This book introduces several concepts and initiatives which show the applied nature of environmental engineering in various countries and contexts. Prepared as part of the Programme for Environmental Engineering in Europe (PREENE) the book goes beyond the approach of classical themes and instead focuses on issues such as lifecycle analysis, waste management, environmental law, regulations, eco-efficiency and environmental ethics, also providing an overview of future trends and scenarios. It supplies an important source of reference for university students, engineers, practitioners and all those interested in the practicalities of environmental conservation.