A gigantic bulge in the north rim of the Yellowstone caldera is the latest sign of volcanic activity in the national park.

"What makes the event even more extraordinary is that it did not involve a single volcano, but multiple active sources." ...

An international assessment report has been released to provide definitive statements on the atmospheric impacts from a huge volcanic eruption in 2022. The assessment was unprecedented for a specific ...

When massive volcanic eruptions occur, they inject millions of tons of sulfur dioxide into the stratosphere, where it forms sulfate aerosols that scatter incoming solar radiation and result in global ...

In the Pacific Northwest, a surge of seismic activity has pushed one underwater volcano into what researchers describe as a very high likelihood of eruption, with some models putting the odds near 95 ...

Indonesia’s rumbling Mount Lewotobi Laki Laki erupted twice on Monday, sending a column of volcanic materials up to 11 miles into the sky, dumping ash on villages and causing flight cancellations.No ...

Add Yahoo as a preferred source to see more of our stories on Google. Residents ride a tuk-tuk taxi along a road damaged by multiple earthquakes near the town of Kabanna in the north of Ethiopia.

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 ...

Indonesia’s rumbling Mount Lewotobi Laki Laki erupted Monday, sending a column of volcanic materials as high as 18 kilometers (11 miles) into the sky and depositing ash on villages. Indonesia’s ...