"In this comprehensive and engaging tour of environmental science, world-leading authorities Charles Langmuir and Wally Broecker provide the residents of the only habitable planet we know with the essential knowledge of how we got here and where we might be going."--Richard Alley, Pennsylvania State University

"As NASA continues to assess the habitability of our planetary neighbor, Mars, this insightful and approachable book is a timely reminder of how important it is to understand the habitability of our own Earth. Comprehensive and up-to-date, it exposes how ideas, imperfect understanding, and controversies drive scientific knowledge forward."--Roger Everett Summons, Massachusetts Institute of Technology

"This is a magnificent book, a successful and very worthwhile revision of its legendary and coveted first edition. The new edition offers more than a minor dusting off of the material. There are some completely new chapters and the authors have also done a good job of introducing newer discoveries. This book is more timely than ever, and I greet this revision with uncontained enthusiasm."--Raymond T. Pierrehumbert, University of Chicago

"This book is exceptionally well written and easy to read. The authors have taken a huge and complex topic and simplified it, removed the jargon, used analogies common to everyday experience, and as a result made a book that should be accessible and enjoyable to readers with little background in science."--Becky Alexander, University of Washington