The nature of time has haunted humanity through the ages. Some conception of time has always entered into humanity's ideas about mortality and immortality, and permanence and change, so that concepts of time are of fundamental importance in the study of religion, philosophy, literature, history, and mythology. How humanity experiences time physiologically, psychologically and socially enters into the research of the behavioral sciences, and time as a factor of structure and change is an essential consideration in the biological and physical sciences. On one aspect or another, the study of time cuts across all disciplines. The International Society for the Study of Time has as its goal the interdisciplinary and comparative study of time. The series published two volumes over the last 5 years.