View the Resource By Michelle Shumate, Peter Busse, Junjie Song, Jun Yan, Dandan Zhou, Lei Zong The HIV–AIDS epidemic is one of the most challenging and significant health crises facing the world today. In order to cope with its complexities, the United Nations and World Health Organization have increasingly relied upon the resources offered by networks of HIV–AIDS nongovernmental organizations (NGOs). The research reported here uses evolutionary theory to predict