Hugo Meijer is Research Fellow at CNRS Research Fellow and the Deputy Director of the Centre for International Studies (CERI) at Sciences Po, Paris. He is also the Founder and Honorary Director of the European Initiative for Security Studies, the largest and most diverse network of security studies scholars in Europe, as well as a senior fellow at the Centre for Security, Diplomacy and Strategy, Brussels, and an honorary researcher at the Centre for War and Diplomacy, Lancaster University.

'Hugo Meijer's landmark natural history of humanity's tendencies for war and peace is far and away the richest and most complete analysis ever done. His balanced and invigorating analysis of this vital topic will be the go-to guide for decades.' Richard Wrangham, Author of The Goodness Paradox and Professor Emeritus of Biological Anthropology, Harvard University

• Acknowledgements; Introduction: the quest for the origins of war and peace; 1. Nature and nurture: how biology, culture and climate shape war and peace; 2. Across the animal kingdom: why and how to compare species; 3. Chimpanzees and bonobos: conflict and cooperation in the wild; 4. Nomads of war and peace I: the archaeology of hunter-gatherers; 5. Nomads of war and peace II: the ethnography of hunter-gatherers; 6. The last common ancestor and beyond: ancestral traits and hominin innovations; 7. Janus-faced: unravelling the co-evolution of war and peace; 8. Feedback loops: the effects of climate change and language evolution on war and peace; Conclusion: war and peace from the origins to civilisation; Appendix: intergroup lethal conflict and group hunting across species; Index.

Hugo Meijer is Research Fellow at CNRS Research Fellow and the Deputy Director of the Centre for International Studies (CERI) at Sciences Po, Paris. He is also the Founder and Honorary Director of the European Initiative for Security Studies, the largest and most diverse network of security studies scholars in Europe, as well as a senior fellow at the Centre for Security, Diplomacy and Strategy, Brussels, and an honorary researcher at the Centre for War and Diplomacy, Lancaster University.

'Hugo Meijer's landmark natural history of humanity's tendencies for war and peace is far and away the richest and most complete analysis ever done. His balanced and invigorating analysis of this vital topic will be the go-to guide for decades.' Richard Wrangham, Author of The Goodness Paradox and Professor Emeritus of Biological Anthropology, Harvard University

• Acknowledgements; Introduction: the quest for the origins of war and peace; 1. Nature and nurture: how biology, culture and climate shape war and peace; 2. Across the animal kingdom: why and how to compare species; 3. Chimpanzees and bonobos: conflict and cooperation in the wild; 4. Nomads of war and peace I: the archaeology of hunter-gatherers; 5. Nomads of war and peace II: the ethnography of hunter-gatherers; 6. The last common ancestor and beyond: ancestral traits and hominin innovations; 7. Janus-faced: unravelling the co-evolution of war and peace; 8. Feedback loops: the effects of climate change and language evolution on war and peace; Conclusion: war and peace from the origins to civilisation; Appendix: intergroup lethal conflict and group hunting across species; Index.

Hugo Meijer is Research Fellow at CNRS Research Fellow and the Deputy Director of the Centre for International Studies (CERI) at Sciences Po, Paris. He is also the Founder and Honorary Director of the European Initiative for Security Studies, the largest and most diverse network of security studies scholars in Europe, as well as a senior fellow at the Centre for Security, Diplomacy and Strategy, Brussels, and an honorary researcher at the Centre for War and Diplomacy, Lancaster University.

'Hugo Meijer's landmark natural history of humanity's tendencies for war and peace is far and away the richest and most complete analysis ever done. His balanced and invigorating analysis of this vital topic will be the go-to guide for decades.' Richard Wrangham, Author of The Goodness Paradox and Professor Emeritus of Biological Anthropology, Harvard University

• Acknowledgements; Introduction: the quest for the origins of war and peace; 1. Nature and nurture: how biology, culture and climate shape war and peace; 2. Across the animal kingdom: why and how to compare species; 3. Chimpanzees and bonobos: conflict and cooperation in the wild; 4. Nomads of war and peace I: the archaeology of hunter-gatherers; 5. Nomads of war and peace II: the ethnography of hunter-gatherers; 6. The last common ancestor and beyond: ancestral traits and hominin innovations; 7. Janus-faced: unravelling the co-evolution of war and peace; 8. Feedback loops: the effects of climate change and language evolution on war and peace; Conclusion: war and peace from the origins to civilisation; Appendix: intergroup lethal conflict and group hunting across species; Index.