YANEER BAR-YAM is President of the New England Complex Systems Institute, Chairman of the International Conference on Complex Systems, Managing Editor of InterJournal, and author of Dynamics of Complex Systems (1997), the only textbook to address the entire field of complex systems. Bar-Yam uses complex systems concepts to understand how organizations and patterns of behavior arise, evolve, adapt, and how we can use multiscale representations to relate fine and large scale, short and long term perspectives. He has studied the role of complexity in corporate organization and effectiveness, in health care and health care management, in the education system, in military conflict, and in third world development. Applications are to the relationship of structure and function and meeting complex challenges at all scales.