Enjoy the chance to visit the Museum of Science and Industry after dark. Participate in science activities and make science toys, go on a scavenger hunt and unroll sleeping bags next to a 727, giant heart or steps away from a toy-making factory.

Montreal's DynamO Theatre performs acrobatic theater. In Mur-Mur, a wall, with its graffiti and its secrets, alternates as a playground and refuge for five young characters. Performances are May 6-12.

Children can immerse themselves in backstage preparation, perform routines in center ring or manage the behind-the-scenes action of lights and sound. Plus, try making a circus balance toy or dress up like a clown.

Celebrate the return of wildlife to the Chicago River by adopting a fish, naming it (if they wish) and releasing it into the river. Fish wranglers will be on hand to assist.

Two unforgettable performances in honor of National Tap Dance Day, featuring Chicago tap talents such as M.A.D.D. Rhythms, BAM!, Mr. Taps, and FootworKINGz.

Through the discovery of exoplanets, we have learned our solar system is not alone in the universe. IN this new space show, learn how, with new instruments like the Kepler Telescope and rapidly improving technologies, the discovery of exoplanets puts us one step closer to finding an Earth-like world.

Learn about the American bicycle and Chicago's bike culture. The exhibition details the roots of America's most democratic and sustainable form of transportation and considers why human-powered locomotion could be the way of the future for our rapidly evolving urban environment.

Visitors go on an interactive journey through the world of ancient Greece, where they can meet the gods, experience ancient Greek daily life and interact with the epic poem The Odyssey through more than 25 engaging interactive components, including climbing into a 13-foot tall Trojan Horse. Kids play and learn as they navigate rocky caves and open seas on "The Odyssey: A Hero's Journey" and e-mail home their Hero Record, belt tunes in the Sirens Karaoke Cave, discover which Greek god they are most like, match wits with Aristotle in a game of 20 questions, test their arm wrestling prowess in the Gymnasium and marvel at a working replica of the Antikythera Mechanism, believed to be the world's oldest computer.

Watch men painted blue do unusual performance art and original slapstick comedy. It's fun to sit in the front, but remember to wear a plastic poncho to avoid the flying food and liquids. Buy tickets at the box office, online, via Ticketmaster or by calling (773) 348-4000.

Follow the captivating story of Jean Valjean as he struggles with the concepts of truth,  justice and redemption. This production spotlights the Studio BE Company Youth Ensemble and features the Studio BE orchestra. Performances at 7 p.m. May 4, 5, 10, 11, 12 and 3 p.m. May 6.