Lionel Kelleway visits the Arne RSPB reserve in Dorset to see the rare Dartford war...
Sue Nelson joins scientists down a mine on their search for the elusive dark matter...
Helen Mark and Time Team's Mick Aston investigate the story of the Hanbury Crater.
Kirsty Young's castaway is Sir Stuart Rose, executive chairman of Marks and Spencer...
Jonathan Dimbleby chairs the topical debate from Rickmansworth in Hertfordshire.
Cathy O'Dowd on the choice she had to make when she saw a dying climber on Everest.
Delving into the seamier side of politics to consider the line where fact meets fic...
Clive James reflects on the revelation of the identity of Belle de Jour.
Russell Davies chairs the seventh heat of the perennial general knowledge contest.
Andrew Marr with Tariq Ramadan, Sir Mark Walport, Kate Bush and Jonathan Phillips.
Peter Curran is joined by Alison Steadman, Meera Syal and Raymond Blanc.