Like many older industrial cities, the Pittsburgh region has its share of blight. According to the most recent data from the 2010 census, there are more than 50,000 vacant houses in Allegheny County.
For more than a century, federal, state and city governments have tried to address the issue. Today, a new generation of tools is being used in attempts to clean up blighted neighborhoods.
If a city were a human body, then blight is a disease, according to Aggie Brose, deputy director of the Bloomfield Garfield Corporation.