The role of law in responding to global environmental problems and the interplay between different levels of regulation and governance is becoming increasingly relevant in the field of liability and reparation for environmental damage. This book examines the relationship and reciprocal influences between the EU and the international legal order in a multilevel and comparative perspective, in relation to the ongoing efforts to elaborate effective regimes of liability and reparation for environmental damage. It addresses questions concerning the impact of interaction on the development, implementation and enforcement of appropriate responses to environmental damage within the respective legal orders and on a global level.