This volume offers a wide range of insights into current media reception and effects research on the topic of ‘sustainability’. The contributions it contains deal with how this topic is communicated and negotiated on (social) media, how various message and context features affect sustainable behaviour, and what role established and ‘new’ actors—such as influencers or one’s own social media contacts—play in sustainability communication. Based on a broad understanding of sustainability, the articles document the current state of research in this field, answer open questions on an empirical basis and provide ideas for future research. With contributions by Jasmin Baake, B.A.; Dr. Marko Bachl; Janine N. Blessing, M.A.; Dr. Sandra Diehl; PD Dr. Marco Dohle; Caroline Eichner, M.Sc.; Anna Freytag, M.A.; Mareike Gensich, B.A.; Tanja Habermeyer, M.Sc.; Rebecca Hellmeier, B.A.; Elisabeth Hopfe, B.A.; Dr. Imke Hoppe; Dr. Anja Kalch; Dr. Ole Kelm; Prof. Dr. Katharina Kleinen-von Königslöw; Dr. Isabell Koinig; Theresa Kraus, B.A.; Anica Lammers, B.A.; Filipa Lessing, B.A.; Univ.-Prof. Dr. Jörg Matthes; Carolina Müller, B.A.; Dr. Brigitte Naderer; Mag. Ariadne Neureiter, M.Sc.; Sophie Przyklenk, B.A.; Anna Schorn, M.A.; Dr. Felix Reer; Dr. Sabine Reich; Prof. Dr. Patrick Rössler; Dr. Desirée Schmuck; Chelsea Walpert, B.A.; Gregor Willenbrock, M.A.; Anne Marie Zang, B.A. and Dr. Masoumeh Zibarzani.