Kill a Stoat and Save New Zealand?
Updated at 4:00 pm on 5 August 2012
Originally aired on Talking Heads, Sunday 5 August 2012
Kim Hill and a panel of experts consider Sir Paul Callaghan's final challenge - to make New Zealand pest free. How realistic is this vision? Will New Zealanders rise to the challenge? What will it cost? And would it be worth the expense?