Beneath the steaming geysers and bubbling mud pots of Yellowstone National Park lies one of the world's most closely watched volcanic systems. Now a team of geoscientists has uncovered new evidence ...

When they came to a low ridge running off the side of Mount Terror, they trudged up it to a volcanic knob next to a flat spot. Loose rock was essential to their plan, so they stopped there to make ...

MANILA, Philippines (AP) — A restive Philippine volcano briefly erupted Tuesday on a central island, sending a 4-kilometer (2.4-mile) plume of ash and debris into the sky and forcing authorities ...