A previously quiet fault line beneath North America is now feared to be a ticking time bomb, and experts warn it could unleash a devastating earthquake with no warning, shaking parts of the US.

By tracking swarms of very small earthquakes, seismologists are getting a new picture of the complex region where the San ...

Tremors beneath Northern California show hidden plate movement, helping scientists better understand where future big ...

Invisible earthquakes are revealing a hidden tectonic puzzle beneath California’s most dangerous fault zone.

Northern California’s coast keeps you on alert, even on quiet days. Offshore, three tectonic plates meet near Humboldt County ...

Three of the great tectonic plates that make up the Earth’s crust meet at the Mendocino Triple Junction, off the Humboldt ...

A new study uncovered hidden activity on California's fault lines.

Scientists are uncovering a hidden and surprisingly complex earthquake zone beneath Northern California by tracking swarms of ...

Scientists uncover hidden faults beneath Northern California’s Mendocino triple junction. The discovery reshapes ...