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(Chicago Tonight)

The lawsuit filed Wednesday by Illinois Attorney General Lisa Madigan and Lake County State’s Attorney Michael Nerheim alleges that Baxter violated a federal permit several times over a five-month span by releasing contaminated water that exceeded pollution limits. 

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Children on Chicago’s Southeast Side have higher levels of manganese in their toenails than children in other parts of the city, according to preliminary results of a study aiming to measure the impact of toxic metals on children’s health. 

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Thirteen veterans have died of Legionnaires' disease since 2015 at a state-run veterans home in Quincy. A new report by WBEZ reveals Illinois' top health official warned of the seriousness of the outbreak days before it was made public.

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Starting next month, some restaurant managers must be formally trained in food allergy safety. But an informal survey by the Illinois Food Allergy Education Association indicates not all restaurants are aware of the new rules. 

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A gene found in an Amish family in Indiana may hold the secret to living longer and healthier. We speak with the lead author of a new study.

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Kids are feeling more anxiety these days, especially in elite public high schools. That’s according to a recent series by the Chicago Tribune and Pioneer Press. We discuss childhood anxiety and some treatments.

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People with early stage Parkinson’s disease could benefit from high-intensity exercise, according to a first-of-its-kind study which found that it decreased the worsening of motor symptoms when performed three times a week.

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Fibromyalgia affects up to 6 percent of the world’s population, yet little is known about the cause of the disorder, characterized by widespread pain and fatigue. University of Illinois at Chicago researchers now hope to uncover its origins.

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Patti Beyer (Jon Hillebrand / NorthShore University HealthSystem)

Glenview resident Patti Beyer is advocating for a state law that would require mammography reports to inform women if they have dense breast tissue, a risk factor for cancer. “It’s already in the lab report to the doctor but unless the doctor tells you, it’s kept from you,” she said.

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(Courtesy Little Village Environmental Justice Organization)

Organizers from several Chicago environmental groups are demanding more action from the city to combat air pollution in industrialized neighborhoods as Mayor Rahm Emanuel prepares to host a high-profile summit on climate change.

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While the Trump administration has repeatedly tried to repeal Obamacare, Illinois residents are still taking advantage of it in droves.

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In an effort to reduce the number of back-to-back pregnancies among adolescents, Chicago researchers are designing a multimedia tool kit to educate, engage and offer resources to young women.

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Since the minimum age to purchase tobacco products in Chicago was increased to 21 in July 2016, fewer young adults in the city are smoking, according to data from a newly released survey.

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Byron Generating Station just south of Byron, Illinois. (Ben Jacobson / Wikimedia Commons)

Radioactive water leaking from Illinois nuclear power plants, despite promised safeguards—an investigative reporter on what’s been done.

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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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China’s most prominent environmental activist talks about the country’s pollution crisis.