Freddie Gray's death sparked the riots in Baltimore, but they reveal deep systemic problems that plague many American cities.
An historic city just outside Pittsburgh is digging into the past to try to change the public's perception of blighted property.
For most Americans, especially the poor and minorities, the number of jobs near home is declining.
Bloomberg Philanthropies and other organizations have poured an unprecedented amount of money into making cities more innovative and collaborative. What happens when the money runs out?