PD Dr. Christian Lotz studied history and social sciences in Leipzig, Edinburgh, Vienna and Poznań/Poznan and was awarded his doctorate in 2007 with the thesis "Die Deutung des Verlusts. Memory-Political Controversies in Divided Germany around Flight, Expulsion, and the Eastern Territories 1948-1972" at the University of Stuttgart. Since 2014, he has been head of the map collection of the Herder Institute for Historical Research on Eastern Central Europe.  In 2015, he habilitated at Justus Liebig University Giessen with the thesis "Rescaling Sustainability. International Forestry Congresses and the Controversy over Resource Supply for the Future in the North and Baltic Sea Region (1870-1914)."