Add Yahoo as a preferred source to see more of our stories on Google. Earthquake with tremor graphic A newly identified link between two notorious geologic zones suggests a major earthquake at one ...

On a quiet stretch of central California ranchland, scientists have spent decades trying to turn one of Earth’s most dangerous forces into something almost predictable. Parkfield, perched on the San ...

They are two of the West Coast’s most destructive generators of huge earthquakes: The San Andreas fault in California and the Cascadia subduction zone offshore of California’s North Coast, Oregon, ...

The threat of a 9.0-magnitude earthquake along the Cascadia Subduction Zone has hung over the Pacific Northwest for decades. Seismologists and emergency managers say “The Big One” could be one of the ...

One of the most dangerous faults in the United States, the Cascadia Subduction Zone, may be able to trigger an earthquake on the San Andreas Fault, a new study says. But some scientists want more ...