Amazon building its first-ever automated micro-fulfillment center

NASHVILLE, Tennessee — Amazon wants visiting some of its Whole Foods stores to feel more like shopping at a Walmart. The big picture: Both retail giants have been expanding into their traditional areas of weakness by leaning on their biggest areas of strength. For Walmart, that's meant adding more online delivery as well as in-store pickup to its highly successful stores. And for Amazon it's meant buying chains like Whole Foods and opening...