Product Description

Many people know more about the planets Venus and Mars than they do about our home planet, Earth. Unique in our solar system, and so far as we know in the Universe itself, the Earth has been evolving for the past five billion years, and is the result of the dynamic interplay of astronomical, physical, and chemical forces ranging from the vast to the barely perceptible. The evolution of the Earth has never been predictable. Life has come very close to being extinguished many times. Aftereach such crisis, the survivors and their genes have diversified and grown in number to exploit all opportunities. Without such traumas it is hardly likely that evolution's pace could have reached its present advanced level; that of conscious life capable of changing the world, contemplating it, and in doing so changing itself at geologically stupendous rates. In Stepping Stones, Stephen Drury explores how such a seemingly fragile world could have been formed and developed. Looking at the astonishing leaps, and near catastrophes that have occurred along the way, intermingled with inexorable but slow change, the book interweaves the evidence from geology, physics, biology, and chemistry, to tell an extraordinary story of the Earth's evolution spanning nearly five billion years.

Product Details

• Amazon Sales Rank: #2307489 in Books
• Published on: 2001-03-01
• Original language: English
• Binding: Paperback
• 430 pages

From Publishers Weekly
Reaching across the five-billion year history of Earth and across the disciplines of geology, chemistry, physics, anthropology and biology, this professor of earth sciences at the Open University in London presents an erudite synopsis of the history of our blue planet. By addressing huge (the evolution of stars) as well as microscopic (the origin of bacteria) phenomena, he ably demonstrates that the same physical laws apply to the development of both. Longstanding disputes over theories such as continental drift are presented with flair. Drury also weighs in on quite a few contemporary controversies, including the cause of the planet's periodic mass extinctions, the nature of the relationship between Neanderthals and Homo sapiens and the reason for the extinction of the former, and the origin and spread of early humans. Although he barely touches on our current environmental situation, he provides a great deal of pertinent background material when he discusses the patterns and causes of natural climatic change on the planet. Drury has a knack for breaking down complicated theories and presenting them in digestible pieces only occasionally toughened by technical language. His prose is scholarly, but infused with a friendliness that marks him as an exceptional teacher and makes his book a fine contribution to the field. 12 halftones, 103 line drawings. (Aug.)
Copyright 1999 Reed Business Information, Inc.

From Library Journal
This is an ambitious book. In some 400 pages, Drury (earth sciences, Open Univ.) details how the earth's systems operate, from its internal heat engines and migrating continents to its weather, the origin of its life forms, and even the evolution of human culture. Along the way, Drury explains the carbon and calcium cycles, how eukaryotes arose, how tectonics affects air and water movement, and the possible causes of the great Permian extinction, when 90 percent of all life was exterminated. Drury's audience seems to be the educated public, but the complexity of the subject matter inevitably leads to detailed diagrams and technical terminology. If not for an occasional disconcerting lapse into slang and clich? apparently intended to reach the lay reader, this would be thoroughly enjoyable. While not the best of the recent influx of books on this subject, this book certainly holds its own, presenting a wealth of geophysical detail that most others gloss over. For public and undergraduate libraries.ALloyd Davidson, Seeley G. Mudd Lib. for Science & Engineering, Northwestern Univ., Evanston, IL
Copyright 1999 Reed Business Information, Inc.

From Kirkus Reviews
For all its detailed ramblings, a breezily erudite exploration of how our planet works (or at least the current thinking thereon, which, like Earth itself, undergoes periodic cataclysmic changes), from British geologist Drury (Open Univ.). He fashions here a sumptuous brocade of earth science, one that works many threads into its complex finish. Start with quantum theory, as everything is in flux, changing, giving and taking energy, on the move; otherwise, ``even if such a state existed, we would not know, simply because there would be no signal of any kind.'' Understand that you will need a smattering of organic and inorganic chemistry to entertain notions of lifes origin, when information-rich molecules assembled themselves and began to reproduce. And as chaos and long odds have played so critical a role in Earth's progressconvulsive punctuations out of the blue, like meteors, or from deep within, like flood basaltsDrury suggests that an open mind is a necessity for entertaining dangerous and exciting ideas, like the complexity-theory model on the origins of life. His unfurling of theories is sensible, if rapid, and mostly painless. Theres a reason why he introduces the Stefan-Boltzmann law, which states that the baroque architecture of biological molecules hangs on a scaffold of carbon and hydrogen and oxygen, and that clay may have mediated the building of proto-RNA. The reason is that understanding, as Drury sees it, is a mad and quite beautiful jig of fielding knotty ideas thrown at you with increasing velocity from many fronts, and seeing if and how they fit in the big picture. And winningly, he displays an activist's urge to share his knowledge, particularly in those venues where political and economic repression squelches learning and threatens the stability of our environmental processes. A geological text of the accessibly rarified sortranging, undogmatic, divertingwith a light-handed infusion of ethics thrown into the bargain. (12 photos, 103 illustrations) -- Copyright ©1999, Kirkus Associates, LP. All rights reserved.