T REX AND THE CRATER OF DOOM

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T Rex And The Crater Of Doom

Author : Walter Alvarez
ISBN : 0691131031
Genre : Science
File Size : 88.44 MB
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Sixty-five million years ago, a comet or asteroid larger than Mount Everest slammed into the Earth, inducing an explosion equivalent to the detonation of a hundred million hydrogen bombs. Vaporized detritus blasted through the atmosphere upon impact, falling back to Earth around the globe. Disastrous environmental consequences ensued: a giant tsunami, continent-scale wildfires, darkness, and cold, followed by sweltering greenhouse heat. When conditions returned to normal, half the plant and animal genera on Earth had perished. This horrific chain of events is now widely accepted as the solution to a great scientific mystery: what caused the extinction of the dinosaurs? Walter Alvarez, one of the Berkeley scientists who discovered evidence of the impact, tells the story behind the development of the initially controversial theory. It is a saga of high adventure in remote locations, of arduous data collection and intellectual struggle, of long periods of frustration ended by sudden breakthroughs, of friendships made and lost, and of the exhilaration of discovery that forever altered our understanding of Earth’s geological history.
Category: Science

Asteroids Pb

Author : PEEBLES CURTIS
ISBN : 9781560989820
Genre : Science
File Size : 83.23 MB
Format : PDF
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Asteroids suggest images of a catastrophic impact with Earth, triggering infernos, tidal waves, famine, and death — but these scenarios have obscured the larger story of how asteroids have been discovered and studied. During the past two centuries, the quest for knowledge about asteroids has involved eminent scientists and amateur astronomers, patient research and sudden intuition, advanced technology and the simplest of telescopes, newspaper headlines and Cold War secrets. Showing how asteroid research is increasingly collaborative, Peebles's Asteroids provides insights into the evolution of scientific ideas and the ebb and flow of scientific debate.
Category: Science

Perilous Planet Earth

Author : Trevor Palmer
ISBN : 0521819288
Genre : Science
File Size : 40.81 MB
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A readable account of the history of natural disasters throughout history.
Category: Science

Falling Stars

Author : Mike D. Reynolds
ISBN : 9780811742214
Genre : Science
File Size : 70.72 MB
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Month-by-month information on meteor showers and how to make the most of watching them. Advice on starting and building a meteorite collection plus the scientific explanation of what meteors are and where they come from. Includes new information about recent space exploration and studies of meteors.
Category: Science

The Handy Dinosaur Answer Book

Author : Patricia Barnes-Svarney
ISBN : 9781578593262
Genre : Nature
File Size : 59.39 MB
Format : PDF
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Featuring more than 600 questions about dinosaurs—such as What dinosaurs are thought to have evolved into birds? Did dinosaurs travel in herds? and Where and what is the Dinosaur Freeway?—this fun-filled fact-book provides a wealth of information on the lives and habits of these astonishing creatures. From the Tyrannosaurus rex to the Stegosaurus, the guide profiles numerous species, chronicling their time on earth and exploring their roles in archaeological expeditions and museums today. Delightful and intriguing, this comprehensive record includes the debates still surrounding the origins and fate of these creatures that dominated the earth for millions of years but seemed to disappear in the blink of an eye.
Category: Nature

Four Revolutions In The Earth Sciences

Author : James Lawrence Powell
ISBN : 9780231538459
Genre : Science
File Size : 25.1 MB
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Over the course of the twentieth century, scientists came to accept four counterintuitive yet fundamental facts about the Earth: deep time, continental drift, meteorite impact, and global warming. When first suggested, each proposition violated scientific orthodoxy and was quickly denounced as scientific—and sometimes religious—heresy. Nevertheless, after decades of rejection, scientists came to accept each theory. The stories behind these four discoveries reflect more than the fascinating push and pull of scientific work. They reveal the provocative nature of science and how it raises profound and sometimes uncomfortable truths as it advances. For example, counter to common sense, the Earth and the solar system are older than all of human existence; the interactions among the moving plates and the continents they carry account for nearly all of the Earth's surface features; and nearly every important feature of our solar system results from the chance collision of objects in space. Most surprising of all, we humans have altered the climate of an entire planet and now threaten the future of civilization. This absorbing scientific history is the only book to describe the evolution of these four ideas from heresy to truth, showing how science works in practice and how it inevitably corrects the mistakes of its practitioners. Scientists can be wrong, but they do not stay wrong. In the process, astonishing ideas are born, tested, and over time take root.
Category: Science

Science In The Contemporary World

Author : Eric Gottfrid Swedin
ISBN : 9781851095247
Genre : Reference
File Size : 20.23 MB
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This work is a unique introductory A–Z resource detailing the scientific achievements of the contemporary world and analyzing the key scientific trends, discoveries, and personalities of the modern age. * Over 200 A–Z entries covering topics ranging from plate tectonics to the first Moon landings * More than 40 stunning photographs providing a unique pictorial chronicle of the achievements of modern science
Category: Reference

The Mountains Of Saint Francis Discovering The Geologic Events That Shaped Our Earth

Author : Walter Alvarez
ISBN : 039307093X
Genre : Science
File Size : 46.27 MB
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The major new work by the best-selling author of T. Rex and the Crater of Doom--a fascinating history. Walter Alvarez and his team made one of the most astonishing scientific discoveries of the twentieth century--that an asteroid smashed into the Earth 65 million years ago, exterminating the dinosaurs. Alvarez had the first glimmer of that amazing insight when he noticed something odd in a rock outcrop in central Italy. Alvarez now returns to that rich terrain, this time to take the reader on an distant past. We encounter the volcanoes that formed the Seven Hills of Rome; the majestic limestone Apennine mountains that started to develop millions of years ago under water; the evidence that the Mediterranean Sea completely evaporated to a sunken desert, perhaps several times; and the proof that continental plates once overran one another to form telling, all major geologic episodes are as dramatic as the great impact that killed the dinosaurs, even when they happen over eons and without huge creatures to witness them.
Category: Science

Silk Parachute

Author : John McPhee
ISBN : 9781429985819
Genre : Literary Collections
File Size : 47.80 MB
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A WONDROUS NEW BOOK OF MCPHEE'S PROSE PIECES—IN MANY ASPECTS HIS MOST PERSONAL IN FOUR DECADES The brief, brilliant essay "Silk Parachute," which first appeared in The New Yorker a decade ago, has become John McPhee's most anthologized piece of writing. In the nine other pieces here— highly varied in length and theme—McPhee ranges with his characteristic humor and intensity through lacrosse, long-exposure view-camera photography, the weird foods he has sometimes been served in the course of his reportorial travels, a U.S. Open golf championship, and a season in Europe "on the chalk" from the downs and sea cliffs of England to the Maas valley in the Netherlands and the champagne country of northern France. Some of the pieces are wholly personal. In luminous recollections of his early years, for example, he goes on outings with his mother, deliberately overturns canoes in a learning process at a summer camp, and germinates a future book while riding on a jump seat to away games as a basketball player. But each piece—on whatever theme—contains somewhere a personal aspect in which McPhee suggests why he was attracted to write about the subject, and each opens like a silk parachute, lofted skyward and suddenly blossoming with color and form.
Category: Literary Collections