July 25, 2011 1:34 pm MUMMIES OF THE WORLD EXHIBIT Chief Astronomer at The Franklin Institute Derrick Pitts walks us through the interactive mummification station at the Franklin Institute museum. US & World Videos 1:49 South Philly residents find ways to beat the summer-like heat, starting with water ice 9:46 Another NJ earthquake: The Lineup 2:54 Penn leaders reiterate to pro-Palestinian protesters that they need to pack up camp 1:44 Pro-Palestinian protesters remain on UPenn's campus despite warnings to disband 1:30 Protests calling for ceasefire continue at Penn