Map: How the world’s countries compare on income inequality (the U.S. ranks below Nigeria)

Map: How the world’s countries compare on income inequality (the U.S. ranks below Nigeria):

The way we measure income inequality is changing. After years of relying on a complicated metric called the Gini coefficient, some economists argue that we should adopt the Palma ratio, which measures the gap between the rich and the poor in a society. My colleague Dylan Matthews explains how the Palma works and why it might be superior (more on that below).