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

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

Yet much about the landscape under the ice has been uncertain, because ground and air surveys are difficult in the region.

Scientists used satellite data to confirm that Earth's crust is "dripping" into the mantle beneath Turkey's Central Anatolian ...

Scientists have devised the most detailed map to date of the terrain hidden below the vast ice sheet blanketing Antarctica, ...