It was small by volcanic standards, but massive by human ones: on this day in 1980, Mount St. Helens erupted in what the ...

Add Yahoo as a preferred source to see more of our stories on Google. Geologists have spotted a heightened period of seismic activity on Mount Saint Helens recently. Is it getting ready to rock? Mount ...

Washington state may not have to worry about hurricanes, but it is volcano country. The United States has 161 active volcanoes – all in the western U.S. – but only 18 are classified as a "very high ...

Add Yahoo as a preferred source to see more of our stories on Google. Strong winds across parts of Washington state have kicked up volcanic ash deposited during the 1980 eruption of Mount St. Helens, ...

The most destructive volcanic eruption in United States history happened less than half a century ago in Washington state. On May 18, 1980, the north side of Mount St. Helens, in southwestern ...

Saturday marks the 44-year anniversary of Mount St. Helens' eruption in Washington. The blast on May 18, 1980, is the worst volcanic eruption in U.S. history, killing 57 people and spewing 520 million ...

It started as a go-for-broke experiment, but it wound up saving an ecosystem.

COUGAR, Wash. – Several Washington agencies will look back on the 1980 eruption of Mount St. Helens throughout May. There are five active volcanoes scattered across the Evergreen State. Volcano ...

MT. ST. HELENS, Wash — For many people who lived through the 1980 eruption of Mount Saint Helens, it is the biggest news story of their lifetimes. 45 years ago, the mountain that had been rumbling for ...

Mount St. Helens looked like it might be erupting again. Commercial pilots flying in the area Tuesday reported clouds of fine volcanic ash rising into the air above the collapsed dome of the Cascades’ ...