Registration is now open for two Saturday-morning sessions of Science on Saturday, on February 24 at MIT’s Lincoln Laboratory (244 Wood Street in Lexington).   The topic will be The Rise & Fall of Pluto: How Science Progresses, presented by Jane Luu of Lincoln Laboratory. All children (5-17 years) must be escorted by an adult, and every adult must be escorted by a child or children.  Children under 5 are not admitted.  Admission is free but each person attending must be registered.  Space is limited, so register online soon for either Session 1 (9AM to 10:30AM) or Session 2: 10:45AM to 12:15PM). Register an adult first, then a child, then others. Adults must bring government photo identification.  See other rules on the registration pages. Due to construction, this event will be held in the cafeteria, accessed via the garage stairs instead of the main lobby.