What does the market crash say about China’s economy?

Aired: 1/7/2016 | 0:05:01 | Clip
The Chinese stock market dropped 7 percent in the first 29 minutes of trading, before shutting down to stem further losses. China’s second major crash in the past four days drove investor skittishness around the globe, including a Dow loss of nearly 400 points. Gwen Ifill learns more from David Wessel of the Brookings Institute.