Stephen Ornes is a freelance science writer who recently moved from New Haven, Connecticut, to Nashville, Tennessee. A frequent contributor to Discover, New Scientist, CR magazine, Science News for Kids and other outlets, he has written about the math of pizza slicing, tumor banking, and extrasolar planets, in addition to a wide range of stories from astronomy, physics, cancer research and mathematics. The story about tumor banking was recently honored by the Association of Health Care Journalists. Stephen received a master's degree in applied mathematics at the University of Missouri and is a graduate of MIT's Graduate Program in Science Writing. His young adult biography of Sophie Germain was published in August 2008. Read an excerpt here. He has been a children's entertainer in Dallas, a tech guy in Barcelona, a snowboarding instructor in Vail, an actuarial trainee in Stamford and a math teacher in New Haven. His wife, Kate, is a nurse-midwife. His son Sam is planning a space colony, and his daughter Alice rocks on the drums.