Professor David Kennaway is a Senior Research Fellow at the Robinson Research Institute, University of Adelaide where he heads the Circadian Physiology Laboratory. He was awarded his PhD at the University of Adelaide in 1977 and worked in Canada before eturning to the University of Adelaide in 1980. His research interests have centred around the impact of daylength and light exposure on physiological systems including reproductive processes, brain function and metabolism. He uses genetic animal models of rhythm disruption as well as environmental manipulation of animals and shift work simulation in human volunteers. Professor Kennaway has authored over 180 original research publications, reviews and patents. He is a member of the Editorial Boards of the Journal of Biological Rhythms, Chronobiology International and Molecular and Cellular Endocrinology and foundation Chair of the Australasian Chronobiology Society. He is Director of the Adelaide Research Assay Facility at the University of Adelaide.