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The Two-Mile Time Machine By Richard B. Alley

The Two-Mile Time Machine by Richard B. Alley

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Summary

Offers an account of the wildly fluctuating climate that characterized most of prehistory - long deep freezes alternating briefly with mild conditions - and explains that we humans have experienced an unusually temperate climate. The author warns, our comfortable environment could come to an end in a matter of years.

The Two-Mile Time Machine Summary

The Two-Mile Time Machine: Ice Cores, Abrupt Climate Change, and Our Future by Richard B. Alley

Richard Alley, one of the world's leading climate researchers, tells the fascinating history of global climate changes as revealed by reading the annual rings of ice from cores drilled in Greenland. In the 1990s he and his colleagues made headlines with the discovery that the last ice age came to an abrupt end over a period of only three years. Here Alley offers the first popular account of the wildly fluctuating climate that characterized most of prehistory - long deep freezes alternating briefly with mild conditions - and explains that we humans have experienced an unusually temperate climate. But, he warns, our comfortable environment could come to an end in a matter of years.The "Two-Mile Time Machine" begins with the story behind the extensive research in Greenland in the early 1990s, when scientists were beginning to discover ancient ice as an archive of critical information about the climate. Drilling down two miles into the ice, they found atmospheric chemicals and dust that enabled them to construct a record of such phenomena as wind patterns and precipitation over the past 110,000 years. The record suggests that "switches" as well as "dials" control the earth's climate, affecting, for example, hot ocean currents that today enable roses to grow in Europe farther north than polar bears grow in Canada.Throughout most of history, these currents switched on and off repeatedly (due partly to collapsing ice sheets), throwing much of the world from hot to icy and back again in as little as a few years. Alley explains the discovery process in terms the general reader can understand, while laying out the issues that require further study: What are the mechanisms that turn these dials and flip these switches? Is the earth due for another drastic change, one that will reconfigure coastlines or send certain regions into severe drought? Will global warming combine with natural variations in Earth's orbit to flip the North Atlantic switch again?Predicting the long-term climate is one of the greatest challenges facing scientists in the twenty-first century, and Alley tells us what we need to know in order to understand and perhaps overcome climate changes in the future.

The Two-Mile Time Machine Reviews

Winner of the 2001 Book Award in Science, Phi Beta Kappa One of Choices Outstanding Academic Titles for 2001 "Although not all scientists will agree with Alley's conclusions, [this] engaging book--a brilliant combination of scientific thriller, memoir and environmental science--provides instructive glimpses into our climatic past and global future ... "--Publisher's Weekly "Alley's ... striking finding is that the earth's climate has always been wildly variable and subject to dramatic swings--except during the past 10,000 years. So the period during which humankind has established itself across the globe and made the transition from grubby bands of hunter-gatherers to the dubious majesty of global capitalism corresponds exactly to a freakishly stable period in the earth's climate."--Angus Clarke, The Times of London "With a highly readable style designed to capture and stimulate the imagination of his students, Alley explains some of the complexities of Earth system science with a minimum of jargon. This book is not just for students: it will be readily accessible to a wide audience that should be aware of its contents."--David Peel, New Scientist "[A] provocative little book ... a compelling tale of climate sleuthing ...[Alley] is authoritative without being dogmatic, concerned without being alarmist."--Robert C. Cowen, Christian Science Monitor "A fascinating journey into the geologic past and the history of the Earth's climate ... Alley ends his entertaining book by polishing his crystal ball, envisioning what the future climate will be, and what we might do about it."--J.A. Rial, American Scientist "A superlative account of a complex topic ... It is refreshingly straightforward to read, often humorous, yet still deadly serious, complete with anecdotes and understandable explanations of complex processes."--Choice "Books in which scientists write about their professional experience and describe in lay terms the stuff that makes them excited about science rarely disappoint. Richard Alley's The Two Mile Time Machine is no exception. It describes a fascinating journey into the geologic past and the history of the Earth's climate... Alley ends his entertaining book by polishing his crystal ball, envisioning what the future climate will be, and what we might do about it."--J.A. Rial, American Scientist "[A] superb book... Alley demonstrates that the scientific understanding of climate is both a lot more complex, and a lot simpler, than public perceptions might indicate...The Two-Mile Time Machine restores some of the joy of discovery that has always been present in scientific work, but is often lost amidst today's furious research pace and compressed news cycles."--Cathering H. Crouch, Books and Culture "A fascinating first-hand story... [A]n engaging narrative about the processes of obtaining, analyzing, and interpreting the ice cores... Scientists, students, and the general public all need to know the present state of our incomplete understanding of the global climate system. This book provides an excellent foundation"--Al Bartlett, American Journal of Physics "It is ... refreshing to read a book that tells us in easy words, but with sufficient depth, how scientists have obtained the information about past climate change that is the basis for worries about the future. Richard Alley is a world authority in the science of ice cores and climate, and his book fills the large gap between technical and scholarly words for students of climate science and the short articles about these topics that are often found in the popular science magazines. The book addresses the interested layperson; following the story does not require special scientific knowledge. [It] is an excellent messenger of scientific endeavor and the enrichment this brings to society."--Thomas Stocker, Bulletin of the American Meteorological Society

About Richard B. Alley

Richard B. Alley, Professor of Geosciences at Pennsylvania State University, where he teaches and conducts research on climate change and glacier behavior. A Fellow of the American Geophysical Union, he recently chaired the National Research Council committee that produced the report "Abrupt Climate Changes: Inevitable Surprises." He has won both teaching and research awards for his work, which has included five expeditions to Greenland and three to Antarctica. He has published numerous articles in leading journals such as "Science, Nature," and "Scientific American".

Table of Contents

List of Illustrations vii Part I Setting The Stage Chapter 1 Fast Forward 3 Chapter 2 Pointers to the Past 11 Part II Reading The Record Chapter 3 Going to Greenland 17 Chapter 4 The Icy Archives--Ice Sheets and Glaciers 31 Chapter 5 Ice Age through the Ice Age 41 Chapter 6 How Cold of Old? 59 Chapter 7 Dust in the Wind 71 Chapter 8 Tiny Bubbles in the Ice 77 Part III Crazy Climates Chapter 9 The Saurian Sauna 83 Chapter 10 The Solar System Swing 91 Chapter 11 Dancing to the Orbital Band 99 Chapter 12 What the Worms Turned 109 Part IV Why The Weirdness? Chapter 13 How Climate Works 131 Chapter 14 A Chaotic Conveyor? 147 Chapter 15 Shoving the System 159 Part V Coming Craziness? Chapter 16 Fuelish 169 Chapter 17 Down the Road 181 Chapter 18 An Ice-Core View of the Future 185 Appendixes 1. A Cast of Characters 193 2. Usage of Units 199 Sources and Related Information 201 Acknowledgments 223 Index 225

Additional information

GOR011109878
9780691102962
0691102961
The Two-Mile Time Machine: Ice Cores, Abrupt Climate Change, and Our Future by Richard B. Alley
Used - Like New
Paperback
Princeton University Press
2002-07-21
240
Runner-up for Choice Magazine Outstanding Reference/Academic Book Award 2001
Book picture is for illustrative purposes only, actual binding, cover or edition may vary.
The book has been read, but looks new. The book cover has no visible wear, and the dust jacket is included if applicable. No missing or damaged pages, no tears, possible very minimal creasing, no underlining or highlighting of text, and no writing in the margins

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