Mount Shasta, a steep-sided Cascade Range stratovolcano in Northern California, looms above Little Glass Mountain, a thick obsidian flow erupted from the Medicine Lake shield volcano about 1,000 years ...

Plans are underway to implement a new volcano monitoring system across the United States. The radar-based system, called VolcSARvatory, was developed in a joint effort by the University of Alaska ...

Topographic mapping has been a key component of volcano monitoring for decades, helping scientists to study morphologic changes and predict the paths of lava flows during eruptions. Lidar systems are ...

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A volcano system in southwestern Iceland erupted for the fifth time in five months. Why does this keep happening? And will it happen again?

Scientists have collaborated to analyze the inner workings of Bolivia's 'zombie' volcano, Uturuncu. By combining seismology, physics models and analysis of rock composition, researchers identify the ...

Mount Rainier’s quiet, snowcapped profile hides a restless interior that has just rattled itself with more than a thousand tiny earthquakes, a reminder that one of the country’s most dangerous ...

Add Yahoo as a preferred source to see more of our stories on Google. Spectators watch plumes of smoke from volcanic activity between Hagafell and Stóri-Skógfell, Iceland, Saturday, March 16, 2024. | ...

For much of 2025, an underwater volcano off the Oregon coast was treated as a geological ticking clock, with forecasts suggesting it could erupt at almost any moment. Instead, the year is ending ...

The Bárðarbunga volcano system was responsible for Iceland's largest eruption for 300 years back in 2014. After a recent increase in seismic activity, could it be about to erupt again? When you ...