Social Health in the New Millennium; celebrates the career and scholarship of Steven Feierman, professor in the department of history and sociology of science; 3-6 p.m.; Terrace Room, Claudia Cohen Hall; free. RSVP: firstname.lastname@example.org. Also April 24, 9 a.m.-6:30 p.m.; rm. 402, Claudia Cohen Hall (History and Sociology of Science).
Donnybrook in Spring; work by current PennDesign fine arts photo, installation and performance seminar students; Gallery, Meyerson Hall; reception: 5:30 p.m. Through April 24.
Radio Massacre International; 8 p.m.; church sanctuary, St. Mary’s Hamilton Village; $20, $10/full-time students (The Gatherings).
Sweeney Todd: The Demon Barber of Fleet Street; Quadramics; 8 p.m.; Iron Gate Theatre; $10, $8/Locust Walk. Also April 16, 8 p.m. and midnight, and April 17, 8 p.m. (PAC).
Bureaucratic Centralism in Mexican Education; Carlos Ornelas, Columbia University; 1:30 p.m.; rm. 302, 3440 Market St. (Latin American and Latino Studies).