Our Changing World for Thursday 30 April 2009

9:46 PM.University of Otago geneticist Stephen Robertson discovers a link between a rare genetic bone condition and a childhood cancer. Read more Audio

9:34 PM.Te Papa botanists Patrick Brownsey and Leon Perrie explore New Zealand's native ferns. Read more Audio

9:20 PM.DOC's Peter McLelland talks about past and planned eradications of introduced mammals from subantarctic islands. Read more Audio

9:06 PM.University of Warwick chemist Julie McPherson explains how carbon nanotubes can be used as tiny wires. Read more Audio