Whole Foods Market is the largest organic and natural retailer in the world. The co-founder and CEO of Whole Foods, John Mackey will offer a multimedia presentation of the past, present, and future of food. John Mackey will then join Michael Pollan in conversation, continuing in person the exchange of views the two have been conducting since the publication of Pollan's 2006 book, "The Omnivore's Dilemma."

Their correspondence, which has explored such issues as organic and local food, animal agriculture, and the role of Whole Foods, is available at www.wholefoods.com/blogs/jm/ and www.michaelpollan.com/article.php?id=80.