We would like to thank the many people and organizations that contributed their support to this book. We need to thank MBA Sustainability Fellows Derek McMahan, Laura Monahan, Gina Johnson, Claudia Osorno, and Velika Talyarkhan for their research assistance and refinement of the chapters. Next, we would like to thank Duquesne University and the Alcoa Foundation for funding the fellowship program and portions of the research within this book; the Beard Institute for their continued support of interdisciplinary projects involving sustainability; and Michigan State University. We would not be able to include compelling information about companies already pushing the sustainability performance frontier if it were not for the many local and national companies and organizations that provided insight and examples for this book. Therefore, we need to thank 3M, Applied Products, Alcoa, Baxter, Bayer Material Sciences, Dow, DuPont, EMC, FedEx, Ford, GaBi, Global Reporting Initiative, General Motors, Herman Miller, H.J. Heinz, Honeywell, IBM, Johnson & Johnson, Office Depot, Proctor & Gamble, PITTOHIO, UPMC, Wesco, and Westinghouse. Finally, we would like to thank our families for supporting us and enabling the development of this book. To our children, we hope you will someday live in a sustainable world. To the readers of this book, we hope that you will spearhead the changes that make it possible for our children and all future generations to live in a sustainable world.