Tsunamis aren’t just bigger-than-average waves. Triggered by undersea earthquakes or volcanic eruptions like the one in Tonga, they are fast, massive and potentially destructive. Here’s why.

A new study finds curious properties of tiny crystals hold clues to earthquake formation.

Examining the collapse of the erupting volcano Kīlauea's caldera allowed researchers to confirm current ideas about friction's role at earthquake faults.

Microscopic imperfections in rock crystals deep beneath Earth’s surface play a deciding factor in how the ground slowly moves and resets in the aftermath of

On the 10th anniversary of the Fukushima nuclear disaster, two experts explain why human choices are more important to nuclear safety than technology, and why the job is far from finished.

The last time south-west Iceland experienced a turbulent period of earthquakes and volcanic eruptions was in the 1300s.

California was thought to be an exception, a place where oil field operations and tectonic faults apparently coexisted without much problem. Not any more.

Seismologists used data from NASA's InSight Lander to get measurements deep within Mars. What they learned might clarify planetary formation.

"This quiet period is the longest and most prominent global anthropogenic seismic noise reduction on record."