Bikes geared for racetracks are making their way onto Chicago streets. We show you why more Chicagoans are riding without brakes.

Tonight, the Grant Park Music Festival begins its 75th season. We have a live performance from a group of singers from the Festival.

We take a sneak peek at the new movie about John Dillinger, "Public Enemies," as well as preview a few upcoming summer movies that you should know about. Filmspotting

We show you what's old and new at the Brookfield Zoo as it prepares to celebrate 75 years. Brookfield Zoo

Hedy Weiss reviews the highly recommended production of "Boleros for the Disenchanted," now on stage at The Goodman Theater. Boleros for the Disenchanted Up K of D

Rich Samuels takes us to meet some kids who are being taught how to fish in the city -- and learning much more than the art of angling. Fishing Chicago

Are you overwhelmed by the flow of emails to your mobile device? According to Cramer-Krasselt's cultural dictionary, you've been "blackburried." One of the dictionary's creators joins us to discuss the highlights of her company's latest lexicon. More definitions and information

The Chicago Botanic Garden's manager of school and community gardening, Eliza Fournier, stops by to offer some summer gardening tips.

Yesterday, we celebrated the life of our dear friend and colleague John Callaway. We share some of the heartfelt tributes from the service. Watch the full memorial service

On tonight's special edition of Chicago Tonight, Joel Weisman remembers broadcasting legend John Callaway, who passed away on Tuesday at the age of 72. Joel's panel includes:

In the second half of the program, we take a look back at highlights from some of John's most notable interviews. Memories of John collected from blogs and Twitter

What do the futurist temporary pavilions in Millennium Park have to do with Daniel Burnham's century-old Plan of Chicago? We find out when we meet the two acclaimed architects who are making their Chicago debuts with these cutting-edge buildings.

We talk to an author who thinks Chicago could lead the next urban revolution.

The golden age of radio is remembered each week on "Those Were the Days." We talk with host Chuck Schaden, and discuss how the show must go on despite his upcoming retirement.

What is the meaning behind the famous names listed on a building in the River West area? Geoffrey Baer joins us with the details on this and other Chicago history and trivia in tonight's edition of Ask Geoffrey.

We meet a man who rides his bike no-handed for the entire length of the Northside lakefront bike path and in some pretty tough situations.