How does 'toxic stress' of poverty hurt the brain?

Aired: 6/27/2015 | 0:09:36 | Clip
A growing body of research shows that the stress of growing up in poverty can have long-term effects on children's brains and cognitive development. How can so-called “toxic stress” be prevented? NewsHour’s Megan Thompson reports in our latest story from the continuing public media series "Chasing the Dream.”