AdvertisementOnline Retail Boom Means More Warehouse Workers, And Robots To Accompany Them07:21Download AudioResumeJune 19, 2017Sam HarnettQueena KimfacebookEmailRobots move racks of merchandise at an Amazon fulfillment center in Tracy, Calif. When a robot finds its storage unit, it glides underneath, lifts it up and then delivers it to a worker. (Getty Images)