A massive, iron-rich structure sitting at the base of Earth’s mantle beneath the Hawaiian Islands may be doing more than scientists previously understood to fuel the archipelago’s volcanic activity.

Hawaii's Kilauea volcano was erupting in its 43rd episode on Tuesday, prompting warnings from the U.S. Geological Survey and National Weather Service. A Volcanic Activity Notice issued by the USGS at ...

The Kilauea volcano in Hawaii erupted on Tuesday morning, spitting out football-sized particles into the air. Fallout of the particles were reported at overlooks in the Hawai'i Volcanoes National park ...