The American Meteor Society confirmed the Saturday night sighting was definitely a fireball, and not a rocket launch or ...

Seismic tremors reveal a shallow fragment of ancient tectonic plate beneath Northern California, helping explain damaging ...

Many of the state's largest earthquakes have struck near the junction, where the Pacific, North American and Gorda plates ...

Trump’s push to break that chokepoint is lifting rare-earths startups. Phoenix Tailings, a startup focused on recycling ...

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

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