Haig H. Kazazian spent 25 years on the Johns Hopkins faculty before joining the University of Pennsylvania School of Medicine as Chair of the Department of Genetics in 1994. In July 2010, he returned to Johns Hopkins as Professor in the Institute of Genetic Medicine. Still heavily involved in molecular genetic research, he has concentrated for 20 years on mammalian and human transposable elements (“jumping genes”). A member of the Institute of Medicine of the National Academy of Sciences and the American Academy of Arts and Sciences, he was awarded the 2008 William Allan Award, the top honor of the American Society of Human Genetics. Moyra Smith is Professor of Pediatrics and Human Genetics at the School of Medicine at University of California, Irvine. A leading scholar in her field, she has served as an editor of McKusick’s classic “Red Book,” Mendelian Inheritance in Man, and has written several monographs in the Oxford Series on Human Genetics. Nicholas Wright Gillham is James B. Duke Professor of Biology emeritus at Duke University. A leading expert on the genetics of cellular organelles, he has a longstanding interest in the history of science. He taught Duke’s innovative course “The Social Implications of Genetics.” Greg Gibson is Professor of Genetics at North Carolina State University in Raleigh, and of Integrative Biology at the University of Queensland, Australia. A leader in the new field of genomics, he serves on the editorial boards of PLoS Genetics, Current Biology, and Genetics. With Spencer V. Muse, he co-authored A Primer of Genome Science, one of the field’s leading textbooks.