Anthropologists now widely agree that Homo sapiens evolved with our especially large brains thanks to unusually supportive childcare arrangements. Whereas an ape mother must care for her infant all by herself, evolving humans developed complex systems of cooperative childcare, mothers choosing to live with their own mother and other relatives in order to share childcare tasks. In this workshop, we will explore how sexual relations during human evolution underwent a series of profound changes, with male energies increasingly harnessed to provision and assist mothers and their babies. When did the incest taboo come into force, and why? How does sex in human societies connect up with economics? This session will explore such basic questions as the ultimate nature of distinctively human kinship, family life, economics and sexual morality.