This book is a major new introduction to the field of ecological ethics. Taking issue with the common assumption that existing human ethics can be 'extended' to meet the demands of the ongoing ecological crisis, Patrick Curry shows that a new and truly ecological ethic is both possible and urgently needed. With this distinctive proposition in mind, Curry introduces and discusses all the major concepts needed to understand the full range of ecological ethics. Focussing first on the major concepts of ethics - religious and secular - and value, Curry then examines the gradations of ecological ethics. He discusses light green, shallow or anthropomorphic ethics with the examples of stewardship, lifeboat ethics, and social ecology; mid-green or intermediate ethics represented by animal liberation/rights and biocentrism; and dark green, deep, or ecocentric ethics. Particular attention is given to the various kinds of ecocentric ethics, such as the Land Ethic, The Gaia Hypothesis, and Deep Ecology and its offshoots: Deep Green Theory, Left Biocentrism and the Earth Manifesto. Ecofeminism is also considered in this context. The concluding chapters discuss green ethics as post-secular, moral pluralism and pragmatism, green citizenship, and human population in the light of ecological ethics. This comprehensive and wide-ranging textbook offers a radical but critical introduction to the subject. It will be of great interest to students, activists, and to a wider public concerned with the ecocrisis, its main theories, debates, and possible solutions.