Contents

Preface to the Paperback Edition x

Preface to the First Edition xiii

Introduction: The Astrobiology Revolution and the Rare Earth Hypothesis ... xvii

Dead Zones of the Universe xxix

Rare Earth Factors xxxi

1 Why Life Might Be Widespread in the Universe 1

2 Habitable Zones of the Universe 15

3 Building a Habitable Earth 35

4 Life's First Appearance on Earth 55

5 How to Build Animals 83

6 Snowball Earth 113

7 The Enigma of the Cambrian Explosion 125

8 Mass Extinctions and the Rare Earth Hypothesis .. 157

9 The Surprising Importance of Plate Tectonics 191

10 The Moon, Jupiter, and Life on Earth 221

11 Testing the Rare Earth Hypotheses 243

12 Assessing the Odds 257

13 Messengers from the Stars 277

References 289

Index 319

Was this article helpful?

0 0

Post a comment