The U.S. space shuttle program has come to an end with the Shuttle Atlantis returning to Earth early this morning. Eddie Arruza talks to a former Chicagoan and shuttle astronaut on what the 135 missions accomplished and what's ahead for the U.S. space program. More on Robert Satcher Follow Satcher on Twitter NASA

Two sailors were killed in this year's race to Mackinac. We talk about what might have gone wrong with three sailors who weathered the deadly storm on their way to Mackinac Island.

What is Google+, and will it become a serious rival to Facebook? We talk about this, Tech Week coming to Chicago, and much more.

The worst is on the way. As hot as it's been, even hotter temperatures will settle into the Chicago area tomorrow and Thursday. At times it could feel as hot as 110 degrees. Eddie Arruza reports on how the City of Chicago is preparing for what could be dangerous weather.

In tonight's Scientific Chicago, Jay Shefsky reports on the University of Chicago and Argonne National Laboratory's collaboration to create sophisticated brain modeling technology to unravel the mysteries of epilepsy.

The National Weather Service has issued a heat advisory for Cook County and the surrounding area. What's causing the extreme temperatures, how long will it last and what do storms in the forecast mean? Ash-har Quraishi has the story on how to brave the heat wave safely.

Mayor Rahm Emanuel is pitting two private garbage companies against city workers for Chicago's recycling services. Carol Marin and her panel look at this and the showdown over work rules and 625 announced layoffs to close the city's budget shortfall.

In another milestone in space exploration, for the first time, a spacecraft has gone into orbit around a massive asteroid. An Adler Planetarium astronomer tells Eddie Arruza what the spacecraft is looking for and what mysteries it might solve.

From the inside of a car on Lake Shore Drive to a nearly naked romp in the snow, we take a look back at YouTube to see how people across the region captured the blizzard from Feb. 3, 2011 on home video. More on the Story: Watch your blizzard videos

This week on Chicago Tonight: The Week in Review, Monday's violent storm leaves a mess in its 75 mph wake and hundreds of thousands without power. It was a busy week at City Hall with Mayor Rahm Emanuel cutting city agency credit cards, elected officials' security details, huge vacation payouts and announcing layoff notices to 625 of the city's union workers. Illinois' leading real estate organization admits grossly overstating prices of homes sold in Chicago, possibly going back as far as 2008.

What happens when you mix puppets and opera? We go behind the scenes at one of the most technically sophisticated puppet shows in the country. Jay Shefsky has the story. More on the Story: Learn the origins of puppet opera and see photos Opera in Focus

Street violence is on the rise in Chicago and some groups are using social media to plan and execute their attacks. Carol Marin and her panel discuss the changing face of crime.

Radio personality Steve Dahl just announced he's offering subscriptions to his podcasts. The industry veteran joins us to discuss the changing landscape of communications.

Some South Side residents are angry over major construction projects and beach restoration along the south lake shore. Elizabeth Brackett has the story. Ald. Leslie Hairston List of South Side parks

ComEd has restored service to more than 600,000 customers affected by this week's power outages, but that leaves well more than 100,000 still without power. We talk with an official from ComEd about the progress of the restoration. ComEd Storm Center Outage Map Centers for Disease Control and Prevention: Power outage safety

Monday's storms left hundreds of thousands without electricity. ComEd has been working around the clock to restore power to customers but full restoration could take days. Ash-har Quraishi has the story.