BERNARDO HUBERMAN is an HP Fellow and Director of the Systems Research Center at Hewlett Packard Laboratories, where he also heads the research effort in Information Dynamics. He received his Ph.D. in Physics from the University of Pennsylvania, and is currently a Consulting Professor in the Department of Applied Physics at Stanford University. He has worked in condensed matter physics, dealing with systems ranging from superionic conductors to two-dimensional superfluids, and has made contributions to the theory of critical phenomena in low dimensional systems. He is one of the discoverers of chaos in a number of physical systems, and also established a number of universal properties in nonlinear dynamical systems. His research into the dynamics of complex structures led to his discovery of ultradiffusion in hierarchical systems.