Abstract
Evolution of social behaviors is one of the most fascinating and active fields of evolutionary biology. During the past half century, social evolution theory developed into a mature field with powerful tools to understand the dynamics of social traits such as cooperation under a wide range of conditions. But when these conditions themselves evolve remains a largely open question, which I argue represents the next step in the development of social evolution theory. In this talk, I will present a few examples of such co-evolutionary dynamics leading to unexpected results. In particular I will talk about two models where social network structure co-evolves with (i) a social trait such as cooperation, and (ii) with cumulative culture, and a third model where the strategies individuals play in a game co-evolves with the resource environment that determines with game is being played.