Head to the SLO Food Co-op for a chat with Author Jon Steinman about his book, "Grocery Story." Pick up a copy, get yours signed, or just join in on the conversation. Jon will lead a discussion on how food co-ops, as alternatives to corporate grocery giants, are spurring the creation of delicious local food economies and stronger communities, while changing the global food system for the better. Afterward, he will head to Cal Poly for a speaking engagement from 5:30-7 p.m.