Archaeologists unearthed skeletal remains of four people in a well-appointed Roman home, along with signs of their efforts to ...

An underground hydrothermal explosion at Yellowstone National Park sent visitors running for their lives Tuesday morning as a massive black mushroom cloud of steam and debris rose hundreds of feet ...

In 2010, the eruption of Eyjafjallajökull volcano in Iceland caused the largest air traffic shutdown since World War Two.

But volcanic events can be highly unpredictable ... scenario in which a deep fissure opens in the earth, spewing a mushroom ...