Günter Wagner is the Alison Richard Professor of Ecology and Evolutionary Biology at Yale University. He is a chemical engineer by training and studied zoology and mathematics at the University of Vienna where he earned a Ph. D. in zoology. From 1985 till 1991 he was at the Department of Zoology at the University of Vienna, Austria and in 1991 joined Yale’s Department of Biology. In 1997 he became the first chair of Yale’s Department of Ecology and Evolutionary Biology. Since 2010 he is a member of the Yale Systems Biology Institute. His research interests include the evolution of gene regulation, the evolution of pregnancy, and the evolutionary biology of cancer and female sexuality. GPW is a Mac Arthur Fellow, member of the US National Academy of Sciences, the American Academy of Arts and Sciences, the Connecticut Academy of Science and Engineering and a corresponding foreign member of the Austrian Academy of Sciences.