Our Changing World for Thursday 5 October 2017

9:07 PM.After twenty years of puzzling, geologist Bruce Hayward reckons he has identified some mysterious patterns in a west Auckland roadside cutting as moa footprints. Read more Audio

9:06 PM.Arlene McDowell is designing nanoparticles that will hold medication and deliver it exactly to its intended destination in the body. Read more Audio