Presidential candidates are competing for a win in Tuesday's primary in Wisconsin. James Warren of the Poynter Institute joins us to talk delegate math and what that means for the contenders on both the Democrat and Republican side.

Could a spice help rebuild Afghanistan? Could it decrease the production of poppy for opium? Meet three Chicago war veterans who have started a business with these goals in mind.

State Sen. Andy Manar plans to introduce a new school funding formula bill on the floor of the Illinois Senate on Wednesday. The bill, if passed, would shift money from wealthier districts to poorer districts—with cuts to wealthier districts being phased in over four years.

A groundbreaking study partially conducted at Lurie Children’s Hospital of Chicago found that a marijuana extract greatly reduced severe seizures in some children.

The weather may not reflect it, but it's opening day for baseball. There's big time expectations for Chicago's long-time losing Cubs. WBEZ's Cheryl Raye Stout and Danny Ecker of Crain's Chicago Business have the stats on how the season's shaping up for the Sox and Cubs.

Crews are working around the clock to prepare Wrigley Field for next Monday's home opener. What will be ready to go, and what will continue to be under construction through the season?

State lawmakers return to Springfield this week to vote on a number of measures, but not on the agenda is the No. 1 topic of discussion—the state budget that should have gone into effect last year.

As Mayor Rahm Emanuel does an end-run around his own civilian police board to appoint a new interim police chief, “Chicago Tonight” asks a panel of aldermen to assess the power of the mayor in a post-Laquan McDonald world.

Crowdfunding is helping some Chicago-based businesses get a running start. But some entrepreneurs say that money isn't everything.

The Chicago Botanic Garden has named Jean Franczyk as its new president and CEO. The South Side native returns to Chicago after working in London for 10 years. She joins “Chicago Tonight” to discuss her new role at the Chicago Botanic Garden.

In 1920, the Ku Klux Klan was a small, disorganized group with just 3,000 members in Alabama and Georgia. Then a public relations firm saw an opportunity to make a bundle by building the Klan. Dale Laackman's book, "For the Kingdom and the Power: The Big Money Swindle That Spread Hate Across America" tells the little-known story.