Alexander Gorodnik is a Reader in the School of Mathematics at the University of Bristol. His research interests are in the theory of dynamical systems and its connections with other branches of mathematics such as number theory, geometry and representation theory. In collaboration with A. Nevo, he has written a research monograph,“The Ergodic Theory of Lattice Subgroups” in Annals of Mathematics Studies 172, Princeton University Press, 2010, which systematically investigates statistical properties of orbits of large groups.