Did climate change kill ancient Australia's megabeasts?
BBC World Service Online
Patrick Winterton tells Raymond Mearns about his daring sea kayaking adventures. (R)
BBC Radio Scotland
Adam Walton explores Wales's role in space science and discovers Nasa's Welsh connection.
BBC Radio Wales
Chris Sperring joins botanist Ray Woods in west Wales to search for the Tenby daffodil.
BBC Radio 4
The rural news magazine for those who live and work in the Welsh countryside.
5/5 From a violin to your brain, Ben Silburn traces the journey of an acoustic wave.
BBC Radio 4 Extra
David Attenborough introduces the male cuckoo. (R)
BBC Somerset's weekly look at rural news, countryside issues, wildlife and local events.
Mark Stephen talks to farmer Jim Fairley about the toughest lambing season in memory. (R)
BBC Radio Scotland except MW
Why do we experience disgust?
1/3 Dr Llion Iwan explores two centuries of links between Wales and Mount Everest.
Plans for a 3D printed pistol have been widely reported and downloaded around the world
Answering questions from everyday chemistry to quantum physics.
BBC Radio Cambridgeshire
Special edition recorded at the British Sociological Association's 2013 conference. (R)
Why do we cry and why are emotional tears a uniquely human trait?
Monday 13 May 2013