Volcanoes are often judged by the size of their eruptions, but volcanologists measure danger differently. A volcano becomes truly hazardous when explosive potential intersects with large populations, ...

We traveled deep into Ethiopia’s Danakil Depression to witness one of the most dangerous volcanoes on Earth — and things got ...

Who will stop the Rain-ier? Scientists are warning that Washington’s Mount Rainier could unleash a catastrophic mudslide that has the potential to devastate three large towns within minutes. Often ...

Seth Moran is worried about Mount Hood. In the 1780s, the volcano rumbled to life with such force that it sent high-speed avalanches of hot rock, gas and ash down its slopes. Those flows quickly ...

Scientists who have carefully tracked subterranean conditions and earthquakes around Washington's Mount Rainier for decades are warning that a rapid snow melt, though unlikely to occur, could result ...

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