Our Changing World for Thursday 22 February 2007

Science

Dacia Herbulock meets amateur astronomer Albert Jones, who's preparing to celebrate the 20th anniversary of his co-discovery of Supernova 1987A.

Dean Williams continues to look at non-lethal scientific whale research in an interview with University of Queensland marine mammal biologist Michael Node.

Environment

Dean Williams heads out into the Hauraki Gulf to bury a whale and discuss the threats of ship strike.

Health

Louise Wallace talks to Richard Faull, Maurice Curtis and PhD student Monica Kam, at the University of Auckland's Faculty of Medicine and Health Sciences, about their work on stem cells and how they migrate through the brain.