The regular alternation of light and dark affects not only human biological systems, but also the social organization of behavior. The effect of such light mode

Circadian rhythms have been shown to be ubiquitous and critically important in the experimental laboratory, accounting for the difference between life and death

The study of how solar- and lunar- related rhythms are governed by living pacemakers within organisms constitutes the scientific discipline of chronobiology. Fe

The time structure of living systems, which rules the autonomous temporal order of organisms as well as their coherence with the outer environment, has aroused

With the invitation to edit this volume, I wanted to take the opportunity to assemble reviews on different aspects of circadian clocks and rhythms. Although mos