Eugene V. Koonin is a Senior Investigator at the National Center for Biotechnology Information (National Library of Medicine, National Institutes of Health), as well as the Editor-in-Chief of the journal Biology Direct. Dr. Koonin’s group performs research in many areas of evolutionary genomics, with a special emphasis on whole-genome approaches to the study of major transitions in life’s evolution, such as the origin of eukaryotes, the evolution of eukaryotic gene structure, the origin and evolution of different classes of viruses, and evolutionary systems biology. Dr. Koonin is the author of more than 600 scientific articles and a previous book Sequence--Evolution--Function: Computational Approaches in Comparative Genomics (with Michael Galperin [2002] New York: Springer).