The Cascadia Subduction Zone could unleash "the big one" soon, causing havoc in Seattle.

Journey to the Center of Earth

Slow Earthquakes Are a Thing

Slow earthquakes regularly move more earth than deadly fast quakes, but no one feels a thing

The San Andreas Fault, cause of countless big quakes.

Journey to the Center of Earth

Seismic Slowdowns Could Warn of Impending Earthquakes

An "earthquake machine" in the lab is helping scientists understand what goes on just before a quake

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