WASHINGTON — A vast pool of molten rock in the continental crust that underlies southwestern Washington state could supply magma to three active volcanoes in the Cascade Mountains — Mount St. Helens, ...

Every day, the supervolcano lurking under Yellowstone National Park belches up 45,000 metric tons of carbon dioxide - much more than could be produced by the known magma chamber that lies just below ...

WASHINGTON -- A vast pool of molten rock in the continental crust that underlies southwestern Washington state could supply magma to three active volcanoes in the Cascade Mountains -- Mount St. Helens ...

When the dinosaur-snuffing asteroid hit Earth some 66 million years ago, it produced a subterranean pool of magma roughly nine times larger than the current caldera at Yellowstone National Park, ...

Yellowstone’s volcanic heart is one of the largest magmatic systems on Earth, yet the park’s steaming vents and geysers are missing a gas that usually signals magma close to the surface. That absence, ...

Supervolcanoes with the power to destroy human civilisations may have much shorter fuses than was previously thought, scientists believe. The news could be bad for the US, where a supervolcano is said ...