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(Creative Commons /  © 2013, Jeremy Atherton)

A coalition of attorneys general and the city of Chicago is prepared to challenge the Trump administration’s environmental policies in court.

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Newly released data from air monitors on Chicago’s Southeast Side shows higher levels of manganese than previously recorded, prompting renewed calls for a ban of the toxic metal, which can cause nervous system damage at high exposures. 

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(Creative Commons /  © 2013, Jeremy Atherton)

A new $450,000 federal grant program partners CPS students with university professors to study the impact of toxic metals on Chicago neighborhoods. 

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Chicago elected officials and environmental leaders react to President Trump's decision to withdraw the U.S. from the Paris climate accord. 

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(Google Maps)

A company on the West Side of Chicago has been cited for improperly storing chemicals and threatening public health, according to a suit filed by Illinois Attorney General Lisa Madigan.

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An announcement last month from the EPA prompts Chicago to launch its own website dedicated to the science behind climate change.

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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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(Steve Johnson / Flickr)

A new report shows that in 2015, Illinois ranked among the five worst states in terms of largest populations served by water systems with health violations. 

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(Creative Commons /  © 2013, Jeremy Atherton)

Illinois Attorney General Lisa Madigan joined a group of 16 attorneys general last week in urging Congress to reject the rollback of standards that combat pollution and protect air quality.

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Community Strategy Group organizer April Friendly, left, leads a rally Wednesday during EPA head Scott Pruitt's visit to East Chicago. (Alex Ruppenthal / Chicago Tonight)

About 100 East Chicago residents and activists rallied and marched Wednesday while EPA head Scott Pruitt visited the city's lead-contaminated neighborhoods.

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EPA Administrator Scott Pruitt speaks Wednesday after meeting with residents in East Chicago. (Alex Ruppenthal / Chicago Tonight)

The head of the Environmental Protection Agency told residents in East Chicago on Wednesday that the agency had no plans to close its Chicago office. 

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Indiana Dunes

A spill last week at a U.S. Steel site in Northwest Indiana released an unknown amount of a potentially carcinogenic chemical into a Lake Michigan tributary, prompting the closure of three beaches at Indiana Dunes National Lakeshore.

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Illinois Attorney General Lisa Madigan (Chicago Tonight)

Illinois and nine other states are threatening to sue the Trump administration over delayed implementation of energy efficiency standards. 

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Kinder Morgan's former site at 2926 E. 126th St. in Chicago. (Google)

A newly released report shows additional sources of manganese dust on Chicago’s Southeast Side, where residents were already dealing with exposure to manganese and other pollutants. 

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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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Experts say proposed cuts to the EPA would affect Chicago communities already impacted by pollution and other environmental threats. (Creative Commons /  © 2013, Jeremy Atherton)

Cuts to the EPA’s budget would affect a disproportionate number of minority and low-income residents in Chicago, experts say.