Katie Colaneri looks at which Philadelphia candidates will face challenges. Bobby Allyn reports on the possible causes of SEPTA’s drop in ridership. Kevin McCorry talks with Philadelphia Schools Superintendent William Hite about the apparent improved funding prospects from the state and city. Dave Heller discusses ecojustice issues and how cities should consider social and racial inequities when planning for sustainability projects. Dave Heller also talks with historian Jonathan Zimmerman on the political history of St. Patrick’s Day.