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Lake Michigan. (Patty Wetli / WTTW News)

When it comes to what scientists know about the effects of climate change on the Great Lakes, research to date has only scratched the surface. A new study shows that Lake Michigan is warming — even its greatest depths. “This is a large effect, not just something superficial,” scientists say.

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A group of suckers on the move in Door County, Wisconsin, during a previous migration. (Courtesy of Shedd Aquarium)

Shedd Aquarium researchers are eagerly anticipating the spring migration of sucker fish, a species that could tell us about climate change.

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(Rudy and Peter Skitterians / Pixabay)

The second annual event offers simple ways to conserve water in advance of World Water Day.

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Charmayne Anderson holds a large Bighead carp caught in a lake in Morris, Illinois, in 2017. (Evan Garcia / WTTW News)

When it comes to keeping Asian carp out of the Great Lakes, Illinois is the last line of defense, but the state’s not alone in the battle. Michigan will transfer up to $8 million to Illinois via an intergovernmental agreement as part of an effort to keep Asian carp at bay.

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A group of suckers on the move in Door County, Wisconsin. (Courtesy of Shedd Aquarium)

Walking along Lake Michigan or the Chicago River, it’s difficult to imagine an underwater world teeming with life. But it’s there, promises Karen Murchie, a research biologist at the Shedd Aquarium, and we have to protect it.

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In this April 6, 2017 file photo, strong winds send huge waves at the Lake Michigan shoreline at South Haven Michigan. (Mark Bugnaski / Kalamazoo Gazette via AP, File)

A program that has pumped $2.7 billion into healing long-term injuries to the Great Lakes environment has received authorization from Congress to continue another five years.

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In this Thursday, Nov. 12, 2020, file photo provided by the Michigan Office of the Governor, Gov. Gretchen Whitmer addresses the state during a speech in Lansing, Mich. (Michigan Office of the Governor via AP, File)

Michigan Gov. Gretchen Whitmer took legal action Friday to shut down a pipeline that carries oil beneath a channel linking two of the Great Lakes.

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A bighead carp, a type of Asian carp, caught in the Illinois River, the principal tributary of the Mississippi River. There are no North American fish large enough to eat Asian carp, according to the Asian Carp Regional Coordinating Committee. (Photo courtesy U.S. Geological Survey)

Efforts to increase demand for Asian carp as a food are aimed at buying time for development of a long-term solution to the threat posed by the invasive fish.

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(Jolene / Flickr; inset: Twitter / @lakesuperior)

The “greatest lake of all time” has a Twitter account to match its swagger, run by a human who speaks not on behalf of the lake but as the lake in a brash, anthropomorphic way. And we can’t get enough of it.

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U.S. Sen. Dick Durbin appears on “Chicago Tonight” on Sept. 30, 2019.

Sen. Dick Durbin and Mayor Lori Lightfoot held a joint news conference Friday to call for federal funding to manage and protect the region’s vulnerable shoreline.

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(Roman Boed / Flickr)

Author Dan Egan had sobering words for Chicagoans at a One Book, One Chicago event this week.

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Lake Michigan waves splash onto the lakefront path on Oct. 21, 2019. (WTTW News)

With near record high water levels, Lake Michigan swallowed up beaches, piers and sidewalks across Chicago and the region this summer. An Army Corps forecast shows those levels may persist into next year.

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(Credit: Jeff Schmaltz, MODIS Rapid Response Team, NASA/GSFC)

The bill, which still needs approval in the full House and the Senate, would expand a 10-year effort to clean up toxic pollution, restore fish and wildlife habitat, manage invasive species and reduce runoff pollution in the Great Lakes.

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Illinois Department of Natural Resources biologist Justin Widloe holds a bighead carp. (Chad Merda / Forest Preserve District of Will County)

If Asian carp invade the Great Lakes, experts say the fish would have a devastating effect on the marine food chain and the region’s $7 billion fishing industry. We get a look at efforts to keep them out of Illinois waterways.

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In this June 13, 2012, file photo, Asian carp, jolted by an electric current from a research boat, jump from the Illinois River near Havana, Ill. (AP Photo / John Flesher, File)

“Our study indicates that the carp can survive and grow in much larger areas of the lake than previous studies suggested,” said Peter Alsip, lead author of the paper.

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Illinois Gov. J.B. Pritzker (WTTW News file photo)

Gov. J.B. Pritzker and four of his counterparts in the region are urging candidates in the 2020 presidential election to back a new plan aimed at protecting the Great Lakes.