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.

A new study examines the lives of Chicago's richest 1 percent. We explore how they spend their money and the issues they hold dear.

Mayor Rahm Emanuel touts ComEd's $2.6 billion investment in the new smart grid as good for the economy and good for consumers.

It's one business that has done well through the economic downturn.

There was no white Christmas for Chicago this year. So will it ever snow? We examine this winter's mild weather.

Maggie Babiarz came to Chicago alone at age 16 from a small village in the Polish highlands. Today, she leads the Megitza Quartet, a Chicago band that plays an energetic mash-up of traditional and original music from eastern and southern Europe. Jay Shefsky has the story.

It's the final countdown for GOP presidential hopefuls in Iowa. Mitt Romney, Ron Paul and Rick Santorum lead the pack.

Jerry Angelo is fired as General Manager of the Bears. We have the latest from Halas Hall and where the team goes from here, after a disappointing 8-8 season.