What: The School of Science hosts "Science Day." The event, in honor of Earth Day, features a talk on science entrepreneurship by Reza Zadno, president and CEO of Visiogen Inc. in Irvine, California, a company that focuses on developing innovative products for cataract and refractive patients. Science Day will also include a luncheon, tours of classrooms and laboratories, and experiment demonstrations by faculty and students.

When: Sunday, April 20, 11 a.m. to 3 p.m.

Where: Broussau and Galileo Halls, Saint Mary's College of California, 1928 St. Mary's Rd., Moraga

Contact: School of Science (925) 631-4409. RSVP required.