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Author: Donald R. Prothero
Publisher: Smithsonian Institution
ISBN: 1588346366
Category : Nature
Languages : en
Pages : 208
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Book Description
The fascinating true story of the explosion of the Mount Toba supervolcano--the Earth's largest eruption in the past 28 million years--and its lasting impact on Earth and human evolution Some 73,000 years ago, the huge dome of Mount Toba, in today's Sumatra, Indonesia, began to rumble. A deep vibration shook the entire island. Jets of steam and ash emanated from the summit, followed by an explosion louder than any sound heard by Homo sapiens since our species evolved on Earth. The eruption of the Toba supervolcano released the energy of a million tons of explosives; seven hundred cubic miles of magma spewed outward in an explosion forty times larger than the largest hydrogen bomb and more than a thousand times as powerful as the Krakatau eruption in 1883. So much ash and debris was injected into the stratosphere that it partially blocked the sun's radiation and caused global temperatures to drop by five to nine degrees. It took a full decade for Earth to recover to its pre-eruption temperatures. When Humans Nearly Vanished presents the controversial argument that the Toba catastrophe nearly wiped out the human race, leaving only about a thousand to ten thousand breeding pairs of humans worldwide. Human genes today show evidence of a "genetic bottleneck," an effect seen when a population of organisms becomes so small that their genetic diversity is greatly reduced. This group of survivors could be the ancestors of all humans alive today. Donald R. Prothero explores the geological and biological evidence supporting the Toba bottleneck theory; reveals how the explosion itself was discovered; and offers insight into how the world changed afterward and what might happen if such an eruption occurred today. Prothero's riveting account of this calamitous supervolcanic explosion is not to be missed.
Author: Donald R. Prothero
Publisher: Smithsonian Institution
ISBN: 1588346366
Category : Nature
Languages : en
Pages : 208
Get Book
Book Description
The fascinating true story of the explosion of the Mount Toba supervolcano--the Earth's largest eruption in the past 28 million years--and its lasting impact on Earth and human evolution Some 73,000 years ago, the huge dome of Mount Toba, in today's Sumatra, Indonesia, began to rumble. A deep vibration shook the entire island. Jets of steam and ash emanated from the summit, followed by an explosion louder than any sound heard by Homo sapiens since our species evolved on Earth. The eruption of the Toba supervolcano released the energy of a million tons of explosives; seven hundred cubic miles of magma spewed outward in an explosion forty times larger than the largest hydrogen bomb and more than a thousand times as powerful as the Krakatau eruption in 1883. So much ash and debris was injected into the stratosphere that it partially blocked the sun's radiation and caused global temperatures to drop by five to nine degrees. It took a full decade for Earth to recover to its pre-eruption temperatures. When Humans Nearly Vanished presents the controversial argument that the Toba catastrophe nearly wiped out the human race, leaving only about a thousand to ten thousand breeding pairs of humans worldwide. Human genes today show evidence of a "genetic bottleneck," an effect seen when a population of organisms becomes so small that their genetic diversity is greatly reduced. This group of survivors could be the ancestors of all humans alive today. Donald R. Prothero explores the geological and biological evidence supporting the Toba bottleneck theory; reveals how the explosion itself was discovered; and offers insight into how the world changed afterward and what might happen if such an eruption occurred today. Prothero's riveting account of this calamitous supervolcanic explosion is not to be missed.
Author: Donald R. Prothero
Publisher: Smithsonian Institution
ISBN: 1588346358
Category : Nature
Languages : en
Pages : 210
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Book Description
The fascinating true story of the explosion of the Mount Toba supervolcano--the Earth's largest eruption in the past 28 million years--and its lasting impact on Earth and human evolution Some 73,000 years ago, the huge dome of Mount Toba, in today's Sumatra, Indonesia, began to rumble. A deep vibration shook the entire island. Jets of steam and ash emanated from the summit, followed by an explosion louder than any sound heard by Homo sapiens since our species evolved on Earth. The eruption of the Toba supervolcano released the energy of a million tons of explosives; seven hundred cubic miles of magma spewed outward in an explosion forty times larger than the largest hydrogen bomb and more than a thousand times as powerful as the Krakatau eruption in 1883. So much ash and debris was injected into the stratosphere that it partially blocked the sun's radiation and caused global temperatures to drop by five to nine degrees. It took a full decade for Earth to recover to its pre-eruption temperatures. When Humans Nearly Vanished presents the controversial argument that the Toba catastrophe nearly wiped out the human race, leaving only about a thousand to ten thousand breeding pairs of humans worldwide. Human genes today show evidence of a "genetic bottleneck," an effect seen when a population of organisms becomes so small that their genetic diversity is greatly reduced. This group of survivors could be the ancestors of all humans alive today. Donald R. Prothero explores the geological and biological evidence supporting the Toba bottleneck theory; reveals how the explosion itself was discovered; and offers insight into how the world changed afterward and what might happen if such an eruption occurred today. Prothero's riveting account of this calamitous supervolcanic explosion is not to be missed.
Author: Clive Oppenheimer
Publisher: Cambridge University Press
ISBN: 1139496395
Category : Science
Languages : en
Pages : 409
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Book Description
What does it take for a volcanic eruption to really shake the world? Did volcanic eruptions extinguish the dinosaurs, or help humans to evolve, only to decimate their populations with a super-eruption 73,000 years ago? Did they contribute to the ebb and flow of ancient empires, the French Revolution and the rise of fascism in Europe in the 19th century? These are some of the claims made for volcanic cataclysm. Volcanologist Clive Oppenheimer explores rich geological, historical, archaeological and palaeoenvironmental records (such as ice cores and tree rings) to tell the stories behind some of the greatest volcanic events of the past quarter of a billion years. He shows how a forensic approach to volcanology reveals the richness and complexity behind cause and effect, and argues that important lessons for future catastrophe risk management can be drawn from understanding events that took place even at the dawn of human origins.
Author: David Keys
Publisher: Ballantine Books
ISBN: 0345444361
Category : History
Languages : en
Pages : 441
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Book Description
It was a catastrophe without precedent in recorded history: for months on end, starting in A.D. 535, a strange, dusky haze robbed much of the earth of normal sunlight. Crops failed in Asia and the Middle East as global weather patterns radically altered. Bubonic plague, exploding out of Africa, wiped out entire populations in Europe. Flood and drought brought ancient cultures to the brink of collapse. In a matter of decades, the old order died and a new world—essentially the modern world as we know it today—began to emerge. In this fascinating, groundbreaking, totally accessible book, archaeological journalist David Keys dramatically reconstructs the global chain of revolutions that began in the catastrophe of A.D. 535, then offers a definitive explanation of how and why this cataclysm occurred on that momentous day centuries ago. The Roman Empire, the greatest power in Europe and the Middle East for centuries, lost half its territory in the century following the catastrophe. During the exact same period, the ancient southern Chinese state, weakened by economic turmoil, succumbed to invaders from the north, and a single unified China was born. Meanwhile, as restless tribes swept down from the central Asian steppes, a new religion known as Islam spread through the Middle East. As Keys demonstrates with compelling originality and authoritative research, these were not isolated upheavals but linked events arising from the same cause and rippling around the world like an enormous tidal wave. Keys's narrative circles the globe as he identifies the eerie fallout from the months of darkness: unprecedented drought in Central America, a strange yellow dust drifting like snow over eastern Asia, prolonged famine, and the hideous pandemic of the bubonic plague. With a superb command of ancient literatures and historical records, Keys makes hitherto unrecognized connections between the "wasteland" that overspread the British countryside and the fall of the great pyramid-building Teotihuacan civilization in Mexico, between a little-known "Jewish empire" in Eastern Europe and the rise of the Japanese nation-state, between storms in France and pestilence in Ireland. In the book's final chapters, Keys delves into the mystery at the heart of this global catastrophe: Why did it happen? The answer, at once surprising and definitive, holds chilling implications for our own precarious geopolitical future. Wide-ranging in its scholarship, written with flair and passion, filled with original insights, Catastrophe is a superb synthesis of history, science, and cultural interpretation.
Author: Alan Weisman
Publisher: Macmillan
ISBN: 9780312427900
Category : Nature
Languages : en
Pages : 436
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Book Description
A penetrating take on how our planet would respond without the relentless pressure of the human presence
Author: Yehezkel Dror
Publisher: Taylor & Francis
ISBN: 1000049922
Category : Social Science
Languages : en
Pages : 198
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Book Description
Humanity must steer its evolution. As human knowledge moves a step ahead of Darwin’s theories, this book presents the emergence of human-made meta-evolution shaping our alternative futures. This novel process poses fateful challenges to humanity, which require regulation of emerging science and technology which may endanger the future of our species. However, to do so successfully, a novel ‘humanity-craft’ has to be developed; main ideologies and institutions need redesign; national sovereignty has to be limited; a decisive global regime becomes essential; some revaluation of widely accepted norms becomes essential; and a novel type of political leader, based on merit in addition to public support, is urgently needed. Taking into account the strength of nationalism and vested interests, it may well be that only catastrophes will teach humanity to metamorphose into a novel epoch without too high transition costs. But initial steps, such as United Nation reforms, are urgent in order to contain calamities and may soon become feasible. Being both interdisciplinary and based on personal experience of the author, this book adds up to a novel paradigm on steering human evolution. It will be of great interest to scholars and researchers of modern history, evolution sciences, future studies, political science, philosophy of action, and science and technology. It will also be of wide appeal to the general reader anxious about the future of life on Earth. Comments on the Corona pandemic add to the book’s concrete significance.
Author: John Theilmann
Publisher: Routledge
ISBN: 1000544613
Category : History
Languages : en
Pages : 333
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Book Description
Disease and Society in Premodern England examines the impact of infectious disease in England from the everyday to pandemics in the period c. 500–c. 1600, with the major focus from the eleventh century onward. Theilmann blends historical research, using a variety of primary sources, with an understanding of disease drawn from current scientific literature to enable a better understanding of how diseases affected society and why they were so difficult to combat in the premodern world. The volume provides a perspective on how society and medicine reacted to "new" diseases, something that remains an issue in the twenty-first century. The "new" diseases of the Late Middle Ages, such as plague, syphilis, and the English Sweat, are viewed as helping to lead to a change in how people viewed disease causation and treatment. In addition to the biology of disease and its relationship with environmental factors, the social, economic, political, religious, and artistic impacts of various diseases are also explored. With discussions on a variety of diseases including leprosy, tuberculosis, malaria, measles, typhus, influenza, and smallpox, this volume is an essential resource for all students and scholars interested in the history of medicine and disease in premodern England.
Author: Arturo Hermann
Publisher: Routledge
ISBN: 1000199495
Category : Business & Economics
Languages : en
Pages : 308
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Book Description
Heterodox economics can provide a more complete and robust explanation of economic realities than orthodox (or mainstream) economics. Contemporary Issues in Heterodox Economics: Implications for Theory and Policy Action argues that this greater explanatory power gives heterodox economics the ability to illuminate appropriate policy for the major crises of our time, as well as proffer the basis for a more rounded, pluralist approach to economic theory. The chapters in this wide-ranging volume address some of the key issues facing the global economy, including the growing disparity of income/wealth between persons and economic areas, environmental degradation, issues associated with employment, and the regularity of economic/financial crises. The authors examine potential policy responses such as modern monetary theory, models of public ownership, and the need to move beyond standard concepts of growth. They also explore the deficiencies of orthodox economics, and contend that a more pluralist approach to economics is required in the public sphere, in academia, and in the classroom in order to help face the challenges of the twenty-first century. This book is invaluable reading for students and scholars across the social sciences who are interested in alternatives to mainstream economic thinking.
Author:
Publisher:
ISBN:
Category : Conservation of natural resources
Languages : en
Pages : 912
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Book Description
Author:
Publisher:
ISBN:
Category : Conservation of natural resources
Languages : en
Pages : 286
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