A free screening of the documentary film Open Sesame – The Story of Seeds will be shown at 7 p.m., July 24, at the Metcalf Auditorium at Rhode Island School of Design Museum, and at 6 p.m., July 30, at the William Hall Library, in Cranston. Filmmaker Sean Kaminsky exposes one of the world’s most precious resources, seeds, and how they are at risk, what is at stake and what can be done to protect the source of nearly all our food.

Location: Metcalf Auditorium at RISD Museum, 20 N. Main St., Providence, and William Hall Library, 1825 Broad St., Cranston. Reserve a seat at OpenSesame-PVD.EventBrite.com, OpenSesame-Cranston.EventBrite.com and SeedSavingWorkshopRI.eventbrite.com.