In Lincoln's time, 80 percent of the U.S. population lived in rural areas and worked in farm-related jobs. Today, more than 80 percent of Americans live in cities, with less than 1 percent of the population claiming farming as an occupation. However, many city-dwellers are re-imagining the possibilities of farming in urban settings - growing their own food in empty lots and lawns, and creating healthier, stronger and more vibrant communities in the process. GROWING CITIES examines the role of urban agriculture in the United States and its potential for revitalizing cities and changing the way Americans eat.