Watch the May 1, 2017 full episode of "Chicago Tonight."

Robert Nelson’s at-times tumultuous tenure as Chicago’s “harbor boss” is chronicled in his new book “Dirty Waters: Confessions of Chicago’s Last Harbor Boss.”

For migrating birds, Chicago can be a dangerous place. But scientists, architects and volunteers are now teaming up to make the city a leader in bird-friendly design. The story is told in WTTW's online series “Urban Nature.”

Local author Jennifer Keishin Armstrong on the cultural impact of the TV show “Seinfeld.”

Viewers respond to Gov. Bruce Rauner’s statements on the state of Illinois’ finances.

Could heightened tension on the Korean Peninsula lead to a confrontation with North Korea?

Contemporary art with Mexican roots: Celebrating 30 years at Chicago’s National Museum of Mexican Art.

Watch the April 26, 2017 full episode of "Chicago Tonight."

New technology lets police investigate whether drivers were using their cell phones moments before an accident. Could it curb texting while driving?

Many believe there is a fault line that divides Chicago, pitting brother against brother in a long-standing crosstown rivalry. But a viewer wonders if that historic boundary is a myth.

President Donald Trump’s tax plan was formally rolled out Wednesday. As promised on the campaign trail, the plan includes several business-friendly tax measures.

Gov. Bruce Rauner sits down with Chicago Tonight correspondent Amanda Vinicky to discuss his agenda for public schools, the state budget crisis and why he drops the “g” when he speaks.

Watch the April 25, 2017 full episode of "Chicago Tonight."