A new report shows that inequality of productivity has grown even more than inequality of wages.

The late great Armen Alchian taught me that you can be rigorous with words. As a math major, I needed to hear that. Last week, I forgot that. I let algebra distort my thinking.

Many see Bernie Sanders and Elizabeth Warren as two peas in the liberal Democratic pod but they are actually quite different. Bernie Sanders is a revolutionary who wants to change what he calls the rigged American system. He comes from a European political tradition, socialism, and seeks to turn the economic order upside down.

Sociologist Susan Mayer of the University of Chicago talks about her book What Money Can't Buy with EconTalk host Russ Roberts. Mayer reports on her research which found that giving poor parents money had little measured effect on improving the lives of their children. She emphasizes the importance of accurately understanding the challenges facing children in poverty if the goal is to actually help them.