Competition for Cooperation: variability, benefits and heritability of relational wealth in hunter-gatherers.

Many defining human characteristics including theory of mind, culture and language relate to our sociality, and facilitate the formation and maintenance of cooperative relationships. Therefore, deciphering the context in which our sociality evolved is invaluable in understanding what makes us unique as a species. Much work has emphasised group-level competition, such as warfare, in moulding human cooperation and sociality.

Rapidly rising food prices and the experience of food insecurity in urban Ethiopia: impacts on health and well-being.

The rise in food prices since 2007 is widely recognized as signaling a crisis of food insecurity among the world's poor. Scholars sought to chart the impacts of the crisis on food insecurity by conducting simulation studies, assessing anthropometric outcomes, and evaluating shifts in experience-based measures of food security. Few studies, however, have investigated the broader impacts on those most vulnerable and how rapid rises in food prices play out in the everyday lives of those most impacted.