This week, a conversation with Rick Wartzman, about his new book, "Still Broke: Walmart's Remarkable Transformation and the Limits of Socially Conscious Capitalism." Given unparalleled access to Walmart executives for this book, Wartzman traces the history of the Bentonville, Arkansas retail giant and its recent efforts to transform itself. Wartzman uses this study of Walmart's relationship with its workers to raise larger questions about the nation's millions of minimum-wage workers Learn more about your ad choices. Visit megaphone.fm/adchoices