In The Blink Of An Eye - Hardcover

Parker, Andrew

Hardcover

ISBN 10: 0738206075 ISBN 13: 9780738206073

Publisher: Basic Books, 2003

Synopsis

The Cambrian Explosion is universally referred to as biology's "Big Bang." About 550 million years ago, there was literally an explosion of life forms, as all the major animal groups suddenly and dramatically appeared. Why did it happen this way? Why didn't these creatures continue the slow, plodding pace of evolution, appearing only very gradually in the fossil record? Although several books have been written about this surprising event, none have explained why it occurred. Indeed, none were able to.Here, for the first time, Oxford zoologist Andrew Parker reveals his theory of this great flourishing of life. Parker's "Light Switch Theory" holds that it was the development of vision in primitive animals that caused the explosion. Precambrian creatures were unable to see, making it impossible to find friend or foe. With the evolution of the eye, the size, shape, color, and behavior of animals was suddenly revealed for the first time. Once the lights were "turned on," all animals had to either adapt or die, and in a geological instant, the world became a very different place. A controversial theory but one that is quickly gaining ground, the Light Switch Theory promises to revolutionize our understanding of life and light. Drawing on evidence not just from biology but also from geology, physics, chemistry, history, and art, In the Blink of an Eye is the fascinating story of a young scientist's intellectual journey, and a celebration of the scientific method.

About this title

About the Author

Andrew Parker is a Royal Society Research Fellow at Oxford University's Department of Zoology. He has been named by the London Times as one of the three most important young scientists in the world for his work in investigating and answering the great riddle of the Cambrian explosion. He lives in Oxfordshire, England.

Reviews

Oxford University zoologist Parker tackles one of biology's biggest mysteries in this nontechnical account. He provides a relatively simple explanation for the sudden explosion of life forms that defines the boundary between the pre-Cambrian and Cambrian eras approximately 543 million years ago: "The Cambrian explosion was triggered by the sudden evolution of vision" in simple organisms. In Parker's "Light Switch" theory, active predation became possible with the advent of vision, and prey species found themselves under extreme pressure to adapt in ways that would make them less likely to be spotted. New habitats opened as organisms were able to see their environment for the first time, and an enormous amount of specialization occurred as species differentiated. Parker claims that his theory is far more robust than previous attempts to explain the surge in diversity, even those most recently advanced by proponents of a snowball earth (the theory presented by Gabrielle Walker in Snowball Earth). In readable prose, Parker provides detailed information on the fossil record as well as a wealth of interesting material on the role light plays in environments and how vision operates across a host of species. Although at times his tangents are a bit distracting, Parker's book will bring his controversial ideas to the general public. Photos and line drawings.
Copyright 2003 Reed Business Information, Inc.

The cause of the sudden appearance of major life-forms 540 million years ago, known as the Cambrian explosion, has been paleontology's biggest mystery and, next to the disappearance of the dinosaurs, its most fascinating to onlookers outside the science. Within the discipline, a new solution to the enigma has been boldly advanced, offered here in popular form by its expositor. Oxford zoologist Parker proceeds methodically, explaining, for example, what a phylum is, a point crucial to his theory because, contrary to popular perception, most phyla existed before the Cambrian explosion, he maintains. He believes that explaining the explosion means explaining the evolutionary advantages of organisms' external appearances, as discussed in the aptly titled Wonderful Life (1989) by Stephen Jay Gould. Building on Gould, Parker also revisits the celebrated Burgess shale central to that book, emphasizing the evolution of the eye in terms of its ability to detect light. Something fundamental changed in the earthly intensity of light and then in prey-predator dynamics, avers Parker, whose clarity will thrill science fans, as will his revolutionary theory. Gilbert Taylor
Copyright © American Library Association. All rights reserved

Edition details

• Publisher: Basic Books
• Publication date: 2003
• Language: English
• ISBN 10: 0738206075
• ISBN 13: 9780738206073
• Binding: Hardcover
• Edition number: 1
• Number of pages: 352