Add Yahoo as a preferred source to see more of our stories on Google. Yellowstone's volcanic history is marked by three massive eruptions over the past 2.1 million years, creating a vast caldera and ...

ANCHORAGE, Alaska (KTUU) - The Alaska Volcano Observatory has seen an increase in volcanic gas emissions from Mount Spurr during flyovers in the last week. The observatory says that new magma has ...

The Yellowstone Caldera, a volcanically active region under and around Yellowstone National Park, has long been the subject of research, speculation and science fiction regarding the possibility of a ...

New research into molten rock 20km below the Earth's surface could help save lives by improving the prediction of volcanic activity. New research into molten rock 20km below the Earth's surface could ...

Every day, like clockwork, geysers in Yellowstone National Park erupt in a burst of volcanic activity as tourists ooh and ah at the spectacle. (SOUNDBITE OF ARCHIVED RECORDING) UNIDENTIFIED CROWD: ...

A study based on the sampling and analysis of volcanic ash at Cumbre Vieja volcano in the Canary Islands, located off Africa's northwest coast, suggests that the composition of magma could drive ...

A Martian volcano once thought to be the result of a single eruption turns out to have a much more complex past. Orbital imaging and mineral data show it developed through multiple eruptive phases, ...