This week on Chicago Tonight: The Week in Review, Mayor-elect Rahm Emanuel-backed candidates win big in Tuesday's aldermanic runoff election, and he also responds to emperor claims. Mayor Daley and Emanuel speak out against concealed carry legislation. Meanwhile, Caterpillar, one of the state's largest manufacturer's says it will stay put in Peoria. And in sports, the Cubs and Sox open the baseball season, while the Bulls look to finish strong -- and on top of the Eastern Conference. Guests:

As the last high-rise at Cabrini Green comes down, an ambitious art project is coming down with it. We speak with the local artist who is working with students and former residents to commemorate the building and its legacy. More on the Story: Project Cabrini Green Project Cabrini Green website

This housing complex takes up several city blocks and bears the name of a very famous Chicagoan. Geoffrey Baer has the history of these Old Town apartments in today's Ask Geoffrey.

If you were taken with the alligator caught in the Chicago River last summer - this should have you chomping at the bit - so to speak. We preview Reptile Fest - with live animals in the studio! Event information Chicago Herpetological Society

What are the 10 "most threatened" historic sites in Illinois? The head of a group that wants to bring attention to these endangered landmarks tells us why they are at risk. More on the Story: Map and info of endangered landmarks Landmarks Illinois website

She's been an acclaimed designer for Tiffany and Co. for over 30 years. Artist Paloma Picasso is here to talk about her life, her work and her legacy. More on the Story: Paloma Picasso Timeline

What does the nuclear crisis tell us about Japanese culture? We talk to two experts about Japan's calm and collected nature in the face of tragedy. An article on Japan's stoicism after the earthquake

Everybody seems to agree that youth - especially "at-risk" youth - need mentors. But the problem with many mentoring programs is that the mentors don't stick around long enough. A Chicago mentoring program aims to fix that. More information on Aim High

Olympic figure skating champion Kristi Yamaguchi talks about becoming the first Asian American to win gold, and her new children's book. More on Kristi Yamaguchi's book

We hear what you had to say about recent stories when we read viewer mail.

Jay Shefsky takes us north of the border to the legendary Great Lakes Dragaway in Union Grove, Wisconsin. Great Lakes Dragaway website

This week on Chicago Tonight: The Week in Review, the CHA's most notorious public housing project, Cabrini-Green, is being torn down. Mayor Daley's trying to slash costs, this time by cutting rat patrol crews. Meanwhile, Chicago's Mayor-elect Rahm Emanuel and Cook County Board President Toni Preckwinkle discuss consolidating elections and health care service to save millions. Winnetka debates affordable housing there. Illinois schools are hoarding billions in cash. And in sports, baseball is back! Guests:

These prehistoric figures were part of a popular Field Museum exhibit for over 40 years before they were removed.   So where are they now?  Geoffrey tells us the surprising answer.

Two nuns took to the Chicago streets 43 years ago asking unsuspecting passersby a simple question--"Are you happy?"  Their candid exchanges were documented in a film airing tonight on WTTW.  We'll get a preview.

A truly inventive opera uses live actors, robots, and futuristic set design.  It's called "Death and the Powers" and we'll talk to the composer -- a cellist and inventor whose technologies helped create Guitar Hero.

This sport is all about moving from point A to point B over any obstacle. We'll show you how a group of Chicagoans are training in the harrowing discipline of Parkour.