Our Changing World for Thursday 19 February 2009

9:46 PM.Tim Sippel is attaching satellite tags to striped marlin and Pacific bluefin tuna to find out where they travel to Read more Audio

9:34 PM.Fish ecologist Andy Hicks studies whitebait life cycles and their recruitment in river systems Read more Audio

9:20 PM.Rose Thorogood is investigating the idea that the colour inside a baby bird's mouth tells the parents how healthy the chick is Read more Audio

9:06 PM.Introduced brown tree frogs can survive being frozen solid, and Kalinka Rexer-Huber and Phil Bishop are finding out how. Read more Audio