The primary objective of this book is to present the economic and ecological principles essential for a clear understanding of complex contemporary environmental issues and policy considerations. This book is written for an introductory-level course in environmental economics. It is primarily designed for college sophomores and juniors who want to study environmental concerns with an interdisciplinary focus. The academic majors of these students could be in any field of study, but the book would be especially appropriate for students with majors in economics, political science, environmental studies, or biological sciences