Studying tree rings helped scientists pinpoint when Mount Rainier last sent a lahar down its steep slopes, which could help ...

As the Maunaulu eruption waned, Kilauea summit inflated and two brief eruptions occurred in the latter half of 1971 — one in ...

Hawaiʻi Volcanoes National Park is sounding an unmistakable alarm as crowds surge to watch Kīlauea’s latest eruption, turning a remote summit into a choked maze of cars, pedestrians and volcanic ...

Much of the volcanic landscape that defines Iceland lies inland and requires deliberate exploration ashore. This is how to ...

A towering column of gas and ash from Kīlauea’s summit has once again turned parts of Hawaii’s famously clear skies into a ...