Title Page -- Copyright Page -- Table of Contents -- Preface -- Acknowledgments -- Chapter 1: An Introduction -- Part 1: Element -- Chapter 2: Shining a Light on Earth's Oldest Toxic Threat? -- Chapter 3: When Life Gives You Oxygen, Respire -- Chapter 4: Metal Planet -- Part 2: Plant and Animal -- Chapter 5: It Takes Two (or More) for the Cancer Tango -- Chapter 6: Chemical Warfare -- Chapter 7: Sensing Chemicals -- Chapter 8: Coordinated Defense -- Part 3: Human -- Chapter 9: Toxic Evolution -- Chapter 10: Toxic Overload? -- Appendix: Five Recent Additions to the Chemical Handbook of Life -- Notes -- Selected Bibliography -- Index.