Greg Page, former CEO of Cargill, the largest privately-held company in America, talks to EconTalk host Russ Roberts about the global food supply and the challenges of running a company with employees and activity all over the world. Page talks about the role of prices in global food markets in signaling information and prompting changes in response to those signals. Other topics include government's role in agriculture, the locavore movement and genetically modified organisms (GMOs).