What drives our food preferences? In Episode 2 Professors Steve Simpson and David Raubenheimer explain their breakthrough discovery about what animals eat and why. They take us through some of their research with insects, spiders, cats, dogs, primates and humans, all leading to the 'protein leverage hypothesis' - the profound change in thinking about what drives our human appetites. Along the way we hear about the challenges of holding your nerve in overturning long-held scientific beliefs.  Hosted by novelist Charlotte Wood, the first writer-in-residence at the Charles Perkins Centre, University of Sydney. More details: EAT LIKE THE ANIMALS THE CHARLES PERKINS CENTRE, UNIVERSITY OF SYDNEY CHARLOTTE WOOD