In the early 1980s in West Germany, a radical new political party was on the rise. Die Grünen - the Greens - championed protecting the environment, scrapping nuclear power plants and nuclear missiles, and stopping pollution. A movement as well as a party, the Greens brought together disparate groups of environmentalists, conservative farmers and youthful anti-nuclear activists. Petra Kelly, the party’s most prominent spokesperson, was a charismatic speaker who became an international name. Her life was cut short when she was killed by her partner in 1992. Sara Parkin, friend and biographer of Petra Kelly, shares her memories of the Greens’ early successes and reflects on Kelly’s legacy today.