Our Changing World for Thursday 19 March 2015

9:55 PM.This programme marks the 50th anniversary of Scott Base, New Zealand's science station in Antarctica, which was established in 1957. Read more Audio

9:46 PM.The kaka from Zealandia Sanctuary are an urban success story, but they are developing lead poisoning, probably from chewing roofing nails and old lead paint. Read more Audio

9:34 PM.Massey University zoologist Anne Wignall explains how web-building spiders use vibrations to communicate and to make sense of their world. Read more Audio

9:20 PM.A new study shows that yellow-eyed penguins colonised New Zealand within just a few decades of the Waitaha penguin becoming extinct Read more Audio

9:06 PM.A gravimeter is an instrument that measures local gravity and Mikkel Andersen is developing one that uses atoms instead of springs or light Read more Audio