Racing to Find the Cure for His Own Cancer

In 2005, Josh Sommer, then 18, had just started college life at Duke University when he found out he was dying. "It was just utter shock," Sommer said. "I guess the best way I could describe it is the same feeling I felt after 9/11. Just total helplessness, hopelessness, not knowing what I should do next. I have a tumor in my head and not only that, it's in a difficult location within the center of my head." Watch "World News with Charles Gibson" TONIGHT at 6:30 p.m. ET for the full...Full Story