This book features influential scholarly research and technical contributions, professional trajectories, disciplinary shifts, personal insights, and a combination of these from a group of remarkable women within mechanical engineering. Combined, these chapters tell an important story about the dynamic field of mechanical engineering in the areas of energy and the environment, as seen from the perspective of some of its most extraordinary women scientists and engineers. The volume shares with the Women in Engineering and Science Series the primary aim of documenting and raising awareness of the valuable, multi-faceted contributions of women engineers and scientists, past and present, to these areas. Women in mechanical engineering and energy and the environment are historically relevant and continue to lead these fields as passionate risk takers, entrepreneurs, innovators, educators, and researchers. Chapter authors are members of the National Academies, winners of major awards and recognition that include Presidential Medals, as well as SWE, SAE, ASME, ASEE and IEEE Award winners and Fellows.