<p>This book examines sustainable manufacturing, from the extraction of materials to processing, use and disposal, and argues that significant changes in all of the above are needed for the world to progress toward a more circular economy.</p><p> </p><p>Materials and processing methods are usually chosen with performance as the key metric. Why has our society embraced plastics? Because they work. In most cases, they are lighter, easier to manufacture, and less expensive than the metal, wood, glass, or stone they have replaced. Why do industrial manufacturers use toxic chemicals? Because they are effective, but the unintended consequences may be severe. By learning how various materials are made and what happens when they are recycled, readers will better understand the value of materials and the challenges that manufacturers face when trying to make their facilities and products less toxic and less wasteful. The three chapters in Part I provide essential background about materials i