The Progressive: Michael Pollan has got people talking. His recent books, The Omnivore’s Dilemma: A Natural History of Four Meals and In Defense of Food: An Eater’s Manifesto, have captured the public imagination, setting off countless coffee shop discussions, dinnertime arguments, and oh-so-many blog posts. Even more impressively, his exploration of modern-day agriculture and the dysfunctional American diet has prompted his readers to look at their own eating habits with a new sense of understanding …