The power of volunteers changes everything. The needs in our host communities are vast, and so are the opportunities to make a genuine difference. United Nations agencies cooperate to address the fundamental obstacles preventing children worldwide from fully developing. Global Volunteers responds to help deliver resources where they’re most needed. We extracted the 12 Essential Services model from the innovative work of the World Food Program (WFP), United Nations Children’s Fund (UNICEF), World Health Organization (WHO) and the Food and Agriculture Organization (FAO). Our landmark work organized these essential services into three broad categories: Hunger, Health and Cognition. These are the areas where you make the greatest impact.