From Publishers Weekly
Are you a morning "lark" or a "night owl"? Do you put your feet up after lunch, or can you get by on a few hours' sleep? Foster, a professor of molecular neuroscience in London, and Kreitzman (The 24 Hour Society) survey the biological clocks that dictate circadian rhythms, the daily cycles that affect creatures from cockroaches to humans. A little bundle of nerve cells in the front of the brain called the suprachiasmatic nuclei is responsible for many circadian functions in mammals. Other controls may be embedded in our genes. The authors explain that all living creatures run on several different biological clocks simultaneously: some make it possible for us to recognize the passage of short intervals of time, whereas others (in the retina) respond to light and regulate our bodily functions over 24 hours and even longer cycles. Your very perception of time depends on your body temperature, which varies by almost one degree Celsius during the course of a day. In their final chapters, the authors explain that the very efficacy of medication for many diseases, notably cancer, depends on when it is administered. Biology buffs will marvel at the fascinating material, and medical professionals should put the book at the top of their must-read lists. Copyright © Reed Business Information, a division of Reed Elsevier Inc. All rights reserved.

Eberhard Gwinner, Science
". . . remarkably comprehensive . . . lucid . . . effective overview of an exciting subject that has ramifications for a great variety of biological disciplines."

Review
“Despite 40 years of research and several lines of evidence, awareness of chronotherapy is still low in the medical and pharmaceutical world. Perhaps this book will start changing that.”—Scotland on Sunday


Book Description
An eye-opening discussion of how biological clocks affect the lives of all living organisms

Why can’t teenagers get out of bed in the morning? How do bees tell the time? Why do some plants open and close their flowers at the same time each day? Why do so many people suffer the misery of jet lag? In this fascinating book, Russell Foster and Leon Kreitzman explain the significance of the biological clock, showing how it has played an essential role in evolution and why it continues to play a vitally important role in all living organisms.

The authors tell us that biological clocks are embedded in our genes and reset at sunrise and sunset each day to link astronomical time with an organism’s internal time. They discuss how scientists are working out the clockwork mechanisms and what governs them, and they describe how organisms measure different intervals of time, how they are adapted to various cycles, and how light coordinates the time within to the external world. They review problems that can be caused by malfunctioning biological clocks--including jet lag, seasonal affective disorder, and depression. And they warn that although new drugs are being promoted to allow us to stay awake for longer periods, a 24/7 lifestyle can have a harmful impact on our health, both as individuals and as a society.

<!--“In this accessible and richly informed book, Russell Foster and Leon Kreitzman explore the meaning, significance, and mechanism of ancient biological clocks in our own day-to-day lives and in those of other life forms on earth.”--Steven Rose, author of Lifelines: Biology Beyond Determinism

“A fascinating account, both technical and very readable, of how time influences life.”--Lewis Wolpert, author of The Unnatural Nature of Science

“A fascinating book about circadean rhythms. . . . The scope of the book as a whole is extraordinary.”--James Kingsland, New Scientist-->


From the Inside Flap
"Vintage Polkinghorne: clear, informed, interdisciplinarily sophisticated, compelling."--Miroslav Volf, Yale Divinity School "Polkinghorne writes convincingly, fairly, and with nuance, choosing relevant and sometimes wonderfully surprising examples from nature or the Bible. He provides dozens of almost completely new ways of seeing connections among various phenomena."--Guy Fitch Lytle III, The School of Theology, The University of the South, Sewanee "This book makes a vital contribution to the dialogue between science and theology. Polkinghorne is unique in his desire to make the interaction a two-way relationship, where science informs theology and theology illuminates science."--Nathan J. Hallanger, The Center for Theology and the Natural Sciences at the Graduate Theological Union

About the Author
Russell Foster is professor of molecular neuroscience at Imperial College, London, and is a leading expert on chronobiology. Leon Kreitzman, a writer and broadcaster, is the author of The 24 Hour Society.

FROM THE PUBLISHER

Why can't teenagers get out of bed in the morning? How do bees tell the time? Why do some plants open and close their flowers at the same time each day? Why do so many people suffer the misery of jet lag? In this fascinating book, Russell Foster and Leon Kreitzman explain the significance of the biological clock, showing how it has played an essential role in evolution and why it continues to play a vitally important role in all living organisms.

The authors tell us that biological clocks are embedded in our genes and reset at sunrise and sunset each day to link astronomical time with an organism's internal time. They discuss how scientists are working out the clockwork mechanisms and what governs them, and they describe how organisms measure different intervals of time, how they are adapted to various cycles, and how light coordinates the time within to the external world. They review problems that can be caused by malfunctioning biological clocks -- including jet lag, seasonal affective disorder, and depression. And they warn that although new drugs are being promoted to allow us to stay awake for longer periods, a 24/7 lifestyle can have a harmful impact on our health, both as individuals and as a society.

FROM THE CRITICS

Publishers Weekly