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(Lisle Police Department / Facebook)

A suspected serial killer strangled a suburban Chicago teenage girl in 1976 and likely killed another woman just days before she was to testify in court that he raped her, police said Monday.

Watch the Jan. 14, 2020 full episode of “Chicago Tonight.”

Dr. Jeremiah Stamler (WTTW News)

These days, we know that eating foods high in saturated fats, salt and cholesterol is unhealthy. But that wasn’t always the accepted wisdom. And the doctor whose research led to many of those discoveries just celebrated a milestone.

(Angelo Esslinger / Pixabay)

Cancer treatment can be costly, but new findings from Rush University Medical Center suggest an inexpensive, effective treatment could be within reach. 

Speaker of the House Nancy Pelosi, D-Calif., arrives to meet with the Democratic Caucus at the Capitol in Washington, Tuesday, Jan. 14, 2020. (AP Photo / J. Scott Applewhite)

The U.S. House is set to vote Wednesday to send the articles of impeachment against President Donald Trump to the Senate, and pressure was mounting Tuesday on senators to call fresh witnesses for the historic trial.

(WTTW News)

Sales statewide slid from more than $2 million in the opening days to about $1.2 million as dispensaries struggled to keep shelves full.

A new book explores the landmark years in which the Supreme Court reshaped the course of the United States. We discuss “Democracy and Equality” with University of Chicago law professor Geoffrey Stone, who co-authored the book.

Brookfield Zoo lions Zenda, left, and Isis. (Jim Schulz / Chicago Zoological Society)

Following what appears to have been a tragic accident, the zoo reported the death of its female African lion, Isis, less than two weeks after the loss of her mate, Zenda.

Nancy Rosen (WTTW News)

Lily Tomlin plays an artist on the popular Netflix series “Grace and Frankie,” but she isn’t creating the art. It’s actually made in Chicago by artist Nancy Rosen. We visit her studio to learn more.

(Photo by Kelly Sikkema / Unsplash)

It’s winter, which means it’s flu season. We get a check-up on common misconceptions about the flu and flu shots with Dr. Marielle Fricchione, head of the Chicago Department of Public Health's immunization program.

The first national park quarter to be released for circulation in 2020 will feature the National Park of American Samoa, home to giant fruit bats. (Credit: United States Mint)

In just a few weeks, there’s a very good chance you’ll have fruit bats in your pocket. The United State Mint will release a quarter on Feb. 3 featuring the National Park of American Samoa, which is home to giant bats.

Ald. Stephanie Coleman, 16th Ward, speaks to Paris Schutz of “Chicago Tonight” at a town hall for the Englewood community on Tuesday, Jan. 14, 2020. (WTTW News)

Can one Chicago neighborhood overcome its political divisions to exert more influence in City Council? Five aldermen representing portions of Englewood held a historic town hall Tuesday to try and do just that.

Gov. J.B. Pritzker speaks with Amanda Vinicky of “Chicago Tonight” on Friday, Jan. 10, 2020. (WTTW News)

One year ago, Illinois got a new leader when J.B. Pritzker was sworn in as the state’s 43rd governor. Pritzker reflects on his first year in office and looks ahead to what’s next.