For two months in 2012, longtime Iola, Kansas, resident Mary Ross trudged through the sweltering heat, waving gnats from her view as she walked door to door with a petition. It was the hottest summer since moving there with her family about 30 years ago, but Ross was determined to gather signatures requesting a grocery store be established in the small rural town of fewer than 6,000 people. Iola had lost its last independent grocery store four years earlier, shortly after the Wal-mart Supercenter—with its own expansive aisles—came to town and drove out all of the competition.In October, Iola’s first grocery store in nearly a decade broke ground, thanks to a unique public-private partnership. Allen County agreed to sell property for it at a steep discount to G&W Foods Inc., a Missouri-based chain with stores scattered throughout the region. “Basically, our community said that having a supermarket on this site is a priority, and we’re willing to put some skin in the game,” says David Toland, executive director of Thrive Allen County, a health and wellness center. But the problem is bigger than Iola.