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VANCOUVER, Wash. — The large landslide that occurred on March 22, 2014 near Oso, Washington was unusually mobile and destructive.

While the number of large earthquakes fell to 12 in 2014, from 19 in 2013, several moderate temblors hit areas relatively new to seismicity, including...

The 2011 east coast earthquake felt by people from Georgia to Canada likely originated from a fault “junction” just outside of Mineral, Virginia...

Successfully resolving California’s long-standing water supply and ecosystem restoration conflicts in the Delta depends on sound policy based on the...

Three years after a magnitude 5.8 earthquake caused $25 million worth of damage to its pinnacles, buttresses and ceilings, the Washington National...

Thirty seismometers are being installed in the Nation’s capital this winter to monitor ground tremors to better estimate the intensity of ground...

In the early morning hours of September 23, 2004, a swarm of small-magnitude earthquakes about half a mile below Earth’s surface marked the...

In the early morning hours of September 23, 2004, a swarm of small-magnitude earthquakes about half a mile below Earth’s surface marked the...

The topic of Yellowstone supereruptions (ones producing greater than one thousand cubic kilometers of volcanic debris) generates much interest, but...

Despite the magnitude 8.2 earthquake that hit northern Chile in April 2014, the plate boundary in that region is still capable of hosting shocks of...