Charles Godfray is Hope Professor at Oxford University and Director of the Oxford Martin Programme on the Future of Food. He is a Fellow of the Royal Society and a Foreign Member of the American Academy of Arts and Sciences. In this talk he explores the challenge we face in feeding the earth's growing population and what this means for our security and the role of democracies. In the spirit of ideas worth spreading, TEDx is a program of local, self-organized events that bring people together to share a TED-like experience. At a TEDx event, TEDTalks video and live speakers combine to spark deep discussion and connection in a small group. These local, self-organized events are branded TEDx, where x = independently organized TED event. The TED Conference provides general guidance for the TEDx program, but individual TEDx events are self-organized.* (*Subject to certain rules and regulations)