Our Changing World for Thursday 23 June 2016

9:46 PM.More than a million birds have been counted in the last nine years of the garden bird survey, and sparrows and silvereyes consistently top the rankings. Read more Audio

9:34 PM.Veronika Meduna meets Kiwi scientist Tom Caradoc-Davies to find out how he uses the Australian synchrotron to work out the 3D structure of proteins to make cancer drugs more specific. Read more Audio

9:20 PM.Seed-eating weevils are one of the latest biocontrol agents introduced into New Zealand to control the invasive weed, Darwin's barberry. Read more Audio

9:06 PM.Veronika Meduna visits Cochlear, a medical device company that produces bionic ears, to find out how cochlear implants could help some of the 700,000 New Zealanders who live with a hearing disability.