The Newton Free Library will host the Urban Search and Rescue Robotics Challenge on Thursday, March 22, 4-8PM. It’s a robotics challenge for Grades 11-12 presented by the Massachusetts Army National Guard and is based on real-life scenarios involving search-and-rescue robots. The event challenges competitors to engineer a robot that can navigate a unique obstacle course to locate and remove an object within a specified time, using heavy-duty, aircraft-grade aluminum elements, powerful drive motors, and wireless cameras. Online registration is required.