We share what you had to say about the pending Ashland Bus Rapid Transit project in tonight's Viewer Feedback.

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

Joel Weisman and his panel of journalists take on weather reporting in Chicago. Does local media over-hype the weather? Watch the web extra video.

Randolph Street's Holiday Market, an art show in Bucktown, and the Chicago Symphony Orchestra’s holiday concert; Chicago Tonight knows what’s going on this weekend.

We talk with the South African Consul General about an event giving Chicagoans a chance to mourn and celebrate Nelson Mandela.

A new investigation by the Better Government Association, with the Chicago Sun-Times, raises serious questions about a well-known Chicago congressman and how he handled a sizable grant from a special interest. Where did the money end up? And were constituents ill-served? Read the full BGA story.

An art museum digs deep into its collection and brings out rarely seen works, from Frederic Remington to Salvador Dali. We revisit a preview of Inventory_The EAM Collection at the Elmhurst Art Museum. Read an Artbeat blog and view a gallery.

What’s wrong with this picture of an old firehouse on Lake Street near Kedzie? Look closely at how the word “Department” is spelled. Geoffrey Baer is on a hunt for more misspelled signs in the Chicago area for an upcoming edition of Ask Geoffrey. If you know of one, please share the information here.

A huge lake freighter pulls up to storage facility along the Calumet River, poised to haul away piles of the controversial petroleum byproduct called "petcoke."  Elizabeth Brackett has the latest details.

Debate over an Ashland Bus Rapid Transit line is heating up as community meetings take place this week to gauge public sentiment. We talk with Ald. George Cardenas (12th) and Metropolitan Planning Council Vice President Peter Skosey about the advantages and challenges facing this long-term project. Read an interview.

Chicago's new bike share program was a hit with commuters this summer, but can it hold up during the winter? And what happens behind the scenes to make sure bikes are available and ready to go at one of the 300 locations throughout the city? Paris Schutz takes a rare look inside. Read an article.

Is a new City Council office the answer to curing the city's financial woes or just another layer of bureaucracy? Paris Schutz has the story.

The field of nanoscience -- the science of the very small -- is exploding and is likely to profoundly shape our future, impacting everything from energy production and storage to cutting edge, designer medicines. Here to help us separate the science from the science fiction is Dr. Amanda Petford-Long, director of the Nanoscience and Technology Division and the Center for Nanoscale Materials at Argonne National Laboratory.

The Bears are tied again for first place in the NFC North. James “Big Cat” Williams breaks down their latest win over the Cowboys, including Josh McCown’s stellar performance, and the receiving corps’ outstanding effort. Watch a web extra video.

President Obama and First Lady Michelle Obama leave on Air Force One to attend a memorial service for Nelson Mandela Tuesday as Illinois Attorney General Lisa Madigan recalls her year in South Africa while Mandela was imprisoned on Robben Island. Elizabeth Brackett has the details. Watch web extra videos about the anti-apartheid icon from WTTW's archives.