An area near Petersville, Alaska, was hit with a 4.6 earthquake on Wednesday, according to the United States Geological ...

Tsunami warnings prompted gridlocked traffic as people tried to reach higher elevations in Hawaii, but the threat level was later downgraded.

A recent string of powerful earthquakes and volcanic eruptions in Russia and Alaska serve as stark reminders that the U.S.

The Cabinet Office has revised its guidelines on how companies and local governments should respond to emergency information ...

Some observers around the world are connecting Russia’s volcanic eruption to the 8.8 magnitude earthquake on that country's ...

A tsunami threat is over after several large quakes off Russia's Pacific coast The Pacific Tsunami Warning Center says there is no longer a danger of tsunami waves on Russia's Kamchatka Peninsula ...

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