Our Changing World for Thursday 4 December 2014

9:46 PM.In this interview from 2004, Oxford University mathematician Marcus du Sautoy, who will be in New Zealand next week, discusses prime numbers. Read more Audio

9:45 PM.To mark World Soil Day, soil scientists head on a fieldtrip to explore New Zealand's volcanic soils. Read more Audio

9:34 PM.A new study suggests a way of predicting how invasive plant species might be when moved to a new country Read more Audio

9:20 PM.Michelle Dickinson is Nanogirl, a superhero teaching kids that science is fun, and she has won the 2014 Prime Minister's Science Media Communication Prize Read more Audio

9:06 PM.The 5th underwater clean-up on Wellington's waterfront unearthed everything from office chairs to road cones and laptop computers Read more Audio

12:00 PM.Prime Minister’s Science Prizes 2014 Read more Audio

12:00 PM.2014 Spineless Wonders of the Year competition - winners Read more