The Mass-Extinction Debates PDF Download

Author: Douglas H. Erwin
Publisher: Princeton University Press
ISBN: 0691165653
Category : Science
Languages : en
Pages : 314

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Book Description
Some 250 million years ago, the earth suffered the greatest biological crisis in its history. Around 95 percent of all living species died out—a global catastrophe far greater than the dinosaurs' demise 185 million years later. How this happened remains a mystery. But there are many competing theories. Some blame huge volcanic eruptions that covered an area as large as the continental United States; others argue for sudden changes in ocean levels and chemistry, including burps of methane gas; and still others cite the impact of an extraterrestrial object, similar to what caused the dinosaurs' extinction. Extinction is a paleontological mystery story. Here, the world's foremost authority on the subject provides a fascinating overview of the evidence for and against a whole host of hypotheses concerning this cataclysmic event that unfolded at the end of the Permian. After setting the scene, Erwin introduces the suite of possible perpetrators and the types of evidence paleontologists seek. He then unveils the actual evidence--moving from China, where much of the best evidence is found; to a look at extinction in the oceans; to the extraordinary fossil animals of the Karoo Desert of South Africa. Erwin reviews the evidence for each of the hypotheses before presenting his own view of what happened. Although full recovery took tens of millions of years, this most massive of mass extinctions was a powerful creative force, setting the stage for the development of the world as we know it today. In a new preface, Douglas Erwin assesses developments in the field since the book's initial publication.

Author: Elizabeth Kolbert
Publisher: Henry Holt and Company
ISBN: 0805099794
Category : Nature
Languages : en
Pages : 336

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Book Description
ONE OF THE NEW YORK TIMES BOOK REVIEW'S 10 BEST BOOKS OF THE YEAR A major book about the future of the world, blending intellectual and natural history and field reporting into a powerful account of the mass extinction unfolding before our eyes Over the last half a billion years, there have been five mass extinctions, when the diversity of life on earth suddenly and dramatically contracted. Scientists around the world are currently monitoring the sixth extinction, predicted to be the most devastating extinction event since the asteroid impact that wiped out the dinosaurs. This time around, the cataclysm is us. In The Sixth Extinction, two-time winner of the National Magazine Award and New Yorker writer Elizabeth Kolbert draws on the work of scores of researchers in half a dozen disciplines, accompanying many of them into the field: geologists who study deep ocean cores, botanists who follow the tree line as it climbs up the Andes, marine biologists who dive off the Great Barrier Reef. She introduces us to a dozen species, some already gone, others facing extinction, including the Panamian golden frog, staghorn coral, the great auk, and the Sumatran rhino. Through these stories, Kolbert provides a moving account of the disappearances occurring all around us and traces the evolution of extinction as concept, from its first articulation by Georges Cuvier in revolutionary Paris up through the present day. The sixth extinction is likely to be mankind's most lasting legacy; as Kolbert observes, it compels us to rethink the fundamental question of what it means to be human.

Author: A. Hallam
Publisher: OUP Oxford
ISBN: 0191078204
Category : Science
Languages : en
Pages : 328

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Book Description
Why do mass extinctions occur? The demise of the dinosaurs has been discussed exhaustively, but has never been out into the context of other extinction events. This is the first systematic review of the mass extinctions of all organisms, plant and animal, terrestrial and marine, that have occurred in the history of life. This includes the major crisis 250 million years ago which nearly wiped out all life on Earth. By examining current paleontological, geological, and sedimentological evidence of environmental changes, the cases for explanations based on climate change, marine regressions, asteroid or comet impact, anoxia, and volcanic eruptions are all critically evaluated.

Author: William Glen
Publisher: Stanford University Press
ISBN: 0804722862
Category : Science
Languages : en
Pages : 387

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Book Description
This book examines the arguments and behavior of the scientists who have been locked in conflict over two competing theories to explain why, 65 million years ago, most life on earth—including the dinosaurs—perished.

Author: Dan Abnett
Publisher: National Geographic Books
ISBN: 1845766938
Category : Fiction
Languages : en
Pages : 0

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Book Description
When an Entelodon goes on the rampage down Oxford Street, causing untold damage and loss of life, Cutter decides a new approach to tackling the anomalies is needed. However, his investigations expose him and the team to a violent encounter with a mysterious Russian scientist and a situation more catastrophic and frightening than they've ever faced before... When Cutter, Abby and Connor disappear without a trace, Lester and Jenny must use every trick in the book to try and track them down...

Author: Jonathan Yanez
Publisher: Independently Published
ISBN:
Category :
Languages : en
Pages : 256

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Book Description
Side effects have occurred. It was supposed to be a miracle drug. With it, true beauty is achieved. Now, saying goodbye to depression, anxiety, and loneliness is a breeze. Of course, anything that sounds too good to be true usually is. Because something has gone horribly wrong. When events take a turn for the worst, this corporation calls on its best. Taylor Hart is a Cleaner well-versed in sweeping questionable events under the proverbial rug. The only thing better than her crisis management skills is her right hook. But the rabbit hole Taylor is thrust into only goes deeper as she discovers the nefarious specifics around the miracle drug and its creators. Taylor is in a race against the clock to find a cure before the darkest parts of human nature are amplified and consume them all. Grab this chilling thriller for those of you who enjoy AG Riddle's Atlantis Gene, Justin Cronin's The Passage, or Max Brook's World War Z.

Author: Michael Charles Boulter
Publisher: Columbia University Press
ISBN: 0231128371
Category : Nature
Languages : en
Pages : 226

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Book Description
The head of the team analyzing Fossil Record 2, the largest database of information on extinct animals and plants, brings us a thoroughly researched introduction to the new developments in the science of life and a chilling account of the effects that humans have had on the planet based on his experience and research.

Author: Michael J. Benton
Publisher: Thames & Hudson
ISBN: 0500778604
Category : Science
Languages : en
Pages : 354

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Book Description
In this vast sweep of our Earths history, Michael Benton brings the deep past to life as never before. Deploying the cutting-edge tools in biology, chemistry, physics and geology that are transforming our understanding of previous environmental cataclysms including the incredible new discovery of a hitherto unknown extinction event he uncovers not only their lethal effects but also the processes that brought about such large-scale destruction. Beginning with the oldest extinction, Benton investigates the Late Ordovician, which set the evolution of the first animals on an entirely new course; the late Devonian, brought on by global warming; the cataclysmic End-Permian, which wiped out over 90 per cent of all life on Earth; and, book-ending the age of the dinosaurs, the newly discovered Carnian Pluvial Event and the End-Cretaceous asteroid. He examines how global warming, acid rain, ocean acidification, erupting volcanoes and meteorite impact have affected conditions on Earth, the drastic consequences for global ecology, and how life in turn survived, adapted and evolved. This expert retelling of scientific breakthroughs allows us to link long-ago upheavals to our modern crises. As todays climate scientists and political leaders grapple to understand these processes and our planet enters the sixth great extinction, these insights from the past may hold the key to survival.

Author: Michael Hannah
Publisher: Cambridge University Press
ISBN: 1108911390
Category : Science
Languages : en
Pages : 263

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Book Description
Are we now entering a mass extinction event? What can mass extinctions in Earth's history tell us about the Anthropocene? What do mass extinction events look like and how does life on Earth recover from them? The fossil record reveals periods when biodiversity exploded, and short intervals when much of life was wiped out in mass extinction events. In comparison with these ancient events, today's biotic crisis hasn't (yet) reached the level of extinction to be called a mass extinction. But we are certainly in crisis, and current parallels with ancient mass extinction events are profound and deeply worrying. Humanity's actions are applying the same sorts of pressures - on similar scales - that in the past pushed the Earth system out of equilibrium and triggered mass extinction events. Analysis of the fossil record suggests that we still have some time to avert this disaster: but we must act now.

Author: National Academy of Sciences
Publisher: National Academies Press
ISBN: 0309444225
Category : Science
Languages : en
Pages : 433

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Book Description
Biodiversity-the genetic variety of life-is an exuberant product of the evolutionary past, a vast human-supportive resource (aesthetic, intellectual, and material) of the present, and a rich legacy to cherish and preserve for the future. Two urgent challenges, and opportunities, for 21st-century science are to gain deeper insights into the evolutionary processes that foster biotic diversity, and to translate that understanding into workable solutions for the regional and global crises that biodiversity currently faces. A grasp of evolutionary principles and processes is important in other societal arenas as well, such as education, medicine, sociology, and other applied fields including agriculture, pharmacology, and biotechnology. The ramifications of evolutionary thought also extend into learned realms traditionally reserved for philosophy and religion. The central goal of the In the Light of Evolution (ILE) series is to promote the evolutionary sciences through state-of-the-art colloquia-in the series of Arthur M. Sackler colloquia sponsored by the National Academy of Sciences-and their published proceedings. Each installment explores evolutionary perspectives on a particular biological topic that is scientifically intriguing but also has special relevance to contemporary societal issues or challenges. This tenth and final edition of the In the Light of Evolution series focuses on recent developments in phylogeographic research and their relevance to past accomplishments and future research directions.