Obama in Africa Illinois' U.S. Senator Barack Obama has visited Nelson Mandela's prison cell. We'll be joined on the phone by Sun-Times reporter Lynn Sweet, who is in South Africa, travelling with the senator on his journey through the continent.

Chicago Tonight: The Week in Review Democrats bicker at state fair, deportation battle at local church, former alderman Ed Vrdolyak targeted by the feds, downtown condo sales tank, statewide ACT scores on the rise, more than 10,000 public school kids homeless, the Sox get ready for the Twins, and the PGA championship tees off at Medinah. Guests:

News Analysis with Elizabeth Brackett Chicago now has the highest gas prices in the nation. Elizabeth Brackett and her panel discuss the reasons why. Guests: David Sykuta, Rebecca Stanfield

Cook County Democratic Committee Meeting It's official - Cook County Democratic committeemen elected Todd Stroger to succeed his father on the November ballot. Rich Samuels will bring us up to date on the race for president of the Cook County Board of Commissioners. News Analysis with Elizabeth Brackett Chicago public school students are having historic success, according to the latest test scores. But are the results skewed? Elizabeth Brackett and her panel, including Chicago Public Schools CEO Arne Duncan, take a closer look.

Cook County Board Update Correspondent Christian Farr has the latest on the saga of the Cook County Board, now that President Stroger has submitted a signed letter of resignation, clearing the way for the Cook County Democrats to choose a new candidate.

News Analysis with Elizabeth Brackett Although people often joke about having so-called "senior moments," a new Chicago study says they actually could be early signs of Alzheimer's Disease. Elizabeth Brackett and her panel will take up this new development.

Chicago Tonight is abbreviated tonight due to pledge. Chicago Tonight: The Week in Review New curfew crackdown punishes parents, maximum tax hike for public schools again, an attempt to oust John Stroger fails, Governor Blagojevich airs new negative commercials, Midway airport lands federal safety dollars, and the White Sox battle for first-place. Guests:

Chicago Tonight is abbreviated tonight due to pledge. Cook County Board Meeting Rich Samuels has the latest from the today's meeting of the Cook County Board of Commissioners. News Analysis with Elizabeth Brackett Elizabeth Brackett sits down for a conversation with Eileen Collins, America's first female shuttle commander.

News Analysis with Carol Marin A group of influential business and sports leaders met with Mayor Daley today, feeding the mounting buzz that Chicago could host the summer Olympic games in 2016. Carol Marin and her panel take a look at the chances. Guests: Marc Ganis, Marilee Stepan Wehman and Robert Baade

Chicago Tonight: The Week in Review 1,000 Chicago Public School teachers fired, the city prepares for massive immigration rally, Chicago's convention business relegated to third-place status, the Democratic candidate for state treasurer finally explains his family's ties to criminals, and the Bulls give the heat a home-court thumping. Guests:

News Analysis with Joel Weisman Is Governor Blagojevich's $10 million stem cell plan just a political ploy? Joel Weisman and his panel of pundits weigh in on the governor's plan and other hot political issues. Guests: Carlos Hernandez Gomez, Paul Green and Bruce Dold.

City Hall Scandal Mayor Daley responded today to the latest allegations of City Hall corruption. Rich Samuels has the mayor's remarks, as well as a barrage of reporters' questions the mayor didn't always answer fully. Read the Sorich Santiago Proffer here.

School Security Recent violence at Kennedy High School leads to students walking out in protest. Chicago Public School officials call the beating an "isolated incident", but the students think otherwise. Christian Farr joins us with more on the controversy. News Analysis with Carol Marin Katie Couric will become the first woman to solo anchor a network evening newscast, when she takes over at CBS in September. What does it mean for the future of network news? Carol Marin and her panelists will take up that question.

Corruption Trial The corruption trial of former governor George Ryan ...will... continue and jury deliberations ...will... resume tomorrow. Rich Samuels has details on how the judge is proceeding with two alternate jurors.

Chicago Tonight is abbreviated this week for pledge programming. Chicago Matters The funding of Illinois schools is one of the challenges that will face the next governor. Tonight, as part of our Chicago Matters series, "Valuing Education," gubernatorial candidates gives us their thoughts on what's wrong with school funding in the state and what needs to be done.

News Analysis with Elizabeth Brackett The competition for listeners among Chicago morning radio shows is fierce, and the advertising dollars at stake are enormous. Elizabeth Brackett's panel includes one of the city's top morning personalities, Q101's Mancow Mueller. Chicago Matters In our Chicago Matters: Valuing Education segment, we'll take a look at Governor Blagojevich's universal pre-school proposal and see what educators have to say about it.