Sinkholes threaten a natural gas pipeline in Chester County. A Philadelphia rowhome becomes a historical landmark because of its connection to the Underground Railroad. Frank Newport, editor-in-chief at the Gallup Poll, puts Trump’s new tariffs in perspective. Pennsylvania farmers say they’re getting shortchanged by gas companies paying to drill on their land. Sozi Tulante, Philadelphia’s outgoing City Solicitor, reflects on his time in City Hall. The Philadelphia Museum of Art gets its dues from a Super Bowl wager with the Museum of Fine Arts Boston.