Our Changing World for Thursday 28 April 2011

9:34 PM.Richard Lauder explains how the Martin Jetpack works as the latest prototype is taken outside and briefly lifts-off Read more Audio

9:20 PM.Very little is known about Antarctica's fish leeches, including whether they use antifreeze to survive subzero temperatures Read more Audio

9:06 PM.Fifteen years after heather beetles were introduced, they finally seem to be having an impact, Read more Audio