PBS News Weekend S05 E62 August 5, 2017

On this edition for Saturday, August 5, record heat sweeps across the western U.S. and parts of Europe. Later, one scholar offers a new perspective on income inequality, arguing that the top 20 percent of earners in American society, not only the top 1 percent, limits economic mobility for lower-income groups. Hari Sreenivasan anchors from New York.