Jun Kaneko, the artist who created the newest public art addition on the Principal Riverwalk in downtown Des Moines, will speak at the Des Moines Art Center, 4700 Grand Ave., on Dec. 12. Kaneko will talk about his work and the public art project "Expansion", which can be seen at the HubSpot and Court Avenue Pump Station along the Riverwalk. The lecture begins at 6:30 p.m. The event is free and open to the public, but reservations are required. RSVP online or by calling 515-271-0313.