September 27, 2015 3:48 pm Pope Stops at Knotted Grotto On his way to Sunday Mass, Pope Francis’ popemobile made a stop so the pontiff could look at strips of paper left by people at the knotted grotto outside Philly’s basilica. US & World Videos 2:47 Taylor Swift-themed group uses lyrics to shine a light on addiction, recovery 1:29 Jefferson Dad Vail Regatta celebrates 85 years on the water 1:49 Jefferson Women's Rowing team member talks Dad Veil Regatta 1:56 Pro-Palestinian protesters march through the city after encampment cleared on Penn's campus 2:06 Clear the Shelters: Meet Gus