The subject of this book is time, one of the small number of elusive essences of the world, unsubdued by human will. The three global problems of natural science, those of the origin of the Universe, life and consciousness, cannot be solved without finding out the nature of time. Without a good construction of time it is impossible to describe, to qualify, to forecast and to control various processes in the animate and inanimate nature. Special attention is paid to the ways of adequate inclusion of the properties of time in the derivation of the fundamental equations of motion for natural systems.Contents:Introduction. Motivations and Problems of Studying Time (A P Levich)Structure of Physical Space-Time (Yu S Vladimirov)Relative Statistical Model of Clocks and Physical Properties of Time (V V Aristov)G Backman's Conception of Organic Time and the Experience of Its Application (A M Maurins)Analysis of Meyen's Typological Concept of Time (A A Sharov)Biological Time, Its Organization, Hierarchy and Presentation by Complex Values (G E Mikhailovsky)Clocks for Studying Temporal Laws of Animal Development (T A Dettlaff)Mathematical Temporal Constructions (R I Pimenov)Time in the Earth Sciences (A D Armand)Time as Variability of Natural Systems: Ways of Quantitative Description of Charges and Creation of Changes by Substantial Flows (A P Levich)Time Structure of the World (V M Sarychev)Readership: General physicists, geologists, biologists and mathematicians.Key Features:Contributed by top researchers in mathematics and physics