PodPonics Inc. employees harvest lettuce inside of a pod farm container in Atlanta, Georgia, U.S., on Friday, Aug. 12, 2011. "There's a major trend that has serious legs," said Matt Liotta, chief executive officer of PodPonics Inc., which will start growing watercress, arugula and other lettuce varieties hydroponically (in water, without soil) in recycled shipping containers on eight acres outside Hartsfield-Jackson Atlanta International Airport in the next two months. Photographer: Chris Rank/Bloomberg via Getty Images
