Robert Winston is Director of Reproductive Medicine at Hammersmith Hospital and Professor of Fertility Studies, Imperial College, London. His research into embryology and genetics is recognised internationally. He is currently Chairman of the House of Lords Select Committee on Science and Technology. He has presented various BBC television series, including The Human Body which won numerous awards, including three BAFTAs. His publications written for lay readership, for which he was recently awarded the Royal Society’s Michael Faraday Gold Medal, include: The IVF Revolution (Vermillion, 1999) Predictions Genetic Manipulation (Weidenfeld and Nicholson, 1997) Making Babies (BBC, 1996) Getting Pregnant (Pan Macmillan, 1993) Infertility A sympathetic approach (Martin Dunitz, 1986, Vermillion, 1996) Lori Oliwenstein is Science Write at the Unviersity of Southern California’s Health Sciences Campus and was formerly a Senior Editor at Discover magazine.