Chicago Tonight Correspondent Elizabeth Brackett is currently in Nairobi, not far from Westgate Shopping Mall, the site of a terrorist attack launched by Islamic radicals that killed dozens of shoppers and injured more than 170 people. Watch web extra interviews.

Looking back at a couple of influential dancers, and looking ahead to a weekend dance concert.

Still gathering stories on Janis Joplin's final Chicago-area performance...

Four suspects are in custody for the mass shooting in Chicago's Back of the Yards neighborhood. Paris Schutz has the latest.

We take a closer look at what happened the night of the Back of the Yards mass park shooting, and examine Chicago's persistent violence, with Felicia Davis, Mayor Rahm Emanuel's deputy chief of staff, and Chicago Tribune reporter Peter Nickeas.

Just months after closing 47 Chicago schools, Mayor Rahm Emanuel's plan to build or expand other schools has drawn fresh outrage from teachers and parents. Phil Ponce talks with Chicago Teachers Union President Karen Lewis and Chicago Board of Education Vice President Jesse Ruiz about the issue.

Though the historical handshake between President Barack Obama and Iranian President Hassan Rouhani didn’t happen at the United Nations luncheon today, there’s already speculation another opportunity may be on its way, and relations between the two countries could continue to thaw. We talk with Middle Eastern political expert, Marvin Zonis. View a timeline of U.S. and Iranian diplomatic relations.

At half an acre, the rooftop garden atop McCormick Place West is the largest in the entire region. We revisit the backstory behind this little-known space. Read an article.

Frank Lloyd Wright’s apprentice brought the Prairie School of Architecture to Europe. We take a look at the innovations of architect Barry Byrne with Vincent Michael, the author of The Architecture of Barry Byrne. Read a book excerpt and view a slideshow.

Another look at a truly unusual performance by Eric Clapton -- with additional photos.

All eyes are on the U.S. Senate as a potential government shutdown looms. Paris Schutz has more on what Sen. Dick Durbin and Illinois members of Congress are planning to do.

Police are questioning people of interest in the shooting rampage that left 13 people injured in a south side park. We have the latest on what's become another Chicago violence story making international headlines.

In recent remarks, Pope Francis says the Roman Catholic Church has become “obsessed” with abortion, gay marriage and contraception.

The Bears pound Pittsburgh in primetime to remain undefeated. James "Big Cat" Williams joins us for his weekly post-game analysis. Watch a web extra video.

The Metropolitan Pier and Exposition Authority approved the design of the DePaul University basketball arena today. We talk with Pulitzer Prize-winning architecture critic Blair Kamin about the $173 million project, as well as his take on the controversial $51 million Illinois Capitol renovation project in Springfield. View a slideshow.