Environmental research is a broad and complex field of research. For this reason, HCE scientists have made it their task to define central terms and concepts across disciplines and to summarize the current state of research in each case. Thus, in the joint project “Umwelt interdisziplinär. Grundlagen - Konzepte - Handlungsfelder” (Environment in different disciplines: Basics - Concepts - Fields of Action), which are made available free of charge as open access files via the Heidelberg document server "HeiDOK". In addition to general introductions to complex topics such as climate change or growth and prosperity, the anthology offers insights into specific disciplines, such as environmental physics. The contributions are continuously supplemented and are available via the Heidelberg Document Server.