March 2, 2009 4:58 pm Snow: The Common Denominator in Delaware Salt. The common denominator in Delaware for people who needed to get the melt going! US & World Videos 0:20 Teen girl shot in Southwest Philly, suspect in custody 0:27 FBI inspects American Airlines plane at PHL after bomb threat 1:40 Penn officials urging pro-Palestinian protesters to pack up and leave campus 2:17 Clear the Shelters: Meet Tails 0:38 Jury says Philly owes $16 million for wrongfully convicted man