Videocast | Trekking for a cause

John Robb came back from his 2,100-mile trek up the Appalachian Trail a changed man. For starters, he hasn’t been able to get life on the rugged Trail out of his system. He also walked off the Trail with a determination to embark on a series of future hikes to raise money and awareness for cancer research. AFP editor Chris Graham reporting. Length: 3:15.