A seismologist from Seattle discussed recent volcanic activity across the United States. Here's what you should know.

From Mount St Helens in Washington to the Mauna Loa in Hawaii, these structures have a complicated history of disaster and beauty.

We have seen other earthquakes in the area that have not generated significant tsunami waves, but we’re treating it seriously and going through our procedures, making sure communities are notified so ...

The Senate has passed about $9 billion in federal spending cuts requested by President Donald Trump, including deep ...

The National Weather Service said there is no tsunami threat to Hawaii after a 7.2 magnitude earthquake shook the Alaska Peninsula.

A preliminary magnitude 7.3 earthquake struck off the coast of Alaska this morning but does not pose a tsunami threat to ...

The authorities issued tsunami warning for South Alaska and the Alaska peninsula after 7.3 magnitude earthquake struck off ...

Jodie Stevens joins ABC News Live from outside of Anchorage, Alaska, after a 7.3 magnitude earthquake struck and forced an evacuation from her high school reunion.

The Senate has passed Donald Trump’s request to cancel $9 billion in foreign aid and public broadcasting spending, moving ...