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Edited by: Katrin Vohland, Daniel Dörler, Florian Heigl, Maria Aristeidou, Egle Butkevičiene, Claudia Göbel, Mordechai Haklay, Olivia Höhener, Barbara Kieslinger, Andrzej Klimczuk, Gitte Kragh, Moritz Müller, Frank Ostermann, Jaume Piera, Baiba Pruse, Gaston Remmers, Sven Schade, Susanne Tönsmann, Jakub Trojan, Kathryn Willis