http://tags.library.upenn.edu/tag/transportation+atlantic_yards PennTags Feed http://tags.library.upenn.edu/makerecord/url/7755 http://tags.library.upenn.edu/makerecord/url/7755 <br /> <em>Ron Shiffman is a professor at the Graduate Center for Planning and the Environment at the Pratt Institute, director emeritus of the Pratt Institute Center for Community and Environmental Development, and from 1990-96 a commissioner on the New York City Planning Commission.</em>