What’s behind America’s rising maternal mortality rate

The U.S. has the highest rate of mothers dying during pregnancy, childbirth and postpartum of any developed country -- 26 women for every 100,000 live births. Last week, NPR and ProPublica published a joint investigation into the reasons why mothers are dying. ProPublica reporter Nina Martin joins Hari Sreenivasan from Oakland, California, to discuss what the investigation found.