This is the inaugural volume in a series of reviews on the theory,policy, and implementation of sustainability and sustainabledevelopment, with a focus on the economic, social, andenvironmental challenges facing the world today. This volumeincludes papers by leading international experts in the science ofsustainability, including Rudolf de Groot, Richard Cowling, BruceHannon, R. Kerry Turner, Peter Nijkamp, Peter Soderbaum, BarryD. Solomon, and Pushpam Kumar. NOTE: Annals volumes are available for sale as individual booksor as a journal. For information on institutional journalsubscriptions, please visit www.blackwellpublishing.com/nyas. ACADEMY MEMBERS: Please contact the New York Academy of Sciencesdirectly to place your order ( www.nyas.org ). Members of theNew York Academy of Science receive full-text access to the Annalsonline and discounts on print volumes. Please visit http://www.nyas.org/MemberCenter/Join.aspxfor more information about becoming a member.