Petra Kelly was a visionary pacifist and a leading figure in the international environmental movement. She fought for radical social change, disarmament, and a society in harmony with nature. For her, issues relating to the environment, peace, and human rights were one and the same. In 1980, she co-founded the German Green Party. At the age of 44, she was murdered by her partner and fellow activist. Influenced by the American civil rights movement, she campaigned to ban uranium mining and supported peace movements in East and West Germany. Friends and colleagues recount Kelly's personal and political life for the first time.