Several U.S. states, from Hawaii’s fiery peaks to Alaska’s smoldering mountains, have the highest number of active volcanoes—creating breathtaking landscapes but also posing serious natural hazards. [ ...

This image from webcam footage provided by the United States Geological Survey (USGS) shows lava fountains shooting up high ...

Following Mount Etna's recent eruption in Sicily, we asked experts for their top volcano safety tips for travelers.

Lava fountains reached heights of more than 330 feet and feeding multiple lava streams. Scientists with the U.S. Geological Survey's Hawaiian Volcano Observatory said the fountains were likely to go ...

Sometimes, it's really hard to see the volcanoes for the rocks, especially if you're just a one-ton rover all alone in a ...

USGS Hawaiian Volcano Observatory geologists visited the western rim of Halemaʻumaʻu crater for a closer look at the active ...

When volcanoes are preparing to erupt, scientists rely on typical signs to warn people living nearby: deformation of the ...

One of the world’s most active volcanoes, Kilauea on Hawaii’s Big Island, began spewing lava from the north vent Wednesday, the latest event in an ongoing eruption that began almost six months ago.

One of the world’s most active volcanoes, Kilauea on Hawaii’s Big Island, began spewing lava from the north vent Wednesday, the latest event in an ongoing eruption that began almost six months ago.