Find out how Philadelphia plans to clean every block in the city this summer with Mayor Cherelle Parker's ambitious 13-week citywide cleanup initiative.
Alan Mallach's new book predicts declining birth rates will mean smaller cities and slower economic growth across much of the United States and the world.
Many Philadelphia residents are pitching in to reduce blight this spring, some with the goal of making neighborhoods safer. Some research shows that beautifying vacant lots reduces gun crime in the surrounding area.