Sustainability Ethics: 5 Questions is a collection of short interviews based on 5 questions presented to some of the most influential and prominent scholars in the field. We hear their views on sustainability ethics, the aim, the scope, the future direction of research and how their work fits in these respects. Interviews with Brad Allenby, Richard Bawden, Donald A. Brown, Baird Callicott, Randall Curren, Aidan Davison, Michael E.Gorman, Benjamin Hale, Dale Jamieson, Judith A. Layzer, Steven A. Moore, John Nolt, Bryan Norton, David W. Orr, Donald Scherer, Chris Schlottmann, William Shutkin, Behnam Taebi, Paul B. Thompson, Michael E. Zimmerman.