Renowned Minnesotan science writer William Souder is out with a new book on a man who made important contributions, not only to the world of ornithology, but also the world of art: John James Audubon. In "Under a Wild Sky," Souder paints the picture of a deeply complex and conflicted Audubon, who failed at a number of endeavors before stumbling upon the career that made him famous.Guests: William Souder's previous book was called "A Plague of Frogs."