Some people draw a straight line from cheap, subsidized corn prices to the obesity epidemic and the accompanying high rates of diabetes and heart disease. Anna Lappé, co-founder (with her mother, Frances Lappé) of the Small Planet Institute and author of Grub: Ideas for an Urban Organic Kitchen and Nina Planck, former director of New York's Greenmarket and author of Real Food: What to Eat and Why, discuss whether or not higher food prices means we’ll eat healthier food.