This volume explores the institutional, constitutional, and historical premises for the adoption and application of substantive EU environmental law and further expounds upon the dynamics between EU Member States and the EU. The book additionally provides an introduction to the specific subject areas of EU environmental law through thematic chapters that analyse important topics such as climate and energy, water, and biological diversity. Each area is explained in detail, including a discussion of the specific features that characterize each area and an overview of the main legal acts and case law relevant to the particular area.