Our Changing World for Thursday 22 May 2014

9:04 PM.A study using ancient DNA shatters the idea that the kiwi is most closely related to the emu. Instead, its closest cousin is the elephant bird. Read more Audio

9:06 PM.Auckland Zoo's captive breeding programme for wetapunga is so successful that offspring are now retunring to the wild. Read more Audio

9:20 PM.New Zealand climate scientists discuss the consequences of the irreversible melting of glaciers in West Antarctica. Read more Audio

9:34 PM.The Kopuatai peat bog on the Hauraki Plains is a natural laboratory to study how the planet breathes and uses carbon. Read more Audio