Earth’s atmosphere is slowly leaking into space, and new research shows some of it reaches the Moon, where it may be ...

Learn about the movement of tectonic plates off the coast of northern California, a process that could incite major earthquakes.

Scientists discover ultra-weak faults near the 7.2 magnitude earthquake in Haiti that continued to slip for weeks.

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

NORFOLK, Va. — Fault lines are fractures or breaks in the Earth's crust where tectonic plates move past each other, often resulting in earthquakes. These geological features are classified into three ...