On Gaia: A Critical Investigation of the Relationship between Life and Earth

On Gaia: A Critical Investigation of the Relationship between Life and Earth

by Toby Tyrrell

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Overview

On Gaia: A Critical Investigation of the Relationship between Life and Earth by Toby Tyrrell

One of the enduring questions about our planet is how it has remained continuously habitable over vast stretches of geological time despite the fact that its atmosphere and climate are potentially unstable. James Lovelock's Gaia hypothesis posits that life itself has intervened in the regulation of the planetary environment in order to keep it stable and favorable for life. First proposed in the 1970s, Lovelock's hypothesis remains highly controversial and continues to provoke fierce debate. On Gaia undertakes the first in-depth investigation of the arguments put forward by Lovelock and others--and concludes that the evidence doesn't stack up in support of Gaia.

Toby Tyrrell draws on the latest findings in fields as diverse as climate science, oceanography, atmospheric science, geology, ecology, and evolutionary biology. He takes readers to obscure corners of the natural world, from southern Africa where ancient rocks reveal that icebergs were once present near the equator, to mimics of cleaner fish on Indonesian reefs, to blind fish deep in Mexican caves. Tyrrell weaves these and many other intriguing observations into a comprehensive analysis of the major assertions and lines of argument underpinning Gaia, and finds that it is not a credible picture of how life and Earth interact.

On Gaia reflects on the scientific evidence indicating that life and environment mutually affect each other, and proposes that feedbacks on Earth do not provide robust protection against the environment becoming uninhabitable--or against poor stewardship by us.

Product Details

ISBN-13: 9781400847914
Publisher: Princeton University Press
Publication date: 07/21/2013
Sold by: Barnes & Noble
Format: NOOK Book
Pages: 320
File size: 8 MB

About the Author

Toby Tyrrell is professor of Earth system science at the National Oceanography Centre Southampton (University of Southampton).

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