The Museum of Science and Industry (57th and Lake Shore Dr.) hosts LabFest!, an all-day interactive science festival, on September 20 as part of the yearlong Science Chicago project, which gets under way this month. Scheduled are more than 50 indoor and outdoor exhibits, experiments, games, and shows, including a chemistry demo with real explosions. Hours are 9:30 AM to 4 PM. Go here for a breakdown of the day's schedule. LabFest! and general museum admission will be free.
For a schedule of other Science Chicago events and tips on science projects you can start at home now, go here.