As humanity navigates the complexities of human-environment interactions, interdisciplinary approaches that integrate psychological insights within the broader environmental discourse are essential for fostering meaningful engagement with sustainability and addressing global environmental concerns. In this publication the authors, who were participants of the “4th Summer School on Environmental Psychology” on Vilm Island in May/June 2023, explore distinct yet interconnected research topics, ranging from climate justice and emotional responses to sustainability strategies, incentives for pro-environmental behavior and the social implications of emerging technologies.