Our Changing World for Thursday 7 April 2016

9:46 PM.After more than 30 years of studying the world's smallest dolphins Liz Slooten and Steve Dawson still enjoy getting out on the water to observe Hector's dolphins, writes Alison Ballance. Read more Video, Audio, Gallery

9:35 PM.NIWA oceanographers are using Deep Cove in Doubtful Sound, where the tailrace from the Manapouri power station flows into the sea, as a natural laboratory to study complex fluid dynamics. Read more Audio, Gallery

9:20 PM.Smart fabrics and e-textiles are a blend of fashion and technology, and can include knitted fabric that has electronic sensors woven into it. Read more Audio

9:06 PM.Brain imaging scientist Tracy Melzer is using MRI scans to look for changes in the brain that could predict if a person with Parkinson's Disease will develop dementia. Read more Audio