Tim Faulkner dreams of a day when national parks across mainland Australia are free of feral predators, and where now-extinct mammals like the eastern quoll or Tassie devil roam freely. 

That dream may soon come one step closer to reality when a small number of eastern quolls are released in New South Wales, more than half a century after they became extinct on the mainland.  

Guest: Tim Faulkner is managing director of not-for-profit Aussie Ark.