Our Changing World for Thursday 25 December 2014

9:46 PM.The 'Singing Scientist' Matthew Barnett enjoys the challenge of turning complicated scientific concepts into catchy songs Read more Audio

9:33 PM.The National Whale Centre opens in Picton to focus on the natural and cultural history of cetaceans and to mark 50 years since the end of commercial whaling in New Zealand. Read more Audio

9:20 PM.Christchurch photographer David Hallett has a passion for taking photos of New Zealand birds, and says he takes some of his best images in his back garden and local neighbourhood Read more Audio

9:06 PM.Les McPherson began recording bird calls in 1969, and set out to create a sound archive of every New Zealand bird Read more Audio