In this engrossing and accessible book, Doug Macdougall explores the causes and effects of ice ages that have gripped our planet throughout its history, from the earliest known glaciation—nearly three billion years ago—to the present. Following the development of scientific ideas about these dramatic events, Macdougall traces the lives of many of the brilliant and intriguing characters who have contributed to the evolving understanding of how ice ages come about. As it explains how the great Pleistocene Ice Age has shaped the earth's landscape and influenced the course of human evolution, Frozen Earth also provides a fascinating look at how science is done, how the excitement of discovery drives scientists to explore and investigate, and how timing and chance play a part in the acceptance of new scientific ideas. Macdougall describes the awesome power of cataclysmic floods that marked the melting of the glaciers of the Pleistocene Ice Age. He probes the chilling evidence for "Snowball Earth," an episode far back in the earth's past that may have seen our planet encased in ice from pole to pole. He discusses the accumulating evidence from deep-sea sediment cores, as well as ice cores from Greenland and the Antarctic, that suggests fast-changing ice age climates may have directly impacted the evolution of our species and the course of human migration and civilization. Frozen Earth also chronicles how the concept of the ice age has gripped the imagination of scientists for almost two centuries. It offers an absorbing consideration of how current studies of Pleistocene climate may help us understand earth's future climate changes, including the question of when the next glacial interval will occur.

This book describes the effects of cold climates on the surface of the earth. Using scientific principles, the authors describe the evolution of ground thermal conditions and the origin of natural features such as frost heave, solifluction, slope instabilities, patterned ground, pingos and ice wedges. The thermodynamic conditions accompanying the freezing of water in porous materials are examined and their fundamental role in the ice segregation and frost heave processes is demonstrated in a clear and simple manner. This book concentrates on the analysis of the causes and effects of frozen ground phenomena, rather than on the description of the natural features characteristic of freezing or thawing ground. Its scientific approach provides a basis for geotechnical analyses such as those essential to resource development.

By tracing the English word permafrost back to its Russian roots, this unique intellectual history uncovers the multiple, contested meanings of permafrost as a scientific idea and environmental phenomenon.

"This is a highly readable account of the nature of ice ages throughout earth's history and the evolution of their scientific understanding since the introduction of the term by Louis Agassiz in the 1830s. The shifts in opinion on the merits of the various explanations of ice ages traced by Macdougall make fascinating reading."—Roger Barry, Director, National Snow and Ice Data Center "Frozen Earth is a thorough and compelling account of the history of ice on earth and of the scientists who uncovered the extraordinary role that ice ages have played in shaping our world."—Gabrielle Walker, author of Snowball Earth "A fascinating and important read."—Jack Repcheck, author of The Man Who Found Time "Macdougall takes us on a fascinating journey through the realm of ice age science. He deciphers some of the basic mysteries of the bitter climatic regimes that have gripped the earth in the past and will probably grip it again in the future. This engrossing book has important lessons for anyone concerned with global warming and future climatic change."—Brian Fagan, author of The Little Ice Age

A DEAD STAR IS HEADED FOR EARTH...THE SHIFT IN EARTH'S ORBIT WILL UNLEASH A NEW ICE AGE...AND THIS SUMMER WILL BE OUR LAST.THE NEWS BREAKSLogan Willis's life is falling apart: he lost his job and found out that his wife is cheating on him all in the same day. Thinking that his world has ended, Logan checks into a hotel and turns on the TV to see that he's not far wrong-radio telescopes have detected mysterious signals coming from inside our solar system, and the source is moving toward us at over 500 miles per second. The media concludes that these signals must be of an alien origin. Still reeling from the news, Logan gets a phone call from his brother-in-law. Richard is talking crazy about the end of the world again, but this time he doesn't sound so crazy.A DEADLY CONSPIRACY UNRAVELSMeanwhile, Richard, who is an astronomer working with the James Webb Space Telescope, is at the White House briefing the president to announce what he and the government have known for almost a decade: aliens are not invading, a frozen ball of gas is. The so-called rogue star is predicted to make a near pass with Earth, disrupting our orbit and unleashing an ice age, the likes of which we haven't seen for millions of years.WE'RE PUTTING A COLONY ON MARSGovernment insider, Billionaire Ackron Massey, has received a steady flow of funding over the past decade for his company, Starcast, to put a colony on Mars. Over the same period he's been using his personal fortune to create a colony closer to home where he plans to ride out the coming storm along with a thousand of the smartest people on the planet. Humanity will need seeds to plant in the ashes after the chaos clears.AND WARS IGNITEWhen the true nature of the threat becomes known, the nations of Earth prepare to fight over all the warmest parts of the planet. But as war fleets set sail and armies begin marching south, a stunning discovery is made that will change a lot more than just the weather....

This book describes the effects of cold climates on the surface of the earth. Using scientific principles, the authors describe the evolution of ground thermal conditions and the origin of natural features such as frost heave, solifluction, slope instabilities, patterned ground, pingos and ice wedges. The thermodynamic conditions accompanying the freezing of water in porous materials are examined and their fundamental role in the ice segregation and frost heave processes is demonstrated in a clear and simple manner. This book concentrates on the analysis of the causes and effects of frozen ground phenomena, rather than on the description of the natural features characteristic of freezing or thawing ground. Its scientific approach provides a basis for geotechnical analyses such as those essential to resource development.