It was the terrifying sound of what would become the United States' deadliest landslide in decades ... geologists are tracing the geological history of Oso to explain why the site was so unstable.

This created a 23-square-mile landslide, the largest in recorded ... While the 1980 eruption of Mount St. Helens was the most deadly and destructive in U.S. history, most of its subsequent ...

In Colombia, a community is dealing with the aftermath of a massive and deadly mudslide in the department of Cauca. Colombia's President Ivan Duque visited the region to see how the government can ...

It was the terrifying sound of what would become the United States' deadliest landslide in decades ... geologists are tracing the geological history of Oso to explain why the site was so unstable.