PAUL RAEBURN was formerly a senior writer and editor at Business Week, where he covered science and medicine for seven years. He is the recipient of many distinguished writing awards and is also the author of Mars: Uncovering the Secrets of the Red Planet and The Last Harvest: The Genetic Gamble That Threatens to Destroy American Agriculture. A native of Detroit, Raeburn lives in New York City with his wife, the writer Elizabeth Devita.