Our Changing World for Thursday 21 September 2006

9:46 PM.We understand little of the biology of breast cancer, although genetic changes are likely to be important. Audio

9:35 PM.Dean Williams discusses one of NZ's most unusual threatened plants, Dactylanthus taylorii, with Avi Holzapfel from DOC. Audio

9:20 PM.Veronika Meduna explores ways of protecting surfaces from microbial fouling with a team of University of Otago scientists. Audio

9:06 PM.Beatrice Hill Tinsley was a brilliant astronomer, recognised worldwide as a leading thinker in cosmology. Audio