Ina Wunn studied Biology and Geology at Philipps-University of Marburg and received a doctorate in Palaeontology (Dr. rer. nat.) in 1985. After a three-year stay in Africa she returned to university to study Religious Studies and Philosophy and to do a doctoral degree in Religious Studies in 1999. In 2002, she received the postdoctoral lecturer qualification (venia legendi) in Religious Studies from University of Hanover and has subsequently been Professor of Religious Studies at the Universities of Bielefeld and, later,  Hanover. In her research Ina Wunn focuses on theory of science, especially scientific approaches in the humanities, as well as theories of the origin of religion and prehistoric religion.
Davina Grojnowski completed her doctoral degree in the field of Theology and Religious Studies at King's College London, UK. She holds an Undergraduate degree in Classics, also from King's, and a Master's degree in Jewish Studies from the University of Oxford. Her research interests lie in the religious literature of the Second Temple period, including the representation of the body in religious thought, and the origins of religion. She has taught at the University of Bielefeld, Germany, and King's College London, UK.

Chapter 1. Nothing makes sense except in the light of evolution... (State of research and critique of current evolutionary accounts in the Study of Religions).- Chapter 2. What is Evolution? (An analysis of biological evolution.).- Chapter 3. What does evolve? Humankind or Religion Itself? (That means: Is religion a by-product of our brain and is religion adaptive? Or are we in search for a theory of how religion itself evolves? These are very different questions!).- Chapter 4. The question of the evolving unit. (What is the equivalent of the "species").- Chapter 5. How do religions evolve? (The search for the driving forces behind religious evolution: variability and selection).- Chapter 6. The adaptation of a religion - what does it mean?.- Chapter 7. The "Natural environment" and the evolving religion (What is the environment to which an evolving religion has to adapt? - see our discussion in: Wunn & Grojnowski: "Ancestors, Territoriality, and Gods", Springer 2016).- Chapter 8. Inheritance among religions (What does the term "heredity" mean - as far as religions are concerned?).- Chapter 9. Religio-speciation.- Chapter 10. Hybridization (What happens when two religions influence each other and become one?).- Chapter 11. Ontogenetics and Epigenetics: Religions and the short-term adaptation to a changing environment.- Chapter 12. Phylogenetics or: a Tree of Life for religions.- Chapter 13. Systematics: How are the historical and recent religions related to each other?.- Chapter 14. The evolution of Judeo-Christian religion (an example. Also possible: The evolution of the religions of the Indian Subcontinent).