What happens, then, to keep the Earth the same size? The answer is subduction. In locations around the world, ocean crust subducts, or slides under, other pieces of Earth's crust. The boundary ...

The quake serves as a reminder of the long-term seismic risks posed by the Cascadia Subduction Zone, a less-publicized but potentially catastrophic fault system that extends from Northern ...

Earth's crust today has a surprisingly similar composition to the planet's first outer shell, or "protocrust," new research ...

OKANOGAN, Wash. — A 3.0 magnitude earthquake struck early Wednesday morning near Okanogan.