This chapter introduces the volume on environmental behaviour and attitudes in Europe. It begins by situating the work within the broader framing of crises, highlighting the rise of the concept of polycrisis as a guiding perspective. The chapter traces the history of the International Social Survey Programme (ISSP) and its Environment modules, outlining their coverage of attitudes, behaviours, efficacy, trust, and, more recently, topics such as energy policy, environmental scepticism, and information sources. It also presents findings from a systematic review of publications using ISSP Environment data across the four survey modules since 1993, restricted to outputs indexed in Web of Science and SCOPUS. The review reveals a steady increase in scholarly use, with a marked rise after 2020, underscoring both the academic impact and growing visibility of the ISSP datasets. Publications have been widely cited, contributing significantly to debates on environmental attitudes, behaviour, and policy support, while remaining anchored in psychosocial perspectives with climate change at the centre. The chapter concludes with an overview of the contributions that follow in the volume.