We talk with Chicago Tribune’s Pulitzer Prize-winning architecture critic Blair Kamin about the article series, “Designed in Chicago, Made in China” that details the rapid urbanization of China and the role Chicago architects play in the expansion. View a slideshow of China's urbanization efforts.

A musical, a historical exhibit and a dance camp; Chicago Tonight knows what’s going on this weekend.

Clowns are funny. Clowns are scary. Clowns are divisive – people love ‘em or hate ‘em.

It’s the earth’s largest freshwater resource. But what will happen in the next 100 years to the Great Lakes and the Great Water Basin? We talk with Phil Enquist, an Urban Designer, about sustainability, strategies, and about urban design aimed at eliminating waste and to ensure fresh water for future generations. View a slideshow.

Maria Nezhdanova is a 13-year-old singer from Sochi, Russia who will join us with a performance in studio. She is currently experiencing American culture as a guest of the Chicago Language Travel Company, and she’ll perform as a special guest for the Old Town School of Folk Music on March 5. Listen to an audio clip of her singing and watch a web extra performance.

A free new app is a fun and easy way to improve your writing. Brothers Ben and Adam Long created a program that aims to simplify your writing in the style of Ernest Hemingway.

We meet a man from the west side of Chicago who is trying to combat the gun violence in his community with a series of short films on YouTube called "Think Before You Shoot." Watch the short films.

We revisit Jay Shefsky's profile of Norma Gatto, a suburban woman who has turned her house into a glass mosaic masterpiece. Watch web extra videos and view a slideshow of artwork.

One of the world’s foremost interpreters of Stephen Sondheim’s work joins us to talk about his latest projects. Director Gary Griffin details his unprecedented plans to stage two musicals at Chicago Shakespeare Theater – Gypsy and Road Show. Read an interview with the theater's creative producer.

This Train Wreck isn’t really a disaster – quite the opposite – but it’s about a disaster: the tragedy that occurred in 1918 near Hammond, Indiana when an empty U.S. Army troop train crashed into a fully-loaded circus train stopped on the tracks.

A new book details the life of one of the most enduring artists in popular music: Mavis Staples. We revisit a conversation with author and Chicago Tribune music critic Greg Kot about his biography, I’ll Take You There: Mavis Staples, The Staple Singers, and the March Up Freedom’s Highway. Read an excerpt.

We revisit a story about the newly reopened Block Museum on the campus of Northwestern University, including a show of photographs by master photographer Edward Steichen and Polaroids by Andy Warhol. Watch a web extra video.

We go behind-the-scenes at the Joffrey Ballet to find out what it takes to prepare a world premiere dance.

We go to the WTTW vault to revisit John Callaway's 1982 interview with comedy legend and TV pioneer Sid Caesar, who died yesterday at 91. Watch the entire 60-minute conversation with John Callaway, as well as a 1986 appearance by Caesar on Chicago Tonight.

Nicholas Epley, Professor of Behavioral Science at the University of Chicago, joins us to discuss his new book, Mindwise: How We Understand What Others Think, Believe, Feel and Want.

A little bit of London is hidden on Chicago’s north side – where can you find this charming row of homes? Find out in tonight’s Ask Geoffrey.