It was a center of innovation and commerce for 32 years. And then it went dark, unused for another 32 years. Starting Friday, the Tower will be opened to the public for the first time ever following a major restoration. Eddie Arruza tells us it may be worth your while to make a special trip just north of the border. 

NBA Commissioner Adam Silver came down hard on L.A. Clippers owner Donald Sterling after a recording of his racist comments were made public. We discuss Sterling's lifetime ban and more with our panel. 

Conservation biologists Curt Meine and Stanley A. Temple discuss species extinction, the importance of biodiversity, and what we can do in Chicago to help out. 

Geoffrey Baer visits the John Hancock’s Crown of Lights to find out how the center makes its seasonal wardrobe changes in this week’s edition of Ask Geoffrey. He also sheds light on a shadow casting sculpture and why some city roads have both a street and a place.

There's a growing outcry over a plan to spend $100 million in state money to bring a Barack Obama presidential library to Chicago. Paris Schutz has the latest. View a map of all official 15 presidential library locations.

We take a detailed look at Chicago's selective enrollment schools, their impact and their effect on racial diversity in the schools. Elizabeth Brackett has the story. 

Housing prices in some Chicago and suburban zip codes are almost back to their 2007 peak prices, according to a new report. Dennis Rodkin from Crain’s Chicago Business tells us which areas are surging and which are still lagging. 

What does climate change and national security have to do with each other?  Everything according to science and military experts. We take a closer look on Tuesday’s Scientific Chicago.

Meet the brother-sister band that calls itself White Mystery. From their hometown of Chicago, the siblings export a raucous brand of rock n’ roll to a worldwide fan base. Guaranteed to be the loudest band ever featured on Chicago Tonight.

Governor Quinn floats a way to pay for Chicago pension reform that does not involve property tax hikes -- and the City Council is on board.  Paris Schutz has the latest.

Lawmakers are back in Springfield this week to debate, among other things, a graduated income tax, extending the temporary income tax, pension fixes and more. Joining us are State Sen. Daniel Biss (D), State Rep. Christian Mitchell (D) and State Rep. Tom Demmer (R). 

The Roman Catholic Church made history when it conducted the canonization of two popes on April 27. We take a look at the historic event, the process of becoming a saint. View our timeline of popes declared saints. 

Results show that new treatments for Hepatitis C do work -- but at a cost. Brandis Friedman has the story of the new drugs costing tens- of- thousands of dollars.