The Illinois House passed a medical marijuana bill by a 61-57 vote.

The FBI says it will go to "the ends of the Earth" to find those responsible for the Boston Marathon bombing. We hear from security and terrorism experts on what clues we know so far, and how agencies plan for similar attacks.

"Building Bridges" was a hallmark of the 14-year tenure of Ireland's former President Mary McAleese. She joins us to talk about her legacy, as well as her support for women priests and gay marriage.

We hear what you had to say about recent stories when we read some of our viewer feedback.

We take a look at the political career and legacy of Chicago's first African-American mayor, Harold Washington.

Harold Washington in a January 29, 1985 interview with John Callaway on Chicago Tonight.

Bruce DuMont hosts a conversation about reform in Chicago with Mayor Harold Washington and Crain’s Chicago Business publisher Joe Cappo on a Chicago Tonight episode from August 29, 1984.

Harold Washington and John Callaway in the very first episode of Chicago Tonight on April 24, 1984.

Mayor Harold Washington answers audience questions in Chicago Feedback, hosted by John Callaway on January 17, 1984.

Mayor Harold Washington discusses the city budget with John Callaway on Nov. 16, 1983 in an episode of Callaway Magazine.

John Callaway moderates Round 3 of the 1983 mayoral debate between Harold Washington, Jane Byrne and Richard M. Daley.  

Harold Washington and John Callaway in a March 14, 1977 episode of John Callaway Interviews.

Joel Weisman and his panel of journalists discuss the week's top headlines.

Joel Weisman and his panel of journalists delve further into transportation issues impacting Chicago: O’Hare’s abysmal rating for February, increased digital advertising at O’Hare, and a new streamlined rental car system at Midway.

A group of Democratic ward bosses pick a replacement for convicted former Cook County Commissioner William Beavers. Spoiler alert: it wasn't Todd Stroger. Paris Schutz has more on who it is, and why the choice is raising eyebrows.

First Lady Michelle Obama makes an impassioned plea to Chicago business leaders to help solve the problem of youth violence here. Paris Schutz has the story.