The education funding model Gov. Bruce Rauner hopes will replace a new formula he sees as a Chicago Public Schools' bailout contains a “significant error” in how it calculates the value of TIF districts, according to the Illinois State Board of Education.

It has become a rite of summer for hundreds of thousands each year. But beyond the annual intrigue over who will become the next breakout star comes a persistent question from city residents: Is this massive private festival really worth it?

“I think three or four years into something it’s important to let new ideas come in. It’s important to turn over the leadership,” 1871 CEO Howard Tullman said. “I want to give other people the opportunity to move up.”

Zingo, the first black-crested mangabey born at the zoo, has light-colored skin that will darken over time. 

The Pulitzer Prize-winning poet also served as the state's poet laureate from 1968 until her death in 2000. Today's poets are finding creative ways to remember her.

Illinois Gov. Bruce Rauner hasn’t used authority to borrow $6 billion to begin making a dent in the backlog of overdue bills that tripled during the budget impasse under the Republican’s watch.

Wyndham Lathem, 42, who is accused in the murder of a 26-year-old Chicago man, made his first court appearance on Monday.

Watch the Aug. 7, 2017 full episode of "Chicago Tonight."

With tensions still high in Springfield, we talk with two lawmakers who are resigning from the legislature.

For the first time in the United States, scientists edit a human embryo and successfully remove a genetic mutation that causes disease.

“Chicago will not be blackmailed into changing our values, and we are and will remain a welcoming city,” Mayor Rahm Emanuel said Sunday at a press conference announcing the suit.

The bulk storage operator on Chicago’s Southeast Side has exceeded a federal threshold for emissions of toxic manganese dust, according to new air monitoring data published by the EPA.

One of Frank Lloyd Wright’s finest public buildings is ready for the public again. We take a look inside the restoration of Unity Temple.

As districts across the state await an answer on school funding, Chicago Public Schools announced Monday it’s laying off more than 950 teachers and support staff.

The city will monitor soil and air pollution near residents’ homes and begin increased inspections of industrial sites.