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Monroe Harbor looks very different this boating season: it’s only half full. What the Chicago Park District is doing with the extra space.

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Chicago’s beaches – more than two dozen of ‘em – opened for the season Friday. Here are 10 things you may not know about the city’s sandy side.

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An accident in the Straits of Mackinac is raising new fears about a possible oil spill disaster in the Great Lakes.

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The Chinese tech company Foxconn wants to withdraw 7 million gallons of water a day from Lake Michigan for its proposed new Wisconsin plant. But would that violate the compact to protect the Great Lakes?

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Cape Town, South Africa, could soon be the first major city to run out of water. What lessons can Chicago share – and learn?

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The city’s lawsuit comes a week after attorneys at the University of Chicago filed their own lawsuit against the steel corporation. “This Great Lake is our most precious natural resource and we must preserve and protect it,” Mayor Rahm Emanuel said in a statement.

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A surfer rides the waves on the south end of Lake Michigan. (Credit: Mike Killion)

An environmental nonprofit represented by University of Chicago lawyers filed a suit Wednesday against U.S. Steel over Lake Michigan pollution.

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A surfer rides the waves on the south end of Lake Michigan. (Credit: Mike Killion)

A nonprofit group working with the University of Chicago is poised to sue U.S. Steel over Lake Michigan pollution if a deal is not reached by Sunday between the company and environmental regulators.

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A surfer rides the waves on the south end of Lake Michigan. (Credit: Mike Killion)

Surfer environmentalists and the University of Chicago intend to sue U.S. Steel over toxic Lake Michigan spills after it twice released more than the allowable quantity of a cancer-causing chemical into the waters this year.

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Dr. Andrew Casper, Shedd Aquarium's new director of freshwater research (Courtesy © Shedd Aquarium)

A new team led by biologist Andrew Casper will expand Shedd Aquarium’s research of animals that live in local waterways—and how to protect them.

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A silver carp was captured in June 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)

Nearly a dozen U.S. senators, including Dick Durbin of Illinois, are speaking out about the latest delay over a plan to keep invasive Asian carp out of the Great Lakes.

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(Frank McNamara / Flickr)

A key federal program responsible for protecting the Great Lakes is one step closer to being fully funded after it was targeted for massive cuts earlier this year in President Donald Trump’s proposed budget.

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U.S. Steel's Gary Works plant (Ken Lund / Flickr)

Records related to an April spill of a toxic metal into a Lake Michigan tributary have not been given to Chicago. The city is now threatening to sue U.S. Steel.

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Chicago’s sewer and deep tunnel system couldn’t handle this weekend’s rain, allowing untreated sewage and stormwater into Lake Michigan.

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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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(Smart Destinations / Flickr)

As more cruises and kayaks join commercial barges on the river, some tour boat operators are concerned about safety. Learn the “rules of the road” for Chicago waterways.

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