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Author: J. David Archibald
Publisher: JHU Press
ISBN: 0801898056
Category : Nature
Languages : en
Pages : 121
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Book Description
This study identifies the fall of dinosaurs as the factor that allowed mammals to evolve into the dominant tetrapod form. It refutes the single-cause impact theory for dinosaur extinction and demonstrates that multiple factors--massive volcanic eruptions, loss of shallow seas, and extraterrestrial impact--likely led to their demise. While their avian relatives ultimately survived and thrived, terrestrial dinosaurs did not. Taking their place as the dominant land and sea tetrapods were mammals, whose radiation was explosive following nonavian dinosaur extinction. The author argues that because of dinosaurs, Mesozoic mammals changed relatively slowly for 145 million years compared to the prodigious Cenozoic radiation that followed. Finally out from under the shadow of the giant reptiles, Cenozoic mammals evolved into the forms we recognize today in a mere ten million years after dinosaur extinction.
Author: J. David Archibald
Publisher: JHU Press
ISBN: 0801898056
Category : Nature
Languages : en
Pages : 121
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Book Description
This study identifies the fall of dinosaurs as the factor that allowed mammals to evolve into the dominant tetrapod form. It refutes the single-cause impact theory for dinosaur extinction and demonstrates that multiple factors--massive volcanic eruptions, loss of shallow seas, and extraterrestrial impact--likely led to their demise. While their avian relatives ultimately survived and thrived, terrestrial dinosaurs did not. Taking their place as the dominant land and sea tetrapods were mammals, whose radiation was explosive following nonavian dinosaur extinction. The author argues that because of dinosaurs, Mesozoic mammals changed relatively slowly for 145 million years compared to the prodigious Cenozoic radiation that followed. Finally out from under the shadow of the giant reptiles, Cenozoic mammals evolved into the forms we recognize today in a mere ten million years after dinosaur extinction.
Author: Thomas Stainforth Kemp
Publisher: Oxford University Press
ISBN: 0198766947
Category : Nature
Languages : en
Pages : 169
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Book Description
Relative newcomers within the story of evolution, mammals are hugely successful and have colonized land, water, and air. Tom Kemp discusses the great diversity of mammalian species, and looks at how their very disparate characteristics, physiologies, and behaviours are all largely driven by one uniting factor: endothermy, or warm-bloodedness.
Author: Annalee Newitz
Publisher: Anchor
ISBN: 0385535929
Category : Science
Languages : en
Pages : 333
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Book Description
In its 4.5 billion–year history, life on Earth has been almost erased at least half a dozen times: shattered by asteroid impacts, entombed in ice, smothered by methane, and torn apart by unfathomably powerful megavolcanoes. And we know that another global disaster is eventually headed our way. Can we survive it? How? As a species, Homo sapiens is at a crossroads. Study of our planet’s turbulent past suggests that we are overdue for a catastrophic disaster, whether caused by nature or by human interference. It’s a frightening prospect, as each of the Earth’s past major disasters—from meteor strikes to bombardment by cosmic radiation—resulted in a mass extinction, where more than 75 percent of the planet’s species died out. But in Scatter, Adapt, and Remember, Annalee Newitz, science journalist and editor of the science Web site io9.com explains that although global disaster is all but inevitable, our chances of long-term species survival are better than ever. Life on Earth has come close to annihilation—humans have, more than once, narrowly avoided extinction just during the last million years—but every single time a few creatures survived, evolving to adapt to the harshest of conditions. This brilliantly speculative work of popular science focuses on humanity’s long history of dodging the bullet, as well as on new threats that we may face in years to come. Most important, it explores how scientific breakthroughs today will help us avoid disasters tomorrow. From simulating tsunamis to studying central Turkey’s ancient underground cities; from cultivating cyanobacteria for “living cities” to designing space elevators to make space colonies cost-effective; from using math to stop pandemics to studying the remarkable survival strategies of gray whales, scientists and researchers the world over are discovering the keys to long-term resilience and learning how humans can choose life over death. Newitz’s remarkable and fascinating journey through the science of mass extinctions is a powerful argument about human ingenuity and our ability to change. In a world populated by doomsday preppers and media commentators obsessively forecasting our demise, Scatter, Adapt, and Remember is a compelling voice of hope. It leads us away from apocalyptic thinking into a future where we live to build a better world—on this planet and perhaps on others. Readers of this book will be equipped scientifically, intellectually, and emotionally to face whatever the future holds.
Author: Pascal Neige
Publisher: Elsevier
ISBN: 0081004745
Category : Nature
Languages : en
Pages : 147
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Book Description
The fossil record offers a surprising image: that of evolutionary radiations characterized by intense increases in cash or by the sudden diversification of a single species group, while others stagnate or die out. In a modern world, science carries an often pessimistic message, surrounded by studies of global warming and its effects, extinction crisis, emerging diseases and invasive species. This book fuels frequent "optimism" of the sudden increase in biodiversity by exploring this natural phenomenon. Events of Increased Biodiversity: Evolutionary Radiations in the Fossil Record explores this natural phenomenon of adaptive radiation including its effect on the increase in biodiversity events, their contribution to the changes and limitations in the fossil record, and examines the links between ecology and paleontology's study of radiation. - Details examples of evolutionary radiations - Explicitly addresses the effect of adaptation driven by ecological opportunity - Examines the link between ecology and paleontology's study of adaptive radiation
Author: Gregory P. Wilson
Publisher: Geological Society of America
ISBN: 0813725038
Category : Science
Languages : en
Pages : 396
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Book Description
"The chapters represent a surge of field and laboratory research activity, illustrating the impacts of new and refined methods and tools. This volume explores geologic and biologic history preserved in the strata bounding the Cretaceous-Paleogene boundary"--Provided by publisher.
Author: Winfried Henke
Publisher: Springer Science & Business Media
ISBN: 3540324747
Category : Science
Languages : en
Pages : 2057
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Book Description
This 3-volume handbook brings together contributions by the world ́s leading specialists that reflect the broad spectrum of modern palaeoanthropology, thus presenting an indispensable resource for professionals and students alike. Vol. 1 reviews principles, methods, and approaches, recounting recent advances and state-of-the-art knowledge in phylogenetic analysis, palaeoecology and evolutionary theory and philosophy. Vol. 2 examines primate origins, evolution, behaviour, and adaptive variety, emphasizing integration of fossil data with contemporary knowledge of the behaviour and ecology of living primates in natural environments. Vol. 3 deals with fossil and molecular evidence for the evolution of Homo sapiens and its fossil relatives.
Author: Donald R. Prothero
Publisher: JHU Press
ISBN: 9780801871351
Category : Nature
Languages : ru
Pages : 334
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Book Description
Since the extinction of the dinosaurs, hoofed mammals have been the planet's dominant herbivores. Native to all continents except Australia and Antarctica, recent paleontological and biological discoveries have deepened understanding of their evolution. This text reveals their evolutionary history.
Author: George Gaylord Simpson
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 256
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Book Description
Author: Vladimir A. Krasnopolsky
Publisher: Cambridge University Press
ISBN: 1107145260
Category : Science
Languages : en
Pages : 575
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Book Description
Reviews the fundamentals for studying chemical compositions of planetary atmospheres and ionospheres, for graduate students and researchers.
Author: Natasha Zaretsky
Publisher: Columbia University Press
ISBN: 0231542488
Category : History
Languages : en
Pages : 316
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Book Description
On March 28, 1979, the worst nuclear reactor accident in U.S. history occurred at the Three Mile Island power plant in Central Pennsylvania. Radiation Nation tells the story of what happened that day and in the months and years that followed, as local residents tried to make sense of the emergency. The near-meltdown occurred at a pivotal moment when the New Deal coalition was unraveling, trust in government was eroding, conservatives were consolidating their power, and the political left was becoming marginalized. Using the accident to explore this turning point, Natasha Zaretsky provides a fresh interpretation of the era by disclosing how atomic and ecological imaginaries shaped the conservative ascendancy. Drawing on the testimony of the men and women who lived in the shadow of the reactor, Radiation Nation shows that the region's citizens, especially its mothers, grew convinced that they had sustained radiological injuries that threatened their reproductive futures. Taking inspiration from the antiwar, environmental, and feminist movements, women at Three Mile Island crafted a homegrown ecological politics that wove together concerns over radiological threats to the body, the struggle over abortion and reproductive rights, and eroding trust in authority. This politics was shaped above all by what Zaretsky calls "biotic nationalism," a new body-centered nationalism that imagined the nation as a living, mortal being and portrayed sickened Americans as evidence of betrayal. The first cultural history of the accident, Radiation Nation reveals the surprising ecological dimensions of post-Vietnam conservatism while showing how growing anxieties surrounding bodily illness infused the political realignment of the 1970s in ways that blurred any easy distinction between left and right.
