Traveling the state of Illinois has resulted in the most comprehensive survey yet on the birds of Illinois. We talk to a leading ornithologist about 100 years of change among the state's feathered residents. More information about the book

Had you even heard the term "thundersnow" before last week's blizzard? University of Chicago Paleontologist, author Neil Shubin joins us to talk about that phenomenon. Jay Shefsky has the story. National Geographic explains a thundersnow

The ACLU is concerned over the number of surveillance cameras placed around the city. Chicago officials, however, see them as an important safety tool. Eddie Arruza reports on the controversy. Huffington Post article about the dispute

A new web-based program has been designed to help commuters make their train on time. Nick Shields has the story. Train Tracker beta page

This week on Chicago Tonight: The Week in Review, the Blizzard of 2011 takes Chicago by storm, absolutely paralyzing the city. The third largest blizzard ever caused complete chaos on Lake Shore Drive, with hundreds of stranded drivers and abandoned cars. As the city continues to dig out, some blame city officials for not shutting down the historic thoroughfare sooner. Meanwhile, the mayoral race turns nasty with Carol Moseley Braun accusing opponent Patricia Van Pelt-Watkins of being a crack addict -- then apologizing to her opponent.

Perhaps you're wondering when the city will clear your street. We take a look at how the city's removing snow on the side streets. Ash-har Quraishi has the story.

Elizabeth Brackett has the latest on the city's continuing efforts to clean up the mess left behind by the Blizzard of 2011. Watch Elizabeth Brackett's blizzard home video

Where did all these cars go overnight? We show you how the great Lake Shore Drive "car rescue" effort is working. Paris Schutz tells that story. Locate your stranded car

From the inside of a car on Lake Shore Drive, to a nearly naked romp in the snow; we look at YouTube to see how people across the region captured the blizzard on home video. Your blizzard videos

Northwestern University is launching the Knight News Innovation Laboratory here. Using a combination of journalism and computer science, this new initiative hopes to improve the way stories like the Blizzard of 2011 are reported. Chicago Tribune story about Knight Innovation Lab

The second part in our series about a historic Chicago snowstorm, featuring harrowing tales of some expectant mothers and the troubling side of the decades-old blizzard.

The blizzard's whiteout conditions are slamming Chicago commuters. The meteorologist-in-charge of the National Weather Service's Chicago bureau gives us the latest on what is being labeled a potentially "life-threatening" blizzard. National Weather Service: Chicago

As the massive snowstorm hits Chicago, the city says it is prepared. Elizabeth Brackett has the latest storm details.

Will the city shut down because of the snow? Ash-har Quraishi has the latest on weather-related cancellations and closings. Chicago Emergency Closings

Find out how the blizzard is going to impact Chicago companies when Kris Kridel, of WBBM Newsradio 780, joins us to look at the week in business.

The massive 2011 snowstorm has sparked comparisons to what many remember as the greatest storm of all: the famed blizzard of 1967. A few years ago, the late John Callaway brought us this remembrance of that historic event.