For the past 20 years, Michael Pollan has been writing books and articles about the places where the human and natural worlds intersect: food, agriculture, gardens, drugs, and architecture. He is the author of several best-sellers, including In Defense of Food: An Eater’s Manifesto and The Omnivore’s Dilemma: A Natural History of Four Meals. The latter was named one of the 10 best books of 2006 by the New York Times and the Washington Post.