Our Changing World

Two Auckland researchers look at why exercise helps depression. Audio

The complex songs of birds: what do they mean and how do they develop? Audio

A major exhibition of NZ fossils kicks off its national tour. Audio

An Upper Hutt stream benefits from volunteers' efforts to bring it back to its natural state. Audio

Nobel Laureate Sir John Walker explains his research on the structures that power our cells.. Audio

What is emissions trading? How does it work? Amelia visits the new exchange to get the low-down on carbon trading. Audio

Dacia checks out some amazing gadgets on display at the Human Interface Technology Laboratory in Christchurch. Audio

Volunteers are trying to identify every aquatic species along Wellington's South Coast. Audio

A NZ researcher says preventative medicine may not have the intended effects for our elderly population. Audio

Veteran explorer Will Steger visits New Zealand to share some of his insights on global climate change. Audio

A big hotel makes some big changes to become more sustainable. Audio

A pine beetle plague threatens forests in western Canada. Audio