A new study of California's earthquakes say that building pressure underneath two major fault lines converging at Cajon Pass ...

While less known to the general public, doublet earthquakes have long been studied by seismologists.

Japan issued a special advisory on Monday warning of an increased risk of earthquakes at magnitude 8.0 or stronger, after a powerful jolt rattled the country's north and prompted a tsunami warning.

An earthquake registering a preliminary magnitude of 7.7 off northern Japan on Monday prompted a short-lived tsunami alert and the advisory of a higher risk of a possible mega-quake for coastal areas ...