The quest for sustainability has generated lifestyle changes for individuals across the globe, transformations within the arts, sciences, business, design, engineering, and agriculture, innovative policies and laws, and historic international agreements. Yet the means to achieving sustainability remain unsettled and disputed, even as its crucial importance in the face of the climate crisis grows. The third edition of this popular and lively text explores the concept and practice of sustainability across a broad range of issues and topics. Fully revised and updated, the book underlines the importance of creativity in the service of conservation within ecological, economic, technological, political, legal, and cultural arenas. Chapters conclude with new Discuss, Explore, and Take Action sections that pose probing questions for review and discussion. A new final chapter presents four practical principles that readers may employ to guide the investigation of sustainability problems and their crafting of viable solutions.               Sustainability presents a hopeful account of the opportunities before us while squarely confronting the daunting challenges that lie ahead. It provides a crucial resource for students grappling with many of the most urgent issues of our time.