This documentary reveals how one of the tallest dams in the world caused a disaster without ever collapsing. On the night of October 9th, 1963, a mass of earth the size of a small town tore loose from ...

A "megathrust" earthquake and tsunami would devastate the Northwest United States, a geologic region of the Pacific Ocean's "Ring of Fire" called the Cascadia Subduction Zone, where major tectonic ...