How did ethics become a…

How did ethics become a staple of contemporary food writing? An examination of the many recent food books, such as The Omnivore’s Dilemma, from the Columbia Journalism Review. "Are, then, these debates about the ethics and politics of food largely a pastime of a tiny elite–grist for editors’ dinner parties but of tiny relevance to most consumers, who rush to the nearest market and grab what they need?" Or do they indicate a profound change underway in America around what we grow and consume? [thanks Kathleen!]