Jarrod Hurley is a postdoctoral investigator at the American Museum of Natural History. His research involves studying the evolution of star clusters through computer simulations. His models have helped to explain the formation of blue-straggler stars in the open cluster M67, and he has recently begun to investigate the behavior of planetary systems in star clusters. Address for Hurley: Department of Astrophysics, American Museum of Natural History, Central Park West at 79th Street, New York, NY 10024. Internet: jhurley@amnh.org