They led while others followed. They stood up and spoke out when no one else would. They broke the mould in art, journalism and politics. Each fought, in her own way, for change. 'A History of the World in 21 Women' celebrates the lives, struggles and achievements of women who have had a profound impact on the shaping of our world. Jenni's 21 are: Joan of Arc, Artemisia 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 Politkovskaya, Sirimavo Bandaranaike, Madonna, and Marie Curie.