Peter and Susannah talk with demographer Lyman Stone about falling birthrates and what humans need to thrive enough to have children.

They discuss Thomas Malthus and the origin of the European demographic transition, as well as the origin of overpopulation fears, and about how those fears misunderstand the nature of human ingenuity.

They cover the essential racism of so much “overpopulation” discourse, which even now is focused on “the wrong kind of people” having too many children. They discuss the issue of hard limits- surely there must be some point past which human population can’t grow, some actual environmental catastrophe? What then are we aiming for? How long should we plan for? Then they talk about whether the need for limits and the need for ambitious vision in human endeavor are in conflict with each other.

Then they discuss what it takes, spiritually and culturally, for a society, for individuals, to believe that the world they are in, the family they are in, is one worth preserving.