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.

"Presents the science behind world climate changes, including causes and possible solutions"--Provided by publisher.

At first, the job as clinical director at Alcor Life Extension Foundation was an exciting change for veteran paramedic Larry Johnson: a well-funded research facility pushing the limits of modern biotech. But as he gained the trust of his eccentric coworkers and was promoted to acting COO, Larry was thrust into a nightmare world of scandalous controversy, gruesome practices, and deadly secrets.One secret Larry unearthed was the full, tragic, never-before-heard story of what truly happened to the body of baseball icon and American hero Ted Williams.Compelled by this and other horrific discoveries, Larry began copying documents, taking secret pictures, and ultimately wearing a wire every day at Alcor. He started living two lives-Alcorian by day, whistleblower by night.Beyond the senseless animal experiments, beyond the dumping of toxic chemicals and AIDS-contaminated blood into the public sewage system, these people saw themselves as the elite, the immortal saviors of mankind who would lead us into the future. Inside this cultlike mentality, anything seemed justified. Maybe even murder.Then Alcor found out. The death threats began.Fleeing from state to state, Larry was stalked and threatened again and again. They chased him through the streets. They left death threats under his windshield wipers. They terrorized his family. Larry Johnson never wanted to be a whistleblower. But he knows this story must be told.Written in Larry's own memorable voice, illustrated with never-before-seen photographs from inside Alcor, and verified by actual transcripts of his secret recordings, Frozen reads like a medical thriller-but every word is shockingly true.

The social, political, and cultural consequences of attempts to cheat death by freezing life. As the planet warms and the polar ice caps melt, naturally occurring cold is a resource of growing scarcity. At the same time, energy-intensive cooling technologies are widely used as a means of preservation. Technologies of cryopreservation support global food chains, seed and blood banks, reproductive medicine, and even the preservation of cores of glacial ice used to study climate change. In many cases, these practices of freezing life are an attempt to cheat death. Cryopreservation has contributed to the transformation of markets, regimes of governance and ethics, and the very relationship between life and death. In Cryopolitics, experts from anthropology, history of science, environmental humanities, and indigenous studies make clear the political and cultural consequences of extending life and deferring death by technoscientific means. The contributors examine how and why low temperatures have been harnessed to defer individual death through freezing whole human bodies; to defer nonhuman species death by freezing tissue from endangered animals; to defer racial death by preserving biospecimens from indigenous people; and to defer large-scale human death through pandemic preparedness. The cryopolitical lens, emphasizing the roles of temperature and time, provokes new and important questions about living and dying in the twenty-first century. Contributors Warwick Anderson, Michael Bravo, Jonny Bunning, Matthew Chrulew, Soraya de Chadarevian, Alexander Friedrich, Klaus Hoeyer, Frédéric Keck, Eben Kirksey, Emma Kowal, Joanna Radin, Deborah Bird Rose, Kim TallBear, Charis Thompson, David Turnbull, Thom van Dooren, Rebecca J. H. Woods

Discover and explore worlds containing unexpected life. As some scientists search for life on the frozen planet of Mars, others are discovering life in unexpected places here on Earth. Frozen Oceans follows the expeditions of polar scientists in the Arctic and Antarctic as they investigate the life found in and around the ice caps, which cover up to 13 percent of the Earth's surface. Every year during the harsh polar winter, the surface of the ocean freezes, forming a temporary ice layer called pack ice, or sea ice. The Antarctic is the site of the greatest seasonal event on Earth. In March, the air temperatures drop to as low as -40°F, the ocean, which turns to ice at 28.7°F, starts freezing at the incredible average rate of 2.22 square miles per minute! This is the first book to explain in non-technical terms and show with color photography the abundance of life on, in and under the ice. Topics include: The nature of pack ice Pack ice regions of the world Life within a block of ice Microbiology inside the ice Mammals, birds and ice. Scientists are continually being surprised by the abundance of life where no life was expected. For many years, ice was seen as an obstacle to exploration and a threat to life. The ice is now perceived as central to global ocean circulation as well as global climate patterns. Frozen Oceans is a must for anyone with an interest in the polar regions, marine biology and the Earth's environment.

From avalanches to glaciers, from seals to snowflakes, and from Shackleton's expedition to The Year Without Summer, Bill Streever journeys through history, myth, geography, and ecology in a year-long search for cold -- real, icy, 40-below cold. In July he finds it while taking a dip in a 35-degree Arctic swimming hole; in September while excavating our planet's ancient and not so ancient ice ages; and in October while exploring hibernation habits in animals, from humans to wood frogs to bears. A scientist whose passion for cold runs red hot, Streever is a wondrous guide: he conjures woolly mammoth carcasses and the ice-age Clovis tribe from melting glaciers, and he evokes blizzards so wild readers may freeze -- limb by vicarious limb.