Dr. Marion Nestle is Paulette Goddard Professor in the Department of Nutrition, Food Studies, and Public Health and Professor of Sociology at New York University. She is the author of numerous books and publications and makes public appearances on the topics of nutrition and health. Her blog is Food Politics. She spoke to Evan about the USDA's new nutrition icon, My Plate, which replaces the food pyramid. Read more of her thoughts about the icon on her blog.