Gear Up: The Science of Bikes — Ecotarium Bike Fest, May 18

Worcester’s EcoTarium will host a Bike Fest on May 18, 10AM-5PM, to celebrate the opening of its temporary exhibit, Gear Up: The Science of Bikes. Bring bikes and helmets for the obstacle course (for kids under age 12); see cycling demonstrations and tricks by Slapstick Science; attend bike fix-it clinics. Free with Ecotarium membership or paid admission (advance purchase here).