A “zero waste” potluck. Bring food to share, a plate, utensils, and a beverage—-no paper products. There will be no trash cans available. The Sierra Club will provide a spiral cut ham. Open to members and guests with a silent auction, door prizes, and live music, at the Discovery Center, 40971 North Shore Drive in Fawnskin. Call Christie at 909-866-5006 for additional information or go to the website: sierraclubbigbeargroup.org.