On this edition of StudioTulsa, we speak with Philip Howard, a professor of community sustainability at Michigan State University. He's also president of the Agriculture, Food, and Human Values Society, and is a member of the International Panel of Experts on Sustainable Food Systems. His new book, released earlier this year, is "Concentration and Power in the Food System: Who Controls What We Eat?" -- and, working from ideas set forth in this book, he'll give a free-to-the-public address here at TU tonight, Thursday the 22nd, beginning at 7pm. This talk -- called "Food & Power: How Corporations Shape What We Eat and Drink" -- is presented by TU's Oklahoma Center for the Humanities; it happens in Tyrrell Hall on the TU campus. As we learn on today's show, using the examples of beer, soytmilk, and bagged salads, Professor Howard's lecture will explain how and why big corporations increasingly shape what Americans eat.