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The U.S. Army Corp of Engineers says the best place to stop Asian carp from getting into the Great Lakes is the Brandon Road Lock and Dam in Joliet. But the state says the plan is too expensive for Illinois taxpayers and the shipping industry.

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A hefty Bighead carp, one of several types of Asian carp, caught in a net near Morris, Illinois. (Evan Garcia / Chicago Tonight)

A plan to fortify a barrier against Asian carp was set to be released in February but has been stalled by the Trump administration. 

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A silver carp was captured Thursday in the Illinois Waterway below the T.J. O’Brien Lock and Dam, about 9 miles from Lake Michigan. (Courtesy of Illinois Department of Natural Resources)

An 8-pound Asian carp was discovered last week beyond an electric barrier designed to prevent the invasive fish from reaching Lake Michigan. 

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(Roman Boed / Flickr)

Chicago data scientists competed against teams from Canada and the Netherlands in an annual event that highlights the innovative use of technology to improve the water quality of the Great Lakes. 

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A view of the Great Lakes from space. (USEPA Environmental-Protection-Agency / Flickr)

Issues impacting the Great Lakes and communities surrounding the massive freshwater system will be at the center of a two-day conference in Chicago starting Wednesday.

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Advocacy group Milwaukee Water Commons holds an event in support of clean water in August 2016. (Milwaukee Water Commons)

Organizers of a clean water summit in Chicago next week hope to draft a plan for replacing the city's nearly 400,000 lead water pipes. 

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(U.S. Fish and Wildlife Service)

With nearly $300 million in federal funding on the chopping block, leaders from across the Great Lakes region will convene next month in Chicago to address lead poisoning, oil pipelines and other threats to the area’s waters.

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(Dustin Tinney / Flickr)

In his book “The Death and Life of the Great Lakes,” author Dan Egan chronicles the history of the world’s largest group of freshwater lakes as well as the natural and man-made dangers threatening it.

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(Evan Garcia / Chicago Tonight)

Looking at the impact of a proposed funding cut to the program that aims to keep invasive species out of the Great Lakes.

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A hefty Bighead carp, one of several types of Asian carp, caught in a net near Morris, Illinois. (Evan Garcia / Chicago Tonight)

Wildlife agencies and fishermen in Illinois are using a Chinese technique to catch Asian carp, an invasive fish species threatening the Great Lakes ecosystem.

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(Frank McNamara / Flickr)

Lake Michigan and other Great Lakes could see a substantial amount of federal funding dry up.

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A bighead carp (U.S. Geological Survey / Flickr). Inset: An Asian carp burger at Asian Carp Grill 2015. (Margaret Frisbie)

Adventurous eaters concerned about Asian carp entering the Great Lakes will have a chance to devour the invasive fish at a special event held along the Chicago River next week.

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(Roman Boed / Flickr)

Proposed legislation could open the door to more invasive species in the Great Lakes, say environmentalists. But shippers say it puts a patchwork quilt of conflicting regulations under one federal agency that allows them to do business while still keeping invasive species out.

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The Mackinac Bridge.

A break in the aging pipeline that crosses under the pristine waters of the Straits of Mackinac could be catastrophic for the Great Lakes. Is the old pipeline a threat? Elizabeth Brackett brought us the story in June. We take another look in this encore presentation.

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Last weekend, the nonpartisan Council of Great Lakes Governors held a summit to discuss how to prevent a repeat of last year’s toxic algae bloom that left more than 400,000 without drinking water. We’ll talk with experts about the summit and the economic and technological advantages that Lake Michigan provides to Chicago. 

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The Great Lakes contain 90 percent of the fresh water in the U.S. and the Straits of Mackinac have some of the most pristine water in the Great Lakes. But underneath the water are more than 60-year-old pipelines carrying crude oil and natural gas. Elizabeth Brackett has the details.