Karl Sigmund, professor of mathematics at the University of Vienna, is one of the pioneers of evolutionary dynamics. A graduate of the Lycée Francais de Vienne, he continued his studies at the University of Vienna’s Institute of Mathematics and took his Ph.D. in 1968. He pursued post-doctoral work at University of Manchester, the Institut des Hautes Etudes in Bures sur Yvette near Paris, the Hebrew University of Jerusalem, the University of Vienna, and the Austrian Academy of Sciences. In 1973, he was appointed an associate professor of mathematics at the University of Göttingen and the next year named a full professor at Vienna’s Institute of Mathematics. He headed the institute for several years. Dr. Sigmund’s early work involved statistical mechanics and dynamical systems. He became increasingly interested in biomathematics and game theory. Collaborating with colleagues, he pursued studies in mathematical ecology, chemical kinetics, population genetics, and, especially, evolutionary game dynamics and replicator equations. With Martin Nowak and others, he worked on game dynamical approaches to questions related to the evolution of cooperation in biological and human populations. In 1984, he began a research affiliation he continues today with the Institute for Applied Systems Theory in Laxenburg, Austria. In recent years, he has undertaken research related to the history of mathematics, in particular, the famed Vienna Circle. He co-edited the mathematical works of Hans Hahn and Karl Menger and, in 2006, organized an exhibition on the exodus of Austrian mathematicians fleeing the Nazis, as well as an exhibition on Kurt Gödel. He has given numerous invited lectures, including a plenary lecture at the International Congress of Mathematicians in 1998. A former president of the Austrian Mathematical Society, Dr. Sigmund is a member of the Austrian Academy of Sciences and of the Leopoldina. He formerly served as managing editor of Monatshefte für Mathematik and has published more than 150 papers in leading scientific journals and chapters in volumes of collected works. The co-editor of seven books, he is the co-author of five others and the author of Games of Life: Explorations in Ecology, Evolution, and Behaviour (Oxford University Press, 1984 and 1993).