David Ewing Duncan is an award-winning, best-selling author of seven books published in 19 languages; he is a journalist and a television, radio and film producer and correspondent. His most recent book is the bestseller Experimental Man: What one manÍs body reveals about his future, your health, and our toxic world. He is the Chief Correspondent of public radioÍs Biotech Nation; and a columnist for Fortune. He is the Director of the Center of Life Science Policy at UC Berkeley. He has been a commentator on NPRÍs Morning Edition, and a contributing editor for Wired, Discover and Conde Nast Portfolio. David writes for The New York Times, National Geographic, HarperÍs, Atlantic Monthly, the San Francisco Chronicle, and many other publications. He is a former special correspondent and producer for ABC Nightline and a correspondent for NOVAÍs ScienceNOW! He has won numerous awards including the Magazine Story of the Year from the American Association for the Advancement of Science. His articles have twice been cited in nominations for National Magazine Awards, and his work has appeared twice in The Best American Science and Nature Writing. He is a graduate of Vassar College and now lives in San Francisco.