1/3 Richard Fortey focuses on a series of cataclysms over a million-year period. (R)
2/3 Iolo witnesses extraordinary displays from hen harriers and black grouse. (R)
BBC Two Wales
The team visits some amateur astronomers in their back-garden observatories.
1/4 The team transform the garden of a nursing home on the edge of Sheffield.
10/14 Drama documentary reliving the story of Elsa, the orphaned lioness of the film Born Free. (R)
1/3 Laverne Antrobus discovers the different way that the brain works in children with autism. (R)
2/3 In the heart of the Amazon, Dr George McGavin and the team discover some new species. (R)
The team visits some amateur astronomers in their back-garden observatories. (R)
Thursday 16 August 2012