Hugh Pym profiles Adair Turner, the new Chair of the Climate Change Committee.
Robert Peston talks to Adair Turner, Chairman of the Financial Services Authority.
Melvyn Bragg tells the story of the Nobel-winning physicists William and Lawrence Bragg.
David Attenborough hosts a celebration of bird impersonator Percy Edwards.
Ralph Fiennes talks to Simon about his new film The Invisible Woman.
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