LISTEN
Samira Ahmed asks what we do when new revelations throw our past convictions into doubt.
Louise Welsh updates the 1930s trail blazed round Scotland by Orkney poet Edwin Muir
5/5 Louise journeys to the tiny Orkney island of Wyre, via the Ness of Brodgar neolithic dig.
Sun 5 Feb 2012 14:45 BBC Radio 4
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