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

State volcanologists on Thursday afternoon monitored a minor phreatic eruption at restive Taal Volcano in Batangas.

Volcanoes in the United States that have been active since spring woke up, brushed themselves off, and then went back to ...

Closing Mauna Loa and three other U.S. sites that track greenhouse gases would disrupt a decades-long record of the planet’s ...

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

The dogged search for a bird that many people figured had gone extinct included torrential rains, washed-out bridges, swine ...

The vote marked the first time in decades that a president has successfully submitted such a rescissions request to Congress, ...

Standing near the base of Teakettle Mountain, where the Columbia Falls Aluminum Company’s contaminated Superfund property ...