It's common knowledge that Yellowstone Park sits on top of an ancient supervolcano, but what happened last time it erupted?

The biggest volcanic eruption in the last 2 million years occurred some 74,000 years ago when Mount Toba, a supervolcano in Indonesia, blew its top, spewing massive volumes of rocks and ash across the ...

When Toba erupted 74,000 years ago ... In fact, just "little" Mount Tambora's eruption alone set off the "Year Without a Summer," where frost and blizzards plagued much of the Northern Hemisphere.

The Alaska Volcano Observatory says that if the snowcapped volcano erupts, the impacts could include damage to aircraft from ash.

A volcano near Alaska's largest city is showing new signs of unrest, with experts saying the likelihood of an eruption at Mount Spurr in the next few weeks or months has increased. The Alaska ...