Light and time are key environmental components for the majority of organisms.
Biologically, time operates at various scales, ranging from the annual cycle of
seasons, to the daily cycle of the sun, to the potentially rapid cycle of cell
division. What is apparently fundamental to all organisms is the ability to
respond in a manner predictive of time. Time-dependent changes in physiology,
morphology, and ecology are responsive to various environmental cues, the most
significant of which is light. The ability of organisms to perceive, harvest,
and protect themselves from light is also of fundamental importance, leading to
a variety of biological responses including phototaxis and photosynthesis. This
volume,