Our Changing World for Thursday 21 December 2006

9:45 PM.The International Study of Asthma and Allergies in Childhood. Audio

9:33 PM.Dean Williams joins a NIWA team tagging snapper in the Hauraki Gulf. Audio

9:20 PM.Dean Williams explores how gold deposits form in hydrothermal areas. Audio

9:06 PM.Glaciologist Nancy Bertler prepares to study icecores from Mt Erebus. Audio