In just a handful of decades, the rusty crayfish has become dominant in the Great Lakes. Join us on a deep dive into this elusive invader.

The John D. and Catherine T. MacArthur Foundation will increase its giving in response to what it calls a “crisis" prompted by the Trump administration’s freeze on federal foreign aid and the now- suspended freeze on federal grants.

City Hall narrowly approves a controversial new borrowing deal. And the history behind the Chicago dance style known as steppin’.

The measure passed by the narrowest possible margin with the support of the entire Progressive Caucus and all but four members of the Black Caucus.

Disability rights group Equip for Equality filed a lawsuit alleging the men still incarcerated at Stateville Correctional Center are living in “unduly restrictive and isolating conditions compared to prisoners without disabilities, because of their disabilities.”

Shermann “Dilla” Thomas has a new gig at theDuSable Black History Museum as a brand ambassador and social media chief — an opportunity he’s called a “dream job.” It’s just one of his many projects — from giving bus tours to posting on TikTok about the city’s lesser-known history.

State Superintendent Tony Sanders acknowledged that roughly 10% of funding for Illinois school districts could be at risk if the federal government ceases funding. ISBE receives billions annually from the federal government.

“We started this program with a simple premise: In a healthy and functioning society, no one should fall into financial ruin simply because they got sick,” Gov. J.B. Pritzker said during a news conference announcing the latest round of medical debt relief.

Michelle Trachtenberg, a former child star who appeared in the 1996 “Harriet the Spy” hit movie and went on to co-star in two buzzy millennial-era TV shows — “Buffy the Vampire Slayer” and “Gossip Girl” — has died. She was 39.

Antonio Reyes — who was charged this week with five new counts of first-degree murder as well as four counts of attempted first-degree murder — now stands accused in six separate fatal shootings.

Each Wednesday, WTTW News producer Josh Terry presents must-see live music shows from indie rock to jazz, country, hip-hop and more.

The mayor’s $830 million borrowing proposal faces pushback. A look at plans to rid the Chicago Police Department of extremist officers. And remembering legendary soul singer Jerry “Iceman” Butler.

Illinois is giving municipalities the ability to reinstitute the 1% grocery tax locally starting in January, when the state one disappears. Municipalities are now asking the state to give them more taxing authority.

The Chicago City Council is set to vote on the proposal Wednesday, after a week-long delay fueled by outrage whipped up on social media, the budding 2027 race for mayor and the lack of trust many alderpeople have in Mayor Brandon Johnson’s ability to steer the city through rough financial seas.

The Department of Government Efficiency, run by Trump adviser Elon Musk, published an updated list Monday of nearly 2,300 contracts that agencies terminated in recent weeks across the federal government.