The Cambridge Science Festival, an annual week-long community celebration of STEM, will return this year September 23-29. Featuring activities, workshops, tours, debates, contests, talks, and more, the festival attracts over 50,000 visitors of all ages and backgrounds each year. The Festival Guide lists dozens of events for each day, including a demonstration of quantum mechanics through juggling (9/23 4-5PM), a panel on democracy in the age of AI (9/24 7-9PM), interactive talks with neuroscientists (9/25 2-5PM), a biotechnological escape room (9/26 1-9PM), exciting science demonstrations (9/27 3:30-4:30PM), a kayaking educational tour of the Charles River (9/28 1-6PM), and an electromagnetic art workshop (9/29 12-4PM). Admission is free.