Our Changing World for Thursday 11 September 2014

9:50 PM.The 11th mystery sound from the 2014-15 Our Changing World opening theme Read more Audio

9:34 PM.The eruption detection system on Mount Ruapehu is designed to quickly warn people on the Whakapapa ski field to move to high ground out of the path of dangerous lahars Read more Audio

9:20 PM.Martin Siegert, a gloaciologist at Imperial College London, discusses the exploration of Antarctica's hidden lakes and rivers below the ice cap. Read more Audio

9:06 PM.PhD student Lily Chang is trying to determine if an eye test could be developed for early diagnosis of Alzheimer's disease Read more Audio