New numbers show that high school football participation in Illinois is at its lowest point in decades. We discuss the decline with a youth football coach and the son of former Chicago Bears player.

Talk of a possible city congestion tax is heating up. On Monday, the CEO of Uber said he supported the idea to help ease Chicago traffic and raise revenue. But how would it work, and could it drive away business?

Adler Planetarium astronomer Mark Hammergren explains how a space-based sentry can help detect asteroids that will pass near Earth.

Chicago’s third-tallest building, the Vista Tower, is being touted for it’s unique curvilinear-shaped structure. But it’s the engineering secrets you can’t see that really set this skyscraper apart.

A freight train bearing a flammable liquid used in solvents derailed in an Illinois suburb of St. Louis on Tuesday, causing a fire that sent thick, black smoke into the air and prompted the evacuation of nearby schools and residences.

At once eerie, astonishing and altogether fascinating, “Maria Callas in Concert” recently brought the legendary diva back to life for what was a singular and wholly uncanny performance.

The National Wildlife Federation warns that pollution from PFAS chemicals – often called “forever chemicals” because they don’t break down over time – could be one of the most serious threats facing the Great Lakes region. 

Watch the Sept. 10, 2019 full episode of “Chicago Tonight.”

A 20-year-old Wisconsin man is accused of manufacturing thousands of counterfeit vaping cartridges a day with THC oil for almost two years, running the operation with 10 employees, authorities said.

As pipe major of the Chicago Stock Yard Kilty Band, Matt McKee carries on the tradition of a pipe band that started nearly 100 years ago. We go for a look, and a listen, as the band competes at a Wisconsin festival.

A Cook County judge has rejected a so-called gag order in the case of a mother and daughter who allegedly murdered pregnant teen Marlen Ochoa-Lopez and cut the baby from her womb.

More business news is coming to “Chicago Tonight” starting this week. Through a partnership with Crain’s Chicago Business, we’ll offer a regular feature on the TV show every Monday through Thursday night.

Scientists in Spain have been analyzing so-called super-deep diamonds as a means to learn more about the formation of the Earth itself. Rabiah Mayas tells us more about that and other stories making science headlines.

The future of medical monitoring is taking shape in a laboratory just north of Chicago. We learn about a new generation of flexible electronics.

A DuPage County judge signed off on a consent order Friday allowing for Sterigenics to reopen but with stricter emissions controls. What exactly does the settlement allow – and how soon can Sterigenics be fully operational?