A Gay Gene? Nature or nurture — what determines sexual orientation? We'll hear from a Northwestern researcher whose study could determine whether there's a gay gene. Learn more about the study. News Analysis with Elizaeth Brackett Five-year old Diamond Brownridge is clinging to life after a dental procedure Saturday left her in a coma. Elizabeth Brackett and her guests look at some of the questions all parents should ask before their children undergo dental procedures.

Big Box Controversy Mayor Daley has vetoed the big box ordinance. We'll have a report from Rich Samuels and hear from aldermen with opposing views on this contentious issue. Rahm Emanuel Congressman Rahm Emanuel sits down with Joel Weisman to talk about his new book, "The Plan," which he hopes will lead Democrats to victory in the upcoming elections.

Chicago Tonight: The Week in Review Mayoral candidates lining up, Mayor Daley still coy about his election plans, the changing face of State Street, AT&T hiking phone rates, Chicago Public Schools set to open next week, the White Sox nab wild-card lead, and Bears QB Rex Grossman finally finds the end zone. Guests:

News Analysis with Elizabeth Brackett Chicago Tribune foreign correspondent Paul Salopek is being held in the Sudan on charges of espionage. Elizabeth Brackett and her panel discuss the perils of reporting abroad. Political Hiring Interim Cook County Board President Bobby Steele bans political hiring. Rich Samuels will be here with the latest on allegations of clout at the county building.

Cook County Debrief Will Cook County join the city in getting a federal monitor overseeing its hiring practices? That's what Republican candidate for Cook County Board President is demanding. Eddie Arruza will have the latest on alleged patronage hiring at the county level. News Analysis with Elizabeth Brackett Mayor Daley weighs in on the city ban on foie gras. Elizabeth Brackett's panel includes the alderman who proposed the ban. Guests: Ald. Joseph Moore, Chris Robling, Paul Green

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.