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He first became head of the Democratic Party of Illinois in 1998. Despite his longevity, House Speaker Michael Madigan isn’t a beloved figure.

Watch the April 20, 2018 full episode of "Chicago Tonight."

While talk of building a new express train to O’Hare heats up, we explore a little-known line that already goes there.

The young musician joins us in conversation and performance ahead of her Chicago professional debut with the Chicago Sinfonietta next month. 

Government officials from the U.S. and the United Kingdom warn that Russian hackers are targeting consumer and business routers. How to protect your devices.

The Cook County circuit court clerk talks about her surprise run for mayor of Chicago.

A rare blood disorder called thalassemia requires regular blood transfusions, but gene therapy may change that, according to a new study.

April is “Save Abandoned Babies Month” in Illinois. Chicago police and fire officials hope to raise awareness of the state’s safe haven law in the hopes of saving infant lives.

How a donation of nearly 800,000 tablets of vitamin K can help treat severe bleeding related to the use of synthetic cannabinoids.

A conversation with NASA research scientist Rosaly Lopes, who will be recognized this week at an event celebrating women in space science. 

A team of scientists was exploring a rocky patch of ocean floor when they found something that shouldn’t have been there: octopuses – lots of them.

Acknowledging the existence of “gender fluidity,” the 45th annual Non-Equity Jeff Awards nominations for performance are now nonbinary.

The work of both composers shares the Chicago Symphony Orchestra’s current program led by Maestro Riccardo Muti. And the result is a most winning mix of opposing musical temperaments.

The Windy City is the first in the nation to require tobacco health warning signs at the doors of all tobacco dealers. The new law also prohibits all free sampling of tobacco products.

Chicago is the country’s 22nd most polluted city, according to a new study of air pollutants by the American Lung Association. 

Eddie Arruza and guests discuss whether there’s a newspaper war brewing in Chicago.

Cook County Clerk Dorothy Brown joins the race for mayor. A federal appeals court says the federal government may not withhold funding from so-called sanctuary cities. And the U.S. Supreme Court denies an appeal from Rod Blagojevich.

The Chicago Police Board may seek to fire an officer who shot and killed two people during a domestic disturbance call in 2015.

Watch the April 19, 2018 full episode of "Chicago Tonight."

May-Ling Ho-Shing is a survivor of the Feb. 14 shooting at Marjory Stoneman Douglas High School. The 17-year-old shared a message Thursday with students at Thornwood High School in South Holland.

Grace Kennan Warnecke, the daughter of legendary American diplomat George Kennan, talks about her new memoir.

The actor known for his role as Dwight Schrute on NBC’s “The Office” talks about his dual roles in Matthew-Lee Erlbach’s new play “The Doppelganger.”

State Sen. Sam McCann enters the race for Illinois governor as a Conservative Party candidate.

Are selfies the new autograph? A local company connects celebrities with their fans through personalized videos.

CPS CEO Janice Jackson talks with us about school funding and investigations into special education and school cleanliness. 

In an effort to reduce plastic waste, the White Sox have become the first team in Major League Baseball to get rid of disposable straws for nearly an entire season.