The public is invited to a free screening of the documentary "What We Learned From Our Grandparents" at 7 p.m. Wednesday, May 27, in Smith Hall of Old Main, 30 N. Brainard St. The film about Guatemala is a new episode in a series produced by North Central College professors Matt Krystal and Hale Ekinci and features students, faculty members and their studies and research. The event is sponsored by North Central College's Office of International Programs and Cultural Events committee.