A volcano in Russia's far east on Wednesday spewed ash several kilometers into the sky, authorities said, putting on a ...

HONOLULU (AP) — Hawaii’s Mauna Loa, the world’s largest active volcano, has started to erupt, prompting volcanic ash and debris to fall nearby, authorities said Monday. The eruption began late Sunday ...

Hawaii's Kilauea was spraying a spectacular fountain of lava on Monday, keeping up its reputation as one of the world's most active volcanoes.

Far beneath the forests and hot springs of the American West, the continent’s largest active volcanic system is rumbling in ways scientists are only now beginning to fully resolve. New seismic ...

The largest active volcano in Oregon is being drilled into as part of an effort to create a cleaner energy source. Engineers are building a geothermal power plant that taps into the energy of the ...

Add Yahoo as a preferred source to see more of our stories on Google. When you think of the United States, images of sprawling cities and vast landscapes might come to mind, but not the hidden and ...

Did you know there are at least 1,350 active volcanoes around the world, and roughly 20 active volcanic eruptions on any given day? While many of them occur deep under the ocean – most volcanoes are ...

Scientists are monitoring a city of Chicago-sized swath of rising ground at the northern volcanic rim of the Yellowstone ...

Iceland's Vatnajökull Glacier is one of the most beautiful—and geologically important—places in the country.