If the theory is proven correct, the consequences could be enormous, spelling a much more risky, explosive future.

Volcanoes that dominate postcards and disaster movies are often the ones we can see, their peaks etched against the sky. Yet ...

On the flanks of Washington State Mount Rainier, a spike in seismic rumbling has revived an old, unsettling question for the ...

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 melted the snow and ice and mixed with the ...

Scientists warn that lesser-known, dormant volcanoes pose a greater global risk than their famous counterparts due to inadequate monitoring and underestimation.

Here’s what you’ll learn when you read this story: Geothermal energy accounts for only 0.4 percent of the U.S.’s energy output, but by using a technique known as “superhot rocks,” that number could ...

As Hawaii prepares for a possible "explosive eruption," confusion has arisen about the relationship between Kilauea and the West Coast's "ring of fire" volcanoes. But experts say there's not cause for ...

Scientists have recorded the "largest" earthquake swarm at Mount Rainier in Washington state since 2009, the U.S. Geological Survey reported. The swarm at the second-most seismically active volcano in ...

One of the most dangerous volcanoes in America was shaken by hundreds of earthquakes Tuesday morning. Mount Rainier, which the U.S. Geological Survey considers the second most dangerous volcano in the ...

Scientists from Mexico’s National Autonomous University have created the first three-dimensional image of the Popocatépetl ...