May 3, 2010 2:28 pm CyberKnife Pulmonologist, Dr. Ken Lander, tells us about CyberKnife, a revolutionary, non-invasive way to treat cancer patients. 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