This book is designed to facilitate the introduction of international and comparative legal issues into the basic environmental law course, but could also be used in a seminar on the subject. It covers constitutional protection of the environment; the precautionary principle; intergenerational equity; international and comparative approaches to the regulation of air, water, and toxic substance pollution; global climate change; wildlife and biodiversity preservation; the law of the sea; and management of oceans and coastal areas. Once introduced to the challenges of effectively addressing environmental problems, students can easily appreciate the value of concerted international efforts to address those challenges.