Brad Kessler was a writer in New York City. He's still a writer, but now he lives on 75 acres in Vermont with a small herd of goats. His book "Goat Song: A Seasonal Life, a short History of Herding, and the Art of Making Cheese" talks about what it's like to live with the animals that feed you. Kessler tells Jim Fleming about his life, his goats, and making chevre.