In a Hardtalk Extra programme broadcast on Friday 13th July, Gavin Esler talks to the American author Barbara Kingsolver.
Barbara Kingsolver's latest book is Animal, Vegetable, Miracle
Barbara Kingsolver is a best-selling American novelist, whose books like The Bean Trees and The Poisonwood Bible have delighted readers around the world.
But she describes herself as a "political artist", and has published non-fiction work as well as novels.
She talks to Gavin Esler about her latest project, a personal investigation into America's food industry.
HARDtalk Extra can be seen on BBC World at 0330 GMT, 0830 GMT, 1430 GMT, and 1830 GMT.
It can also be seen on BBC News 24 at 04:30 and 23:30.