Changing Skyline: Duck boats pose a threat to Schuylkill Banks

The most transformational project that Philadelphia built in the last decade wasn't a museum or a skyscraper, but the skinny, mile-long strip of plain asphalt that hugs the Schuylkill in Center City. On a crisp fall day, you can find runners from Penn, fishermen from Grays Ferry, and yoga devotees from Fitler Square jostled together on the 12-foot-wide recreation path, drawn by big-sky views of the sparkling river.