Barbara Unmüssig Barbara Unmüssig is the President of the Heinrich Böll Foundation. Contributions: 17 September 2021Food Systems on the Edge 1 April 2021Divided We Fail - Vaccine Diplomacy and its Implications 5 November 2017 The Geoengineering Fallacy 15 August 2016Editorial: Behind the Rio Games 29 April 2015Save Our Soil