It's a first for Chicago -- all neighborhood libraries are now closed every Monday. Elizabeth Brackett and her panel talk about why, and if it could change.

CME is being investigated after client funds go missing at MF Global.

It's a big song and dance today for a brand new $17 million building for the Old Town School of Folk Music. We take a look inside, and see why the mayor and other local officials are singing its praises.

Star of the screen and stage, Idina Menzel, joins us to talk about her latest PBS Special, premiering exclusively on WTTW -- Idina Menzel LIVE: Barefoot at the Symphony.

Democrat: Mary Jane Theis, Aurelia Marie Pucinski, Joy Virginia Cunningham, Thomas Flannigan, John Tully, Tom Courtney; Republican: James Gerald Riley

Eddie Arruza and his panel of journalists discuss the week's top headlines.

Need some ideas for what to do this weekend? Chicago Tonight knows what is going on!

2011 marked the year the U.S. Space Shuttle program came to an end, but NASA's unmanned exploration of space remained at full throttle. We look at some of last year's astronomical achievements and what scientists are eyeing in the year ahead.

The arctic nomad known as the snowy owl is rarely seen in Chicago in the winter. But this year is different. Ash-har Quraishi explains why the great white owl is visiting, and how you can help name one.

Need tips on how to stay healthy in 2012? Dr. Terry Mason, Chief Medical Officer for Cook County Health & Hospitals System, joins us with several health recommendations for Chicagoans. Got any questions for Dr. Mason? Ask them here. Please also join us for a live web chat during and after the segment.

Oxygen is being used to treat sports injuries, diabetics, and cancer patients. Is it the new wonder drug or a bit of hot air? Paris Schutz has the story.

A street sign but no street? Usually, it's the other way around.

Marimba music fills a South Side church and creates opportunities for young musicians. We have the story.

We asked you what steps the Bears should take for a successful 2012 season. We read what some of you had to say in Viewer Mail.

And they're off. After the first hurdle, it's Mitt Romney and Rick Santorum neck and neck.