Researchers have identified a previously unknown type of earthquake that can begin as deep as 55 miles underground.

This is a developing story. ABC4 will update this post as more information becomes available. WAYNE COUNTY, Utah (ABC4) — A 4.0 magnitude earthquake occurred around 10:32 p.m. near Cainesville, Utah.

Nearly 50 years ago, a puzzling earthquake beneath northern Utah jolted scientists' understanding of how Earth works. Now, ...

New geological models and updated hazard assessments from the U.S. Geological Survey and leading universities are once again ...