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Chad Estep has been charged with attempted first-degree murder and aggravated battery. (Chicago Police Department)

Chicago Police have arrested a man they say pushed a stranger onto the tracks at the Washington Blue Line station in early August.

Bill Graham between takes during the filming of “A '60s Reunion with Bill Graham: A Night at the Fillmore,” 1986. (Courtesy of Ken Friedman)

He helped to define rock ‘n’ roll in the 1960s—and his life was a forged as a child in Nazi Germany. We explore an exhibition about Bill Graham at the Illinois Holocaust Museum.

(Courtesy ©Alaska SeaLife Center)

Shedd Aquarium experts are among those caring for a whale calf rescued Sept. 30 in Alaska’s Cook Inlet. The calf belongs to a critically endangered population of beluga whales.

Red-headed woodpeckers collected near the Des Plaines River in Cook County, Ill., in 1901 (top) and in Braidwood, Ill., in 1982 (bottom). (Courtesy of Carl Fuldner and Shane DuBay)

Researchers analyzed 1,000 birds collected over the last 135 years by the Field Museum and other institutions to track the amount of soot in the air of Rust Belt cities. 

Ali loved a crowd, and often found one on 79th Street in Chicago, near the offices of Muhammad Speaks and the popular Tiger Lounge. (© Lowell K. Riley)

A Chicago author tackles the complex life of Muhammad Ali in a new biography with some fascinating revelations.

Former IPRA and COPA chief Sharon Fairley officially tosses her hat into the race for attorney general. The latest on who she could face.

Whether you’re a night owl or an early bird, your sleep is regulated by your circadian rhythm. A sleep expert helps unravel the mystery of our internal clock.

Watch the Oct. 10, 2017 full episode of "Chicago Tonight."

(Meagan Davis / Wikimedia Commons)

Though the state of Illinois finally got a budget this summer, it still has billions of dollars in unpaid bills, and the amount keeps changing.

Cubs fan Tim Leahy reacts to Tuesday’s postponement.

Fans had just enough time for a couple beers and hot dogs before Game 4 was postponed. “I think it’s terrible,” said one fan Tuesday afternoon.

It’s been just over two months since Cook County began charging a penny-an-ounce tax on sugary drinks. But it may not last much longer.