One of the most deadly and dangerous volcano hazards isn’t lava. Mudflows called lahars can come without clear warning.

Ethiopian volcano eruption: According to the Smithsonian Institution’s Global Volcanism Program, this volcano in Ethiopia has erupted for the first time in about 12,000 years. The eruption did not ...

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 ...

When you think of the United States, images of sprawling cities and vast landscapes might come to mind, but not the hidden and ever-present geological threat: volcanoes. While you might associate ...

Scientists compare volcanic cones on Earth and Mars to explain how gas-rich magma forms scoria cones. Spacecraft observations and Earth analog sites provide evidence of similar eruptive processes.

Kilauea volcano put on another spectacular show Friday night with lava fountaining in Halemaumau crater reaching new heights for the latest eruption, which began nearly 10 months ago. Scientists with ...

A series of lava fountains building -a cone perched on the crater rim … sounds like the ongoing eruption in Halema‘uma‘u at the summit of Kilauea, but this description could also fit the Kilauea Iki ...

A volcano in Russia's far east on Wednesday spewed ash several kilometers into the sky, authorities said, putting on a spectacular display in its latest eruption. A series of mild eruptions at the ...

Kanlaon Volcano on Negros Island had a short eruption on Friday night, and this caused ashfall and pyroclastic density currents (PDCs) to flow down its slopes, the Philippine Institute of Volcanology ...