Preface 1 1. Environmental Thrivability, the Ecosystem and Mass Extinctions 5 2. Climate Change and Human Dependency on Fossil Fuels 28 3. Overpopulation and the Five Horrorists 69 4. Humans Will Be the Cause of the Sixth Mass Extinction 105 5. Nature and Human Skepticism Will Be the Cause of the Sixth Mass Extinction 139 6. Environmental Ethics and Thrivability 170 7. Helping the Environment Thrive 187 8. Happiness Is a Thriving Environment 220 9. We Can Change, but Will We Change? 247 10. Educating Thrivability 267 Bibliography 277 Index 298