Bob Edwards presented a 45 minute discussion with Michael Pollan this weekend (8/25/2008) on his show Bob Edwards Weekend
http://www.bobedwardsradio.com/bob-edwards-weekend/.
Michael Pollan is the author of "The Omnivar's Delimmia", "The Botany of Desire" and his new book "In the Defense of Food: An Eater's Manifesto".
Great fun - hope you can give it a listen.