Mudslides and landslides: Widely cited data is from 1985

Volunteers unload donated supplies during heavy rains in Darrington, Wash., Friday. One week after a massive mudslide hit nearby Oso, crews are working to find and identify victims. Data about landslides' annual effects are decades old, geologists say.
Volunteers unload donated supplies during heavy rains in Darrington, Wash., Friday. One week after a massive mudslide hit nearby Oso, crews are working to find and identify victims. Data about landslides' annual effects are decades old, geologists say.