Ben Bernanke: Slow productivity growth is weighing on US economy

Former Federal Reserve Chairman Ben Bernanke talked about his new his memoir, "The Courage to Act," on Monday, as the current Fed faces new challenges from a slowing China and whether the economic freeze there might put a lid on U.S. growth. With central bankers considering an interest rate hike for the first time in nine years, Bernanke wrote in a Wall Street Journal...