Why we do it: rethinking sex and the selfish gene

The duality of life

Obsessed with genes

Chickens and eggs : the two sides of life

The natural economy

The consequences of baby making

Economics + babies + time = evolution

Clones, colonies, and social life

Human singularities

Naught so queere as folke : the strange biology of modern humans

The human triangle

Sex decoupled

Up close and personal : sex, power, money, and babies

Sex, economics, and babies in social systems

A moral to the story.