A customer in the produce section at Metro Foodland, one of the Detroit grocery stores participating in a healthy food incentive program for people with SNAP benefits. The store will add a section of specially marked local produce as part of the program. Courtesy of the Fair Food Network hide caption

itoggle caption Courtesy of the Fair Food Network

A vendor sells edible insects at Talad Thai market on the outskirts of Bangkok. The most popular method of preparation is to deep-fry crickets in oil and then sprinkle them with lemongrass slivers and chilis. NARONG SANGNAK/EPA /Landov hide caption

itoggle caption NARONG SANGNAK/EPA /Landov

A soybean field near Campo Verde in western Brazil in January 2011. Researchers argue that enough arable land is already under cultivation to feed the planet for the next several decades. Yasuyoshi Chiba/AFP/GettyImages hide caption

itoggle caption Yasuyoshi Chiba/AFP/GettyImages

A worker piles sacks of corn at a market in Guatemala City. Daniel LeClair/Reuters /Landov hide caption

itoggle caption Daniel LeClair/Reuters /Landov