Michael Pollan, author of The Omnivore’s Dilemma, and John Mackey, CEO of Whole Foods, continue their year-long public conversation about the future of organic food and agricultural sustainability. In front of a sold-out crowd at UC Berkeley on February 27, 2007, they cover some of the inconvenient truths about the world’s food systems. Mackey begins with a 45-minute presentation about unsustainable agricultural and food distribution practices, as well as Whole Foods’ efforts to improve them. (A note of caution: The audio lecture includes brief descriptions of animal cruelty and harsh human working conditions, and so may not be work- or family-safe.) He and Pollan then continue the discussion they started shortly after the publication of The Omnivore’s Dilemma, and which continues on their respective Web logs.