To a degree both engrossing and alarming, the story of fast food is the story of postwar Amerca. Though created by a handful of mavericks, the fast food industry has triggered the homogenization of our society. Fast food has hastened the malling of our landscape, widened the chasm between rich and poor, fueled an epidemic of obesity, and propelled the juggernaut of American cultural imperialism abroad. That's a lengthy list of charges, but Eric Schlosser makes them stick with an artful mix of first-rate reportage, wry wit, and careful reasoning.