, in Chicago. (AP Photo/Erin Hooley)
George Miller climbs out of the icy waters of Lake Michigan, Thursday, Feb. 2, 2023, in Chicago. (AP Photo/Erin Hooley)
Pancake ice floats on Lake Michigan, Thursday, Feb. 2, 2023, in Chicago. (AP Photo/Erin Hooley)
A layer of ice covers Lake Michigan, Thursday, Feb. 2, 2023, in Chicago. (AP Photo/Erin Hooley)
Rae-Ann Eifert, a lake monitor for the Wisconsin Department of Natural Resources, braved sub-freezing temperatures to gather buckets of water for testing off a Lake Michigan breakwater in Racine, Wis., on Feb. 28, 2024, as part of an effort across the Great Lakes to understand the effects of an iceless winter. Unseasonable warmth has left the Great Lakes all but devoid of ice, leaving scientists scrambling to understand the consequences as climate change accelerates. (AP Photo/Teresa Crawford)
Sunlight reflects off of Lake Michigan at Montrose Harbor on an unseasonably warm day, Tuesday, Feb. 27, 2024, in Chicago. (AP Photo/Erin Hooley)
Sunlight reflects off of Lake Michigan at Montrose Harbor on an unseasonably warm day, Tuesday, Feb. 27, 2024, in Chicago. (AP Photo/Erin Hooley)