Nature? Nurture? What makes us human?

That old chestnut - what defines human nature? Genes or experience? Are we free agents or genetically determined souls? These questions have fuelled a fierce fight - polarizing a battleground of social scientists, biologists, parents and politicians. World renowned science writer Matt Ridley is calling a truce, and arguing the case for Nature via Nurture. Genes aren't Gods, he argues, they're cogs. As agents of nurture, genes get switched on and off by our experiences. Join Natasha Mitchell with Matt and special guests to debate the implications. Part of the 2007 Alfred Deakin Innovation Lecture series.