Each issue of the German Environment Agency's magazine "Schwerpunkt" is devoted to relevant topics in the field of environmental protection. It is published every six months. In issue 2-2020, UBA looks back on 30 years of German unification from an environmental perspective. The topics: The state of water, soil, air and climate at the time of reunification | Contaminated sites in Bitterfeld-Wolfen | The environmental movement as the beginning of the peaceful revolution | Interviews with contemporary witnesses | UBA site in Dessau-Roßlau: From gas quarter to green showpiece building.