A massive 1,000-foot "mega tsunami" could strike the U.S. West Coast — and scientists say it’s not a matter of if, but when. Triggered by the dangerous Cascadia Subduction Zone, this wave could drown ...

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 ...