Peter C. Lippman, M. Phil, M. Psych., BArch, Associate AIA, has been researching, writing, and designing activity-based learning environments that engage teachers and learners. His work is grounded in his academic research and action research projects, where social science methodologies are used to guide the programming, planning, and design of learning environments. Fueled by his desire to understand how and why teachers and learners operationalize the different settings in the learning environment, he creates places that are responsive to their needs. He is an acknowledged Thought Leader in the field of educational architecture and a prolific writer. Peter not only presents his research at conferences internationally, but most importantly, works with educators throughout the world to re-imagine their environment to positively impact learning, learners and the things to be learned. Elizabeth A. Matthews is Assistant Professor of Psychology and Education in the Division of Interdisciplinary Arts & Sciences at City College, CUNY. Her research interests center on the physical environment of children and youth, school security and violence, and the impacts of physical space on mental health in young people. She has conducted both quantitative and qualitative research on the physical elements of school security and hosted conferences that have brought an international group of researchers, policy-makers, and educators to dialogue on the key issues impacting school design.