Dynamic models are useful ways to explore complex systems. For example:

Human and nature dynamics (HANDY): Modeling inequality and use of resources in the collapse or sustainability of societies S Motesharrei, J Rivas, E Kalnay Ecological Economics 101, 90--102

Modeling Sustainability: Population, Inequality, Consumption, and Bidirectional Coupling of the Earth and Human Systems S Motesharrei, J Rivas, E Kalnay, GR Asrar, AJ Busalacchi, RF Cahalan, ... National Science Review 3 (4), 470--494