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

A hidden chunk of an ancient tectonic plate is stuck to the Pacific Ocean floor and sliding under North America, complicating ...

The James Webb telescope's search for habitable exoplanets is getting a big boost from its new star-watching companion, ...

Thundereggs look like regular rocks from the outside, but contain intricate and colorful mineral patterns inside — often made ...

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