In this lesson, student teams are challenged to examine the collapse of the World Trade Center Twin Towers. Each team will develop a proposal for a new or improved building material or method that could be incorporated into the design of future high-rise buildings. Students synthesize the information they gathered about the construction of high-rises, engineering designs, and failures of those designs to provide evidence for their proposals. This process should be guided by the engineering design process (EDP). We recommend reading Chapter 3, which is included in this book selection and provides a module overview and summary. A materials list, safety notes, standards, assessment, teacher background information, Internet resources, and references are provided. This book selection also includes the Table of Contents, About the Editors and Authors, Acknowledgments, Appendix, and Index.