Our Changing World for Thursday 29 May 2014

9:34 PM.Peter Devane performs revision surgery on Fiona James to replace her existing hip implants with a newer, more robust material Read more Audio

9:20 PM.Research into extremely toxic cyanobacteria levels in a New Zealand lake could help clean up water supplies around the world Read more Audio

9:06 PM.The Wakatipu Wilding Conifer Group is tackling the growing problem of wilding pine trees in the Queenstown basin Read more Audio