More than 1,813 earthquakes and tremors ranging between 0.3 and ... especially since the region has not been able to design ...

More than 1,813 earthquakes and tremors ranging ... has not been able to design an effective evacuation plan that would ensure the rapid escape of 500,000 people.

Interactive map from the California Geological Survey shows the destruction potential of a tsunami wave in the Golden State.

The Alaska Volcano Observatory says that if the snowcapped volcano erupts, the impacts could include damage to aircraft from ash.