After training as a Biologist at the University of Chile, Santiago, Francisco V. Seplveda took his Ph.D. at the University of Lausanne in Switzerland (1974-1978), with a Zyma-Nyon (Switzerland) fellowship. Postdoctoral training was at the AFRC Institute of Animal Physiology and Genetics Research, Babraham, Cambridge, UK, from 1978 to 1980. After a stay in the University of Nice, France, as Matre de confrences associ at the Faculty of Sciences, he returned to Babraham, Cambridge, as Senior Scientific Officer in 1979. While there he was promoted to Principal Scientific Officer and, within the Individual Merit Award national scheme, to Senior Principal Scientific Officer in 1990. In 1994 he returned to Chile as Professor of the Faculty of Medicine, at the Universidad de Chile and at the Centro de Estudios Cientficos de Santiago. He has received the Presidential Chair in Science (Chile) 1996-1998, the University of Chile Rector's medal and an International Fellowship of the Howard Hughes Medical Institute (1997-2001). In March 2000, he moved to Valdivia, Chile, to join the new Centro de Estudios Cientficos. His current work is aimed at understanding the cellular and molecular mechanisms of electrolyte and water transport and the regulation of cell volume. He has over 100 papers published in international scientific journals. After earning his B.S., M.S., and PhD. from the Catholic University of Santiago, Chile, Francisco Bezanilla did his doctoral training from 1969-1971 at the Laboratory of Biophysics, NINCDS at the National Institutes of Health in Bethesda, MD as well as with the Department of Physiology at the University of Rochester. Dr. Bezanilla began his career as an Instructor in Physics with the School of Medicine of Catholic University, Santiago and has since taught at the University of Rochester, the University of Chile, the University of Pennsylvania and UCLA, where he is currently aprofessor of Neuroscience. Dr. Bezanilla has been honored multiple times for his work in biophysics. He was the recipient of the Kenneth S. Cole Award in 1990, appointed as Appointed as Susumu Hagiwara Professor of Neuroscience in 1995, and was elected to the Latin American Academy of Sciences in 2002. He is a member of Centro de Estudios Cientificos,Valdivia, Chile, the Brain Research Institute and is a fellow of the Biophysical Society. His current work includes the biophysics of excitation, specifically the structure function in voltage dependent Ionic Channels. Dr. Bezanilla has over 100 papers published in international scientific journals.