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Author: Dennis A. Henigan
Publisher: Potomac Books, Inc.
ISBN: 1597976296
Category : Law
Languages : en
Pages : 318
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Book Description
Systematically refutes the bumper-sticker logic of the gun lobby.
Author: Dennis A. Henigan
Publisher: Potomac Books, Inc.
ISBN: 1597976296
Category : Law
Languages : en
Pages : 318
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Book Description
Systematically refutes the bumper-sticker logic of the gun lobby.
Author: Ken Hubbs
Publisher:
ISBN:
Category : Electronic government information
Languages : en
Pages : 20
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Book Description
Author: Gerrit L. Verschuur
Publisher: Oxford University Press
ISBN: 019028370X
Category : Science
Languages : en
Pages : 256
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Book Description
Most scientists now agree that some sixty-five million years ago, an immense comet slammed into the Yucatan, detonating a blast twenty million times more powerful than the largest hydrogen bomb, punching a hole ten miles deep in the earth. Trillions of tons of rock were vaporized and launched into the atmosphere. For a thousand miles in all directions, vegetation burst into flames. There were tremendous blast waves, searing winds, showers of molten matter from the sky, earthquakes, and a terrible darkness that cut out sunlight for a year, enveloping the planet in freezing cold. Thousands of species of plants and animals were obliterated, including the dinosaurs, some of which may have become extinct in a matter of hours. In Impact, Gerrit L. Verschuur offers an eye-opening look at such catastrophic collisions with our planet. Perhaps more important, he paints an unsettling portrait of the possibility of new collisions with earth, exploring potential threats to our planet and describing what scientists are doing right now to prepare for this awful possibility. Every day something from space hits our planet, Verschuur reveals. In fact, about 10,000 tons of space debris fall to earth every year, mostly in meteoric form. The author recounts spectacular recent sightings, such as over Allende, Mexico, in 1969, when a fireball showered the region with four tons of fragments, and the twenty-six pound meteor that went through the trunk of a red Chevy Malibu in Peekskill, New York, in 1992 (the meteor was subsequently sold for $69,000 and the car itself fetched $10,000). But meteors are not the greatest threat to life on earth, the author points out. The major threats are asteroids and comets. The reader discovers that astronomers have located some 350 NEAs ("Near Earth Asteroids"), objects whose orbits cross the orbit of the earth, the largest of which are 1627 Ivar (6 kilometers wide) and 1580 Betula (8 kilometers). Indeed, we learn that in 1989, a bus-sized asteroid called Asclepius missed our planet by 650,000 kilometers (a mere six hours), and that in 1994 a sixty-foot object passed within 180,000 kilometers, half the distance to the moon. Comets, of course, are even more deadly. Verschuur provides a gripping description of the small comet that exploded in the atmosphere above the Tunguska River valley in Siberia, in 1908, in a blinding flash visible for several thousand miles (every tree within sixty miles of ground zero was flattened). He discusses Comet Swift-Tuttle--"the most dangerous object in the solar system"--a comet far larger than the one that killed off the dinosaurs, due to pass through earth's orbit in the year 2126. And he recounts the collision of Comet Shoemaker-Levy 9 with Jupiter in 1994, as some twenty cometary fragments struck the giant planet over the course of several days, casting titanic plumes out into space (when Fragment G hit, it outshone the planet on the infrared band, and left a dark area at the impact site larger than the Great Red Spot). In addition, the author describes the efforts of Spacewatch and other groups to locate NEAs, and evaluates the idea that comet and asteroid impacts have been an underrated factor in the evolution of life on earth. Astronomer Herbert Howe observed in 1897: "While there are not definite data to reason from, it is believed that an encounter with the nucleus of one of the largest comets is not to be desired." As Verschuur shows in Impact, we now have substantial data with which to support Howe's tongue-in-cheek remark. Whether discussing monumental tsunamis or the innumerable comets in the Solar System, this book will enthrall anyone curious about outer space, remarkable natural phenomenon, or the future of the planet earth.
Author: Austin Wyatt
Publisher: Emerging Technologies, Ethics and International Affairs
ISBN: 9781032001555
Category : Autonomous weapons systems
Languages : en
Pages : 0
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Book Description
Challenging the focus on great powers in the international debate, this book explores how rising middle power states are engaging with emerging major military innovations and analyses how this will affect the stability and security of the Indo Pacific. Presenting a data-based analysis of how middle power actors in the Indo-Pacific are responding to the emergence of military Artificial Intelligence and Killer Robots, the book asserts that continuing to exclude non-great power actors from our thinking in this field enables the dangerous diffusion of Lethal Autonomous Weapon Systems (LAWS) to smaller states and terrorist groups, and demonstrates the disruptive effects of these military innovations on the balance of power in the Indo-Pacific. Offering a detailed analysis of the resource capacities of China, United States, Singapore and Indonesia, it shows how major military innovation acts as a circuit breaker between competitor states disrupting the conventional superiority of the dominant hegemonic state and giving a successful adopter a distinct advantage over their opponent. This book will appeal to researchers, end-users in the military and law enforcement communities, and policymakers. It will also be a valuable resource for researchers interested in strategic stability for the broader Asia-Pacific and the role of middle power states in hegemonic power transition and conflict.
Author: R.T. Wyant
Publisher: CRC Press
ISBN: 1466563052
Category : Computers
Languages : en
Pages : 329
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Book Description
Force used to quell out-of-control demonstrations or detain unruly individuals can result in litigation and bad press for law enforcement agencies. Injury or loss of life can best be avoided if agencies have accurate knowledge and proper training in less lethal options. Risk Management of Less Lethal Options: Evaluation, Deployment, Aftermath, and
Author: John S. Lewis
Publisher: Academic Press
ISBN: 9780124467606
Category : Computers
Languages : en
Pages : 224
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Book Description
Disk contains: HAZARDS version 5.5, designed to predict asteroid or comet impacts with the Earth.
Author: Carmel E Mothersill
Publisher: Springer
ISBN: 9400719396
Category : Technology & Engineering
Languages : en
Pages : 387
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Book Description
This volume – like the NATO Advanced Research Workshop on which it is based – addresses the fundamental science that contributes to our understanding of the potential risks from ecological terrorism, i.e. dirty bombs, atomic explosions, intentional release of radionuclides into water or air. Both effects on human health (DNA and systemic effects) and on ecosystems are detailed, with particular focus on environmentally relevant low-dose ranges. The state-of-the-art contributions to the book are authored by leading experts; they tackle the relevant questions from the perspectives of radiation genetics, radiobiology, radioecology, radiation epidemiology and risk assessment.
Author: United States. Congress. House. Committee on Education and Labor. Subcommittee on Labor Standards
Publisher:
ISBN:
Category : Automobile industry and trade
Languages : en
Pages : 148
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Book Description
Author: R C Sobti
Publisher: Taylor & Francis
ISBN: 1000775607
Category : Medical
Languages : en
Pages : 325
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Book Description
This book explores the unparalleled adversities and strain that the COVID-19 pandemic caused on the social and economic lives of people. The book allows readers a glimpse into the experiences of death of near and dears, loss of livelihood, psychological trauma, restrictions on movement and social life, shifts in international relations, and effects on big and small industries caused by the pandvnemic. It focusses on the major shifts caused within communities and highlights how politics, power dynamics, and socio-cultural systems have been reset and recovered during recent times. The volume also offers suggestions to offset economic hardships the pandemic has caused especially to the poor and marginalized as well as policy changes to help governments and communities to build more resilient economic and health infrastructure and support systems. With interdisciplinary contributions, this book is an essential read for students and researchers of public health, social sciences, health economics, healthcare management, development studies, public policy, and South Asian studies.
Author:
Publisher: DIANE Publishing
ISBN: 1437984436
Category :
Languages : en
Pages : 70
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Book Description
