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The Goldilocks Planet: The Four Billion Year Story of Earth's Climateby Jan Zalasiewicz
Synopses & Reviews
Climate change is a major topic of concern today and will be so for the foreseeable future, as predicted changes in global temperatures, rainfall, and sea level continue to take place. But as Jan Zalasiewicz and Mark Williams reveal in The Goldilocks Planet, the climatic changes we are experiencing today hardly compare to the changes the Earth has seen over the last 4.5 billion years.
Indeed, the vast history that the authors relate here is dramatic and often abrupt--with massive changes in global and regional climate, from bitterly cold to sweltering hot, from arid to humid. They introduce us to the Cryogenian period, the days of Snowball Earth seven hundred million years ago, when ice spread to cover the world, then melted abruptly amid such dramatic climatic turbulence that hurricanes raged across the Earth. We read about the Carboniferous, with tropical jungles at the equator (where Pennsylvania is now) and the Cretaceous Period, when the polar regions saw not ice but dense conifer forests of cypress and redwood, with gingkos and ferns. The authors also show how this history can be read from clues preserved in the Earth's strata. The evidence is abundant, though always incomplete--and often baffling, puzzling, infuriating, tantalizing, seemingly contradictory. Geologists, though, are becoming ever more ingenious at deciphering this evidence, and the story of the Earth's climate is now being reconstructed in ever-greater detail--maybe even providing us with clues to the future of contemporary climate change.
And through all of this, the authors conclude, the Earth has remained perfectly habitable--in stark contrast to its planetary neighbors. Not too hot, not too cold; not too dry, not too wet--"the Goldilocks planet."
About the Author
Jan Zalasiewicz is Senior Lecturer in Geology at Leicester University. He is the author of The Earth After Us and The Planet in a Pebble.
Mark Williams is Reader in Geology at Leicester University. Both are established researchers into palaeoclimates and climate change.
Table of Contents
1. Primordial climate
2. Snowball Earth
3. Between greenhouse and icehouse
4. The last long greenhouse
5. An ice age begins
6. Last gasp of a warm Earth
7. Into the icehouse
8. The glacial world
9. The last ten thousand years
10. The Anthropocene begins
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