Farmers at the Bath and West Show await the badger cull.
BBC Radio 4
David Attenborough presents the sounds and story of the sedge warbler.
2/6 Clare Balding meets those who have found love and companionship through walking.
Observational evidence of universes beyond our own? Laura Mersini-Houghton and Lee Smolin.
HIV Structure, forgotten plant genetics and the cultural influence on our genes.
BBC World Service
Friday 31 May 2013