From an ad to stir up interest in carbonated beverages to a dropped partnership between a Hollywood actress and a humanitarian group, some netizens continue to dissect every move made by Scarlett Johansson and SodaStream.

Over the past few decades, it has become possible to speak of a "global food system"—shorthand for the trade patterns, shaped by multinational companies, that move raw agriculture commodities and processed food across borders. Yet as this fascinating new Oxfam study shows, there are still huge differences in people's experience of food across the globe. Oxfam ranked nations on four criteria: whether food exists in plentiful supply, whether it's broadly affordable, whether it's of good quality, and whether it's causing high rates of obesity and diabetes.

Citizen-led development is key for empowering individuals and creating transparency and accountability. In the case of U.S. foreign assistance, Oxfam America advocates for it to be led and designed by the people who need it most. For too long, U.S. government development efforts have worked at cross-purposes with the very people who are trying to lead lasting change in poor countries.