Product Description

Global warming is contentious and difficult to measure, even among the majority of scientists who agree that it is taking place. Will temperatures rise by 2oC or 8oC over the next hundred years? Will sea levels rise by 2 or 30 feet? The only way that we can accurately answer questions like these is by looking into the distant past, for a comparison with the world long before the rise of mankind.
We may currently believe that atmospheric shifts, like global warming, result from our impact on the planet, but the earth's atmosphere has been dramatically shifting since its creation. This book reveals the crucial role that plants have played in determining atmospheric change - and hence the conditions on the planet we know today. Along the way a number of fascinating puzzles arise: Why did plants evolve leaves? When and how did forests once grow on Antarctica? How did prehistoric insects manage to grow so large? The answers show the extraordinary amount plants can tell us about the history of the planet -- something that has often been overlooked amongst the preoccuputations with dinosaur bones and animal fossils.
David Beerling's surprising conclusions are teased out from various lines of scientific enquiry, with evidence being brought to bear from fossil plants and animals, computer models of the atmosphere, and experimental studies. Intimately bound up with the narrative describing the dynamic evolution of climate and life through Earth's history, we find Victorian fossil hunters, intrepid polar explorers and pioneering chemists, alongside wallowing hippos, belching volcanoes, and restless landmasses.

Product Details

• Amazon Sales Rank: #383840 in Books
• Published on: 2007-04-05
• Original language: English
• Number of items: 1
• Binding: Hardcover
• 304 pages

Review

"It would be a useful addition to a biological library, or to one that serves researchers in atmospheric science."--E-STREAMS
"The Emerald Planet is beautifully written, fresh and provocative. Beerling is a good teacher, using imaginative analogies to explain complex material that might otherwise seem dry. His book will appeal to amateurs and professionals alike-everyone interested in how plants have changed and will continue to change out world."--Jennifer McElwain, American Scientist
"Throughout the book, Beerling uses evidence from the plant fossil record (mutant spores, tree stumps from the Artic and Antartic, growth rings) to reconstruct past climates and to help explain mass extinctions. Too often this evidence has been disregarded, but Beerling gives it its due, and then some."-- BioScience
"Summing up: Highly recommended."-- CHOICE
"Beerling introduces us to the scientists of the past and their contributions to today's hypotheses.His presentations successfully convey the incremental nature of science demonstrating that new hypotheses often emerge from the combination of observation and syntheses of pervious work."--BioScience
"The result is a book that is fascinating and exciting to read."--American Scientist
"This book reveals the crucial role that plants have played in determining atmospheric change - and hence the conditions on the planet we know today." -- American Meteorological Society
"An excellent reference for students, educators, and research students, this techincal book provides a summary of theories on the influence of plant life on earth and brings to attention the recent discoveries that lead to unraveling its mysteries." -- Current Books on Gardening and Botany

About the Author

David Beerling is Professor of Palaeoclimatology at the Department of Animal and Plant Sciences University of Sheffield. Before this he held a Royal Society University Research Fellowship, where his work on the evolution of life and the physical environment was recognized by the award of a prestigious Philip Leverhulme Prize in earth sciences (2001). He has published over 100 papers in international scientific journals and is co-author of Vegetation and the Global Carbon Cycle: Modelling the first 400 million years (CUP, 2001).

Customer Reviews

Arranging carts and horses
For many years, as fossil plants emerged from the rocks, it was believed that these records reflected changes in climate. Plants, it was assumed, had to adapt to variations in weather and other conditions. According to Beerling, plant life was instead the major prompter of climate change. The balance of atmospheric gases was determined by the micro-organisms floating in the seas. The ability to absorb carbon dioxide, coupled with the use of sunlight to convert that into nutrients gives plants the power to shift gas quantities. During the early days, plants exhaled oxygen. It was poison to most organisms, but those capable of using it began the drive leading to today's life. In this useful survey of all the forces forming today's world, Beerling traces how plants "changed Earth's history". Following his thesis requires the reader's close attention, since the organisation of the material is necessarily loose - not fixed chronology nor subject. The many topics to cover cannot be neatly niched.

To the author, the biggest mystery lies in the long delay between plants colonising the land and the formation of the first leaves. Leaf structure reflects how the plant is using energy. That, in turn, becomes a signal of how the atmosphere is composed at any given time. This knowledge was assembled over many years through the work of many researchers. Beerling traces the building of data resources and how the information was interpreted. Images of leaves and stems, analysis of the rock chemistry, field observations and laboratory experiments all contributed to the picture of plant evolution. Numerous surprises emerged, sometimes leading scholars to doubt the data and even their methodology. Looking at the life of plants down the ages is, as he puts it, looking "Through a glass darkly". Pervading his presentation is what the implications are for what is occurring in today's atmosphere - on which our life and those of our children, depends.

Beerling deems investigations into ancient atmospheres a form of "breathalyser", such as the police apply to suspected impaired drivers. In this case, however, it's not alcohol fumes that are measured, but carbon dioxide. Other gases are also sought, but they don't often leave sufficient clues. The information must be derived indirectly. Again, it's the plant's leaves that are used as the pointers to how ancient atmospheres fluctuated. Underlying the variations is the mighty force of plate tectonics. The shifting of land masses and changes in surface configuration leads plants to shift their survival strategies. Acting far more rapidly than creeping continents, the ability of plants to accelerate or impair rock weathering shifts the presence of gas quantities. Carbon dioxide quantities have varied markedly, leading to most of the world's history being warm times. Only recently - in geologic terms - has the planet experienced a cool era, which led to the "ice age" that scoured the Northern Hemisphere with massive glaciers.

As with so much in science, the revelation that plants drive climate instead of passively responding to it has produced at least as many questions as answers. There are anomalous circumstances that must be unravelled. The knowledge gained has led to the formation of "Earth system analysis" techniques using various forms of computer modelling. Many details, however, remain to be worked out. Atmostpheric studies are particularly impaired by lack of knowledge of cloud formation and distribution. Carbon itself, both as a greenhouse gas and as a component of plant growth, remains enigmatic. Beerling traces the selectivity of plants in choosing which carbon isotope will be utilised. That choice has impact on which plants will become dominant in a given area, which also has implications for the animal life living from them. There are no simple nor ready answers to what plants have meant in tracing life's development. Yet, as he emphasises frequently, these are questions that must be addressed further, and that, soon. Understanding our atmosphere is essential to our future. [stephen a. haines - Ottawa, Canada]

a good idea
It is a very good idea of David Beerling to start each chapter of 'The Emerald Planet' with a short and clear summary. It is immediately clear what the author is arguing in the chapter and what it is about. By browsing through the book and reading all the chapter summaries, one gets an excellent idea what the author is arguing. This is a very good service for the reader who does not have an unlimited amount of time and wants to access if the current book is the right one to invest time in. Above that, it is such a pleasant feature. Compare this book with Oliver Morton 'Eating the Sun' which is a similar subject, but lacks that kind of clarity, then I prefer to invest my time in David Beerling.

Relating Paleobotany to Global Warming
This was one of the best books I read this year. It is superbly written, and makes paleobotany come to life with vividly historical details such as how the Victorian obsession with specimen collection handily provided a data-mine for scientists who are trying to understand how CO2 levels interact with homeobox genes for stomata. It also combines a rich story of geological events with plant evolution and provides one of the best overviews of how CO2 levels affect climate. While it is largely devoid of climate alarmism, you will think about the effect of mass extinction of plant life on our climate long after you put the book down.