Mitochondria are tiny structures located inside our cells that carry out the essential task of producing energy for the cell. They are found in all complex living things, and in that sense, they are fundamental for driving complex life on the planet. But there is much more to them than that. Mitochondria have their own DNA, with their own small collection of genes, separate from those in the cell nucleus. It is thought that they were once bacteria living independent lives. Their enslavement within the larger cell was a turning point in the evolution of life, enabling the development of complex organisms and, closely related, the origin of two sexes. Unlike the DNA in the nucleus, mitochondrial DNA is passed down exclusively (or almost exclusively) via the female line. That's why it has been used by some researchers to trace human ancestry daughter-to-mother, to 'Mitochondrial Eve'. Mitochondria give us important information about our evolutionary history. And that's not all. Mitochondrial genes mutate much faster than those in the nucleus because of the free radicals produced in their energy-generating role. This high mutation rate lies behind our ageing and certain congenital diseases. The latest research suggests that mitochondria play a key role in degenerative diseases such as cancer, through their involvement in precipitating cell suicide. Mitochondria, then, are pivotal in power, sex, and suicide. In this fascinating and thought-provoking book, Nick Lane brings together the latest research findings in this exciting field to show how our growing understanding of mitochondria is shedding light on how complex life evolved, why sex arose (why don't we just bud?), and why we age and die. This understanding is of fundamental importance, both in understanding how we and all other complex life came to be, but also in order to be able to control our own illnesses, and delay our degeneration and death. 'An extraordinary account of groundbreaking modern science... The book abounds with interesting and important ideas.' Mark Ridley, Department of Zoology, University of Oxford

IntroductionMitochondria: Clandestine Rulers of the World Part 1Hopeful Monster: The Origin of the Eukaryotic Cell 1. The Deepest Evolutionary Chasm 2. Quest for a Progenitor 3. The Hydrogen Hypothesis Part 2The Vital Force: Proton Power and the Origin of Life 4. The Meaning of Respiration 5. Proton Power 6. The Origin of Life Part 3Insider Deal: The Foundations of Complexity 7. Why Bacteria are Simple 8. Why Mitochondria Make Complexity Possible Part 4Power Laws: Size and the Ramp of Ascending Complexity 9. The Power Laws of Biology 10. The Warm-Blooded Revolution Part 5Murder or Suicide: The Troubled Birth of the Individual 11. Conflict in the Body 12. Foundations of the Individual Part 6Battle of the Sexes: Human Pre-History and the Nature of Gender 13. The Asymmetry of Sex 14. What Human Prehistory Says About the Sexes 15. Why There Are Two Sexes Part 7Clock of Life: Why Mitochondria Kill us in the End 16. The Mitochondrial Theory of Ageing 17. Demise of the Self-Correcting Machine 18. A Cure for Old Age? Epilogue Glossary Further Reading

Nick Lane , Honorary Reader, University College London

`Review from previous edition The books was written for anyone interested in some of the most profound questions of twenty-first century science. The central proposals of 'Power, Sex, Suicide' are clearly and forcefully propounded... This is a new take on why we are here. Do, please, read this book.' John F. Allen, Nature |d 27/10/2005