A 5.1-magnitude earthquake was reported in Alaska on Tuesday (April 1), according to the United States Geological Survey. ...

The Valdivian Earthquake, or the Great Chilean Earthquake, is the largest on record. It measured in at a magnitude of 9.5.

The Alaskan Volcano Observatory has shared new images of plumes of gas streaming out of Mount Spurr, which scientists suspect ...

Anchorage, Alaska - Alaska’s Mount Spurr volcano continues to show signs of unrest, and that has led to an alert level ...

A sharp earthquake shock was registered yesterday morning at the Harvard Seismograph Station. Professor J. B. Woodworth, in charge of the station, reported at 1 o'clock yesterday afternoon that ...