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Mysteries of terra firma - James Powell

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Mysteries of terra firma - the age and evolution of the Earth
James Powell
Free Press
UK Publication Date

Everyone knows what geology is, but few people realise that almost everything we know about the planet Earth is barely a hundred years old. Here, James Powell unearths a wholly new perspective on the history, and human impact, of an oft underestimated science.
Beginning the the 'revolution of time', Powell reveals how we came to know how long the earth has existed and helps readers begin to fathom an astounding fact: if all of the 4.5 billion years of geologic time were compressed into 24 hours, Homo Sapiens would have arrived only in the last second. Next, the 'revolution of drift' the discovery of plate tectonics, explained how the ground we walk on came to be and how it will change in the future. Lastly, the 'revolution of chance' followed from the recognition that the earth, indeed the entire solar system, has been bombarded from the beginning by innumerable meteorites, some of them as large as moons. And if the tape were layed again, the history of the solar system would unfold differently: it might never again provide for conditions under which humankind could evolve. This revolution transformed our understanding of how lucky we are to be here at all.

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James Powell is Director and President of the Los Angeles County Museum of Natural History. He taught geology for twenty years at Oberlin College, where he also served as Acting President. The author of NIGHT COMES TO THE CRETACEOUS, he lives in Los Angeles.

Keyword Index
Geological time.|Plate tectonics.|Catastrophes (Geology)
Country of Publication
New York (State)
Number of Pages

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