Today is the birthday of Michael Pollan, author of The Omnivore's Dilemma, The Botany of Desire, and most recently, In Defense of Food.

Michael has been a good friend and adviser to The Kitchen Sisters and when we were producing our story, Deep-Fried Fuel, about biodiesel made from farm crops and recycled restaurant grease, we spoke with Michael and asked him to weigh in on the rise of biofuels. Take a listen to this Kitchen Conversation with Michael Pollan.