What is time? This is a question contemplated for millennia. We live in a single moment yet always feel time 'passing'. Can physical science account for time and its perceptions? Or do we need cognitive science and neurophysiology to help explain time's characteristics? These issues will be explored.

Dr Peter J Riggs is a physicist and a philosopher of science at The Australian National University. He is a leading researcher on the nature of time and the foundations of physics. Dr Riggs has published many academic articles on the topic of time as well as the books: Whys and Ways of Science (Melbourne University Press, 1992) and Quantum Causality (Springer Academic, 2009).