Late last night and early this morning, I watched another iTunes movie rental that is about to expire: King Corn, a documentary by two recent college graduates who spend a year in Iowa growing an acre of corn and attempt to follow it through the food supply chain. As in Super Size Me, the focal point of the film is as political as it is about nutrition: how American agricultural policy since the 1970s has influenced the prominence of high fructose corn syrup and other corn by-products in the American diet.
