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Snowball Earth por Gabrielle Walker
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Snowball Earth (original 2003; edição 2004)

por Gabrielle Walker

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1403149,082 (3.8)1
Publisher's description: Did the Earth once undergo a super ice age, one that froze the entire planet from the poles to the equator? In Snowball Earth, gifted writer Gabrielle Walker has crafted an intriguing global adventure story, following maverick scientist Paul Hoffman's quest to prove a theory so audacious and profound that it is shaking the world of earth sciences to its core. In lyrical prose that brings each remote and alluring locale vividly to life, Walker takes us on a thrilling natural history expedition to witness firsthand the supporting evidence Hoffman has pieced together. That evidence, he argues, shows that 700 million years ago the Earth did indeed freeze over completely, becoming a giant "snowball", in the worst climatic catastrophe in history. Even more startling is his assertion that, instead of ending life on Earth, this global deep freeze was the trigger for the Cambrian Explosion, the hitherto unexplained moment in geological time when a glorious profusion of complex life forms first emerged from the primordial ooze. In a story full of intellectual intrigue, we follow the irascible but brilliant Hoffman and a supporting cast of intrepid geologists as they scour the planet, uncovering clue after surprising clue. We travel to a primeval lagoon at Shark Bay in western Australia, where dolphins cavort with swimmers every morning at seven and "living rocks" sprout out of the water like broccoli heads; to the desolate and forbidding ice fields of a tiny Arctic archipelago seven hundred miles north of Norway; to the surprising fossil beds that decorate Newfoundland's foggy and windswept coastline; and on to the superheated salt pans of California's Death Valley. Through the contours of these rich and varied landscapes Walker teaches us to read the traces of geological time with expert eyes, and we marvel at the stunning feats of resilience and renewal our remarkable planet is capable of. Snowball Earth is science writing at its most gripping and enlightening.… (mais)
Membro:NoImagination
Título:Snowball Earth
Autores:Gabrielle Walker
Informação:Bloomsbury Publishing PLC (2004), Paperback, 288 pages
Colecções:A sua biblioteca
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Snowball Earth: The Story of the Great Global Catastrophe That Spawned Life as We Know It por Gabrielle Walker (2003)

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Rating of 2.5. An O.K. book about one of the really major topics in geology today.
Could have been a stronger book, if the editor and author had used well thought out and
drawn illustrations. ( )
  Steve_Walker | Sep 13, 2020 |
Another excellent science book by Walker ( )
  PDCRead | Apr 6, 2020 |
I had this book on my to-read shelf for years, after I read about another book by the same author. The other book is on my to-read shelf, too, but I am now not sure I want to start it - ever...

It's not that I hated the book but I just got bored with about a third way in. I am not a geologist and have no special interest in the details of how a theory was attempted, then disproved, then proved again over time - had hoped the story would be about the phenomenon of "snowball earth" rather than the personal life stories of the geologists involved in proving and disproving different theories in connection with snowball earth. Also the tone of the book grated on me - every story seemed to be told with overly dramatic effect - like a bad TV documentary. ( )
1 vote BrokenTune | Aug 21, 2016 |
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Publisher's description: Did the Earth once undergo a super ice age, one that froze the entire planet from the poles to the equator? In Snowball Earth, gifted writer Gabrielle Walker has crafted an intriguing global adventure story, following maverick scientist Paul Hoffman's quest to prove a theory so audacious and profound that it is shaking the world of earth sciences to its core. In lyrical prose that brings each remote and alluring locale vividly to life, Walker takes us on a thrilling natural history expedition to witness firsthand the supporting evidence Hoffman has pieced together. That evidence, he argues, shows that 700 million years ago the Earth did indeed freeze over completely, becoming a giant "snowball", in the worst climatic catastrophe in history. Even more startling is his assertion that, instead of ending life on Earth, this global deep freeze was the trigger for the Cambrian Explosion, the hitherto unexplained moment in geological time when a glorious profusion of complex life forms first emerged from the primordial ooze. In a story full of intellectual intrigue, we follow the irascible but brilliant Hoffman and a supporting cast of intrepid geologists as they scour the planet, uncovering clue after surprising clue. We travel to a primeval lagoon at Shark Bay in western Australia, where dolphins cavort with swimmers every morning at seven and "living rocks" sprout out of the water like broccoli heads; to the desolate and forbidding ice fields of a tiny Arctic archipelago seven hundred miles north of Norway; to the surprising fossil beds that decorate Newfoundland's foggy and windswept coastline; and on to the superheated salt pans of California's Death Valley. Through the contours of these rich and varied landscapes Walker teaches us to read the traces of geological time with expert eyes, and we marvel at the stunning feats of resilience and renewal our remarkable planet is capable of. Snowball Earth is science writing at its most gripping and enlightening.

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