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Cliff Haefke, director of the UIC Energy Resources Center, left, and policy analyst Graeme Miller analyze the 7-megawatt combined heat and power combustion turbine at the UIC West Campus Utilities Plant. (Courtesy University of Illinois at Chicago)

Thanks to a new U.S. Department of Energy grant, UIC’s Energy Resources Center will promote and help install high-efficiency combined heat and power systems across the Midwest.

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Gov. Bruce Rauner has thus far ignored calls to commit Illinois to meeting goals set in the Paris climate agreement, which aims to slow global warming through reductions in greenhouse gas emissions.

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Former President Barack Obama speaks Tuesday during a climate change summit in Chicago. (Chicago Tonight)

A good chunk of the U.S. will stay in the Paris climate agreement, despite President Donald Trump’s decision to withdraw from the accord. That was the message Tuesday from former President Barack Obama and several mayors from the U.S. and around the world. 

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

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(Walter Albertin / Wikimedia Commons)

The days when Americans fretted over an imminent U.S.-Soviet nuclear showdown might be over, but the consequences of a new nuclear age are still reverberating today.

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Calumet River (Courtesy Friends of the Chicago River)

A new $960,000 grant will improve 2.5 miles of streams for nearly 20 species of fish and create 10 acres of neighborhood green space in the Chicago-Calumet region. 

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EPA Administrator Scott Pruitt speaks April 19 after meeting with residents of East Chicago’s lead-contaminated neighborhoods. (Alex Ruppenthal / Chicago Tonight)

Since the inauguration of President Donald Trump, dozens of employees have left the EPA’s Region 5 office in Chicago. Current and former employees say the loss of staff is already putting a strain on operations. 

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Workers from the Environmental Protection Agency respond to an oil spill Oct. 26 at a fork of the Chicago River known as Bubbly Creek. (EPA)

The EPA likely won’t be able to determine the source of a late October oil spill in the Chicago River because the agency was notified about the spill two days after it occurred, the EPA said Tuesday. 

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An overhead view of Watco’s storage terminal in Chicago at 2926 E. 126th St. (Google)

Environmental advocates say a Southeast Side storage company violated city standards for air pollution earlier this year. But the company disagrees, asserting that the state’s more lenient law applies. 

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Two months after becoming the first company approved for fracking in Illinois, Woolsey Operating Company has withdrawn its permit. 

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(Trey Ratcliff / Flickr)

After cutbacks at the EPA and skepticism within the Trump administration about climate change, the city of Chicago has made clear its intention to step up efforts to protect the environment.

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An overhead view of Watco's storage terminal at 2926 E. 126th St. in Chicago. (Google)

A Southeast Side company tipped off regulators to its own violation of city air pollution standards, documents submitted to the city show. 

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(Jeremy Atherton / Wikimedia Commons)

In an effort to fill a void created by federal and state agencies that have cut back environmental oversight, Chicago plans to expand its environmental enforcement division.