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Andrew Marr talks to Lionel Shriver, Jonathan Balcombe, Victoria Clark and Heather Brooke.
BBC Radio 4
Andrew Marr is joined by John Simpson, Emilie Bickerton, John R Bowen and Rob Lemkin.
BBC Radio 4 FM
Andrew Marr with Ian McEwan, Paul Davies, Patricia Fara and James Crabtree.
Andrew Marr with John Adams, Philip Ball, Julien Temple and Sangeeta Datta.
Andrew Marr with Jonathan Safran Foer, Anthony Julius and Alexander McCall Smith.