Gunter M. Ziegler is a MATHEON professor at Freie UniversitBerlin. Dr. Ziegler is a member of the executive board of the Berlin-Brandenburg Academy of Sciences, a member of the German National Academy of Sciences Leopoldina, and a fellow of the American Mathematical Society. His honors include the Leibniz Prize from the German Research Foundation DFG, the Chauvenet Prize from the Mathematical Association of America, and the Communicator Award from DFG and Stifterverband. His research interests connect discrete and computational geometry (especially polytopes), algebraic and topological methods in combinatorics, discrete mathematics, and the theory of linear and integer programming. He earned a Ph.D. from MIT.