I am a Distinguished Professor at the University of Wollongong and Director of the Australian Research Council (ARC) Centre of Excellence for Australian Biodiversity and Heritage (CABAH). I was trained in the Earth sciences and I am interested in past interactions between hunter-gatherers and their environments in Africa, Asia and Australia. Much of my career has been spent investigating turning points in human evolution and dispersal, including the timing, causes and ecological consequences of archaic and modern human migrations. Given my multidisciplinary research interests, I publish across the fields of geochronology, archaeological science, human evolution and terrestrial ecosystems.