Each Frontiers symposium covers four topics that vary from year to year. Examples from past symposia include: visualization for design and display, nanotechnology, advanced materials, robotics, simulation in manufacturing, energy and the environment, optics, intelligent transportation systems, MEMS, design research, bioengineering, counterterrorism technologies, quantum computing, and bio-inspired engineering. Following each talk, there is substantial time devoted to discussion. In addition, breakout sessions, poster sessions, and other events offer ample opportunity for informal exchange among the participants. An alumni program supports continuing contact among the participants. Attendees find the programs useful and unique in their ability to bring together a diverse group for the purpose of exchanging information about engineering developments and challenges across disciplines.