Traditionally, most ecological research has studied ecosystems separate from humans. Network approaches provide a potentially powerful quantitative framework for understanding the roles and impacts of humans as a part of ecosystems, in terms of their direct and indirect interactions with other species. This talk will discuss recent approaches to data compilation, analysis, and modeling of food webs and interaction networks that explicitly include humans, with an initial focus on non-industrial systems. Such research can provide a new lens for understanding aspects of the sustainability of coupled natural-human systems.