Ross Reynolds talks with Irwin Redlener, author of "Americans at Risk: Why We Are Not Prepared for Megadisasters and What We Can Do." Redlener explains why natural disasters like the Oso landslide are rarely the wake-up calls we'd expect.
On Saturday, March 22, a mile-wide mudflow devastated Oso, Wash., 55 miles north of Seattle. The massive damage and mounting casualties have rocked the small community between Arlington and Darrington.
Disasters: The Wake-Up Calls That Never Happen

Irwin Redlener's book, "Americans at Risk."