On this edition of Chicago Tonight: The Week in Review with Eddie Arruza, the polar vortex hits Chicago again. Temperatures plummet, schools close, and flights are canceled. In his annual state of the state address, Gov. Pat Quinn makes the case that Illinois is on the road to recovery. Chicago officially has the worst pension debt in the country among major cities. Libertyville-based Motorola Mobility is sold for almost $3 billion to Chinese company Lenovo. And in sports, the Northwestern football team leads a movement to unionize. And the Bulls and Blackhawks try to win on the road.

Guests:

- John McCarron, Chicago Tribune

- Dana Kozlov, CBS-2 Chicago

- Craig Dellimore, WBBM Newsradio 780 and 105.9FM

- Danny Ecker, Crain’s Chicago Business

Watch our panel’s web-exclusive conversation in Web Extra: The Week in Review: 1/31.

Here is a roundup of Chicago Tonight's web stories from this week:

Monday, January 27:

-Polar Vortex Returns to Chicago

-Tom Skilling on City's Record Lows

-Medical Marijuana

-Chicago Pushes For More Vaccine Coverage

-Medicaid Expansion in Illinois

-Pat McGann

-Viewer Feedback:Boot Camp & Pensions

Tuesday, January 28:

-Impact of School Closings Due to Cold Weather

-Pension Reform Hits Another Snag with Suit

-Diamond Semiconductors

-Swimming at Promontory Point

-Web Extra: Update on Winter Swimmer

-David Broza

Wednesday, January 29:

-Gov. Quinn Delivers State of the State Address

-State of the State Analysis

-State of the Union Analysis

-CountyCare

-Joe Swanberg

-Ask Geoffrey: 1/29

Thursday, January 30:

-Lawmakers React to Quinn's State of the State

- Unionizing College Football

-Scientific Chicago with Rabiah Mayas

-Hedy Weiss: Theater Reviews

-Wright's Winslow House

-Viewer Feedback:Pension Reform Lawsuit

Friday, January 31:

- Web Extra: The Week in Review

- Weekend Events Around Town: 1/31-2/2

- Donald Orseno Named Metra’s Executive Director

- Vanecko Gets 60 Days in Plea Deal for Koschman Death