Jewish artist Bonnie Meltzer and Serena Barton will talk with the public about their work in the current show, "Driven to Extremes." Meltzer uses found objects to create new works of art that explore themes ranging from dating to global warming. Barton is a painter, whose canvases address a wide range of human issues. Through Aug. 26. For information, visit www.ondagallery.com. 3 p.m. Onda Gallery, 2215 NE Alberta St. 503-496-3922.