Washington Mudslide Linked To Logging As Scientists Hunt For 'Trigger' Of Deadly Slide

The massive mudslide that struck March 22 near the small town of Oso, Wash., wiped out more than two dozen homes and claimed the lives of at least 29 people. Several others are still unaccounted for or missing. As rescue workers continue to comb the muck and rubble for survivors, scientists are beginning to search for clues to what caused the deadly Stillaguamish River Valley mudslide.