- Hardcover: 288 pages
- Publisher: Bloomsbury Publishing PLC; First Edition edition (7 April 2003)
- Language English
- ISBN-10: 074756051X
- ISBN-13: 978-0747560517
- Product Dimensions: 22.6 x 15.6 x 3.4 cm
- Average Customer Review: 3.7 out of 5 stars See all reviews (10 customer reviews)
- Amazon Bestsellers Rank: 688,847 in Books (See Top 100 in Books)
Snowball Earth
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Product Description
Amazon.co.uk Review
The idea that the Earth has been completely frozen over by ice and snow might seem fanciful and deeply worrying, if true. Gabrielle Walker's Snowball Earth is the remarkable story of the theory, the evidence for it, the geologists who are behind it and those against it. The bad news is that it is highly likely to be true. As Gabrielle Walker expertly explains for the general reader, there have indeed been several such runaway glacial events. Polar ice caps, continental ice sheets and sea ice grew to such an extent that they all met in the tropics and our green and pleasant planet was whited out.
The good news is that it all happened a very long time ago, the last time around 650 million years ago and is highly unlikely to happen again, even in the distant future. Snowball Earth theory has been gathering strength over the last few decades and is one of the most remarkable discoveries in Earth science at the end of the last century. You might wonder why such major Earth encompassing and catastrophic events have gone unnoticed for so long. Well, it is a complicated and interesting story and Gabrielle Walker is well qualified to tell it as she has a science doctorate and has worked as an editor for Nature and New Scientist, so she has seen this idea grow over the years. More importantly, as she acknowledges has been a Snowball Earth groupie attending conferences, field trips, lectures and campsites around the world. Consequently, she has been at the coal face, seen the critical rocks which are now scattered around the world, thanks to an ongoing process known as plate tectonics which opens and closes oceans and shuffles the continents about. Walker has talked to the scientists involved about the evidence and the problems of their interpretation, so we hear directly from the mouths of the various horses. It's a fascinating story, well told and there are notes and further reading for those that want more details and a very useful index. --Douglas Palmer
Publishers Weekly, Janury 20th 2003
"Walker does a superb job ...Her prose, like her story, is likely to engage both scientists and general readers equally."
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Most Helpful Customer Reviews
28 of 28 people found the following review helpful:
3.0 out of 5 stars
A snowballs chance,
By
This review is from: Snowball Earth (Paperback)
I was really looking forward to this book, given Ms Walkers work on New Scientist and I was intrigued by the theory, but was yet to be convinced, so this I hoped would help me make my mind up.But I am sorry to say that I found the book disappointing making me wish for another book on the subject, written in a different way. My problem is that the book goes into huge detail on the personalities, academic arguments and even the athletic activities of Paul Hoffman. Fine, but I was interested in the theory and did not want a biography of the scientist concerned as I fail to see what relevance it had to the theory. Now that would have been OK, had the book contained photographs of the rock formations, diagrams of the strata and paleo tectonic maps for example. The book contained none and in an expensive hardback science book I find this a major omission. While given my lack of expertise I may not have been able to read too much from the pictures, I would have liked at least to have had the choice. Compare this to Michael Benton's masterly work on the Permian extinction and this book, while enjoyable simply is in a lesser class. That said I would certainly look out for Ms Walker's future books.
8 of 8 people found the following review helpful:
3.0 out of 5 stars
A Snow job or a revelation?,
By Stephen A. Haines (Ottawa, Ontario Canada) - See all my reviews (TOP 500 REVIEWER) (HALL OF FAME REVIEWER) (REAL NAME)
This review is from: Snowball Earth: The Story of the Global Catastrophe That Spawned Life as We Know it (Hardcover)
Gabrielle Walker's first book portrays the struggle of a renegade scientist to establish a theory of evolution's progress. Charles Lyell's established "uniformitarianism" in geology, followed by Charles Darwin's application of it in his theory of evolution by natural selection. The concept of gradual change in life as reflected in the fossil evidence is being challenged by some scientist. Paul Hoffman's research in Namibia indicated that Earth was subjected to an intense Ice Age prior to the Cambrian, severely interrupting life's progress. Walker introduces us to Hoffman and other major contestants in this game of reading the rocks. She presents him and the arguments with dynamic style, giving the book a certain panache.Even under Walker's admiring scrutiny, Hoffman doesn't appear as an endearing figure. Yet, the very characteristics some find irritating are the same drives that kept the theory of Snowball Earth alive. Walker shows how combative science can be, with contenders sniping and quarreling like feuding families. They all have fossils, climate mechanisms and glacial processes on show. Walker attempts to give them all a hearing, but the opponents make but cameo appearances. She gathered her evidence by extensive journeys - her travel budget must have been prodigious. Walker reveals their peccadilloes and their strengths. When you are done, you feel a sense of identity, even intimacy with them. Whether you are convinced of the thesis remains problematic. Walker's own sketchy knowledge forces a pause, wondering about the validity of her presentation. Her admission of being a "Snowball Earth groupie" erodes credibility. She offers many assertions as givens, such as the asteroid dinosaur extinction thesis. Theory popularity is good journalism, but sketchy science. Her journalist role leads her to overuse of buzzwords - "Slimeworld", the habit of bacteria to form mats - achieves fatiguing redundancy. The predominant question, which Walker addresses only superficially, examines what process life underwent under these conditions. There was life before the Cambrian - clearly multi-cellular. How complex was it, and how resistant to the environmental crisis evoked by the Snowball Earth hypothesis? Ediacaran life was shallow sea bottom or surface dwelling. An ice blanket a kilometre or more thick would have been devastating to this population. Walker and her "group" are unable to form a coherent thesis of how life achieved complexity after the Snowball's meltdown, only that it must have happened - otherwise "we wouldn't be here". A valid statement, but one needing further support for how it might have occurred. Walker's personalised account makes engaging reading, presenting a new idea needing more attention. While various modifications of the Snowball Earth notion have been offered, final judgment remains deferred. This is a good, but limited, overview of the debate and the participants. At some point, someone qualified will enlighten us further. [stephen a. haines - Ottawa, Canada]
4 of 4 people found the following review helpful:
4.0 out of 5 stars
Seriously ‘cool’...,
This review is from: Snowball Earth: The Story of the Global Catastrophe That Spawned Life as We Know it (Hardcover)
This is the story of a radical new scientific theory that has the potential to turn established geological thinking on its head should it continue to withstand the academic onslaught pitched against it. This is also the story of the committed, voracious minds that will not rest until all the evidence is pieced together and all the geographical jots are joined. Walker melds elements of travel literature, popular science and biography into an informative, entertaining whole. Though perhaps not writing as objectively as she could throughout, she still manages to weigh the fascinating arguments of what could have happened to our ball of rock billions of years ago.
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