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Green Justice Philly, new coalition to protect Philadelphians’ health and safety from the city’s fossil fuel industry, and to create a sustainable 21st century economy that will support clean air and water and healthy communities. 
Initiatives by topic
Arts, sport and culture
City of Asylum, nonprofit in Pittsburgh
SeeClickFix, community issues in Philadelphia
Imagine Philadelphia: Laying the Foundation (Philadelphia, Pennsylvania) on Participedia
Sustainable transport activism
Towards sustainable economies
The Mutual Aid Network of the Lehigh Valley addresses the social determinants of health of communities' most vulnerable members, including formerly incarcerated people, juveniles aging out of the foster care system, homeless populations, individuals recovering from addiction, and newly settled refugees. This project address tackles these issues by tackling social isolation, one of the key factors that contributes to poor life and health outcomes. 
News and comment
Civic Commons: Spreading opportunity to the whole city, Jul 10 
Can parks save Philadelphia? Feb 21 
From isolation to interdependence: How Reimagining the Civic Commons is connecting Philadelphia, Nov 8 
City releases reworked sustainability agenda calling on all Philadelphians to participate, Nov 2 
Pittsburgh is using 10 goats and their donkey guardian to cut unruly grass, March 10 
Tracks from railroads’ past seen as path to future, August 16 
University of Pittsburgh students plan urban ag law firm, May 17 
Transition Reflections: Joni Carley, Happiness Maker, April 9 
Transition Town Media opens a FreeStore in Media, May 1 
The New Philadelphia Story Is About Green Infrastructure, December 18 
Citizens data initiative
Grounded in Philly, "facilitates the transitioning of vacant land into community-controlled green spaces, gardens and gathering places."
Lots to Love, "a guide for community organizations and residents who are interested in transforming vacant lots into well-loved spaces." Strengthening and greening the Pittsburgh region.