What is a robotic razor fish teaching scientists about building better robots? Why are Argonne scientists going down to the South Pole? And how can a tiny laser boost high-speed data transmission? Our science guy, Neil Shubin, has those stories and more research news in this edition of Scientific Chicago. Read an article.

Deerfield-based Walgreens opens its first totally green “Net-Zero Energy” store in Evanston. We take a tour and go behind the scenes to see what makes this an ultra environmentally friendly store, producing all of its own energy with solar panels and wind turbines. Watch web extra videos and view a slideshow.

Pulitzer Prize-winning historian Doris Kearns Goodwin joins us to talk about her latest epic biography on the presidencies of Teddy Roosevelt and William Howard Taft that brought radical change to America. Read a book excerpt.

Two Chicago women are set to become Illinois' first ever same-sex married couple, and it will happen seven months before same-sex marriage can officially begin in the state.

So far, Tio Hardiman is the lone Democratic challenger to incumbent Gov. Pat Quinn.

Once or twice a year, a show is so breathtaking that it must be seen a second time. And you really have to see it in the theater -- once it closes, it’s gone. DVDs or on-demand cannot capture the live experience of sitting in the dark, bonding with the strangers onstage you seem to know so well. Read the Artbeat blog.

Today is the first day to file petitions to run in Illinois' 2014 elections. Carol Marin and her guests check in on the governor's race and the other primaries.

Author James Swanson discusses his new book - End of Days: The Assassination of John F. Kennedy - chronicling the fateful day 50 years ago in Dallas, Texas. Read an excerpt.

More than 2 million Illinois residents had their food stamp benefits cut this month. We talk with some DuPage County residents struggling to put food on the table.

The Bears fall to 6-5 after an ugly, penalty-plagued loss in St. Louis. James "Big Cat" Williams breaks down the shoddy run defense and Josh McCown’s third start this season. Watch a web extra video.

We share what you had to say about Chicago Tonight's American Graduate Special in tonight’s viewer feedback.

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

Eddie Arruza and his panel of journalists share some thoughts and reflections on the 50th anniversary of the assassination of President John F. Kennedy. Watch the web extra video.

A holiday parade, the Chicago Book Expo, and a Food Film Festival; Chicago Tonight knows what’s going on this weekend.