We meet the founder of an organization that's using bicycles to improve the health, education and economic outcomes for overseas children. World Bicycle Relief

Sin in the South Loop? Geoffrey Baer has the details on the sordid side of Chicago history and more in tonight's edition of Ask Geoffrey. Chicago's Vice Districts

What is "freecycling?" The creator of freecycle.org says it helps keep more than 400 tons of waste out of the world's landfills every day, but could the concept also help people navigate the current recession? Christian Farr tells us more about freecycle.org, and talks with one of its Chicago-based volunteers. Chicago Freecycle

We meet a local craftsman who is a real-life guitar hero and is making music the old-fashioned way. Danche Guitars Eastern Blok

The 101st Annual Race to Mackinac Island is underway, with some boats already crossing the finish line in Michigan. 260 boats are racing and our own Geoffrey Baer is on one of them. We take a look back at his documentary chronicling the world's largest annual freshwater distance race.

We hear what you have to say about some of our recent stories when we read our viewer mail.

We honor the life of journalist Walter Cronkite, who died Friday at the age of 92.

Forty years after the Apollo 11 launch, we look at the inspiring legacy of the lunar missions and talk to an astronomer about the potential for the next giant leap -- a mission to Mars. Northwestern University Astronomy & Astrophysics Adler Planetarium

Tonight's panel discusses the week's top headlines: Governor Quinn passes a stop-gap budget; Mayor Daley lays off 431 workers after their unions refused to take furlough days off; families are in mourning all over again during the Burr Oak Cemetery scandal; Chicago on a Denver booting-blitz; the CTA cracking down on sexual harassment; the Cubs and Sox well-rested after the All-Star break; and the Blackhawks fire general manager Dale Tallon. Guests:

For the rest of the summer we'll be replaying the best of John Callaway's interviews over the years. Tonight we take a look back at a 1998 conversation with legendary movie reviewers Gene Siskel and Roger Ebert who launched their show right here at Channel 11 in 1975.

We have an update to a story we brought you a few years ago concerning so-called "food deserts" in Chicago -- areas that lack access to grocery stores and healthy food. Christian Farr talks with people who are fighting to make these "deserts" disappear.

We talk to Cameron Davis, the local man tapped by President Obama to help restore the Great Lakes. Chi-Town Daily News profile of Cameron Davis (06/22/09)

Did you know that the first modern airfield in the U.S. was located right outside Chicago? Geoffrey Baer has the details on that and more in tonight's edition of Ask Geoffrey.

We take a look back at John Callaway's 1998 Friday Night interview with legendary film reviewers Gene Siskel and Roger Ebert. Museum of Broadcast Communications on Siskel and Ebert

In an extended interview, Seneca Kern of WeFarm America explains how he is working to bring farms to people's backyards to help localize the food economy.  Focusing on the benefits for kids, he says it's both nutritious for their bodies and teaches them positive values.

Ladonna Redmond has been working for years to bring healthy food to communities with low access to that food.  In an extended interview, she tells Christian Farr why she thinks bringing nutritious food to these areas is essential, and elaborates on how she and others are working to help.