In social dilemmas, cooperation among randomly interacting individuals is often difficult to achieve. The situation changes if interactions take place in a network where the network structure jointly evolves with the behavioral strategies of the interacting individuals. In particular, cooperation can be stabilized if individuals tend to cut interaction links when facing adverse neighborhoods.
Zhang C, Zhang J, Weissing FJ, Perc M, Xie G, et al. (2012) Different Reactions to Adverse Neighborhoods in Games of Cooperation. PLoS ONE 7(4): e35183. http://dx.doi.org/10.1371/journal.pone.0035183