What will we eat in a bigger, hotter and smarter world? Climate models show that global crop production will continue to decline due to drought, heat, and flooding. Meanwhile, the world’s population is expected to grow another 30 percent by midcentury. So how, really, will we feed nine billion people sustainably in the coming decades? Hear how Amanda Little spent three years traveling through a dozen countries and as many U.S. states in search of answers to that question.