Dame Jenni Murray has spent three decades as the host of BBC Radio Four's Woman's Hour programme. Her new book, 'A History Of The World In 21 Women' celebrates women who have had a profound impact on the shaping of our world, but it's not an exhaustive list! What unites her chosen twenty-one is that each has faced seemingly insurmountable obstacles to achieve their ambition, regardless of their colour or class. She has met and interviewed many of the women featured. Jenni's 21 are: Joan of Arc, Artemesia Gentileschi, Angela Merkel, Benazir Bhutto, Hillary Clinton, Coco Chanel, Empress Dowager Cixi, Catherine the Great, Clara Schumann, Hatshepsut, Wangari Maathai, Golda Meir, Frida Kahlo, Toni Morrison, Margaret Atwood, Isabella of Castile, Cathy Freeman, Anna Politokovskaya, Sirimavo Bandaranaike, Madonna and Marie Curie.