Are 672 billion pounds of corn eaten in the US every year?

National Geographic magazine recently wrote that “people in the United States eat more than 672 billion pounds of corn per year, which breaks down to more than 2,000 pounds per person annually”.Is this really true? Tim Harford investigates all the things that we don’t eat, that are counted in this number. Presenter: Tim Harford Producer: Bethan Ashmead Latham Production co-ordinator: Katie Morrison Sound mix: Giles Aspen Editor: Richard Vadon