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.

A Martian volcano once thought to be the result of a single eruption turns out to have a much more complex past. Orbital imaging and mineral data show it developed through multiple eruptive phases, ...

Visual observations have been a backbone of volcano research more than 2,000 years and remain fundamental to understanding ...

Dozens of people have died, hundreds are missing and many more homes were destroyed after separate volcanic eruptions in ...

Add Yahoo as a preferred source to see more of our stories on Google. An aerial view of the Crater Lake Caldera in Oregon. Obviously, visible lava spewing from a volcano’s caldera, like Hawai’i’s ...

When tens of thousands of earthquakes shook Santorini, the cause wasn’t just shifting tectonic plates—it was rising magma. Scientists tracked about 300 million cubic meters of molten rock pushing up ...

The alert level for Mauna Loa is currently “normal”; we expect to see additional changes such as increased seismicity or gas emissions before any future eruption. Even during quiet times, keeping a ...