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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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Along Wolf Lake on Chicago’s Southeast Side lies the only Illinois state park within city limits, where visitors can find fishing spots, biking trails – and invasive species.

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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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(Flickr / Laura Marie)

A first-of-its-kind study shows that forests in Chicago face significant threats from climate change, with native trees especially vulnerable to increases in temperature, precipitation and other changes.

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The Lincoln Park Zoo is breeding and releasing smooth green snakes, a species that's harmless to humans, in their preferred moist, marshy habitats. (squamatologist / Flickr)

A Chicago conservation alliance is asking for the public’s help to save a dozen native species, including the endangered Blanding's turtle.

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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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Despite a spate of recent reports, the Illinois Department of Natural Resources says that reintroducing alligator gar into Illinois' waterways will not prevent Asian carp from reaching Lake Michigan.

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We share what you had to say about renovations to Wrigley Field, invasive species in the Great Lakes, and an artist's crusade to paint and preserve native prairie plants in tonight's viewer feedback.

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The EPA has awarded more than $8 million in grants to combat invasive species in the Great Lakes. We talk with the Shedd Aquarium's Phil Willink about the $100 million a year invasive species problem.

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From invasive species to summer storms, there's a lot going on in the world of science. Museum of Science and Industry's Rabiah Mayas stops by for another Scientific Chicago.