A unique phenomenon known as a "Tephra Devil" was captured swirling over a crater on Hawaii's Kilauea during the volcano's ...

Editor’s note: This story initially stated that the Warren Petersen campaign had only $123,000 on hand as of the last reporting deadline. In fact, it has $1.5 ...

USGS scientists have recently observed low-density tephra produced in recent eruptions become short-lived “Tephra Devils,” ...

Hawaii Volcanoes National Park blends dramatic volcanic scenery with deep cultural significance.

Hawaii's Kīlauea volcano erupts for 9 hours during its 47th episode.

By throwing a wrench in the state’s Regional Haze State Implementation Plan, advocates say HECO can sidestep rules years in ...