Nobel Laureate economist Joseph Stiglitz warns of 'inequality emergency'

In 1966, Nobel Laureate Joseph Stiglitz wrote his PhD thesis on inequality. Almost sixty years later, after decades of research, numerous books, and international acclaim, he has led a new report for the upcoming G20 summit in South Africa, warning that the world is now confronting an “inequality emergency.”GUEST: Nobel Laureate Economist, former chief economist of the World Bank, and Professor at Columbia University, Joseph Stiglitz.PRODUCER: Ali Benton