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

A new study corrects the recorded depth of an earthquake in Japan, revealing that it was not the deepest in history.

A volcano once dormant in southwest Iceland erupted Wednesday for the 12th time in four years as nearby resort towns were evacuated as a safety precaution.

Recent volcanic activity across the Pacific Ring of Fire has raised alarms among scientists and volcanologists, with several ...