Plotting a graph takes time. Often mathematicians just want to know the key features. These are: shape, location and some key points (such as where the graph crosses the axes or turning points).

This graph tells you that the richest 1 percent has captured more than half of income growth during periods of economic expansion in the 21st century. If more people knew that, would they support ...

Plotting a graph takes time. Often mathematicians just want to know the key features. These are: shape, location and some key points (such as where the graph crosses the axes or turning points).

Since World War II, inequality in the U.S. has gone through two, dramatically different phases. In the first phase, known as the great compression, inequality fell. Incomes rose for people in the ...

Here's the story of income inequality in America over the past 40 years. Hover over each line to identify household income, and click through to see the percentage growth over the past 40 years. The ...