GWEN IFILL:

Baltimore is not the only urban area coping with the challenges of expanding opportunity in poor communities, but according to a new analysis by Harvard's Equality of Opportunity Project, it may be one of the worst.

As laid out in The New York Times, poor children in Baltimore face even worse odds than low-income kids elsewhere, mostly because they remain in impoverished neighborhoods.

Baltimore in fact ranks among the worst areas when it comes to mobility. As this map shows, by the time he or she reaches the age of 26, a poor child growing up in Baltimore city will earn nearly $3,400 less than his or her counterpart in nearby Baltimore County, and about $2,400 less than in suburban Howard County.

But there's a bigger picture.

Nathaniel Hendren of Harvard University is a principal member of the team that did the research. He joins me now.

We talked about Baltimore as an example of a place where, frankly, young — poor young people are most likely to get stuck. Why is that?

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