USGS: Volcano could erupt as early as Sunday

A volcano in western Peru has spewed enough ash to fill a small country house, the USGS said Saturday.The volcano, which is the second-largest in the Amazon Basin, erupted on

A mysterious eruption on the Yellowstone volcano has scientists scratching their heads

Yellowstone National Park is under an unprecedented amount of pressure following an eruption last month that scientists say could be linked to an ancient volcano.The eruptions, which have prompted a