For a pilot, the first signs of flying into an ash cloud can include sudden darkness, fluctuating airspeed, and landing ...

The historic Mount Tambora volcanic eruption spewed so much ash and debris that it triggered a “year without summer” and the ...

The volcanic ash dragged Franklin Sousley down as he staggered off the landing craft. That February 19, 1945, on the beaches of Iwo Jima, bullets whistled past the steel pot on his head, mortars ...

New research shows that elevation changes and earthquakes in Italy's Campi Flegrei volcanic area are caused by rising pressure in a geothermal reservoir -- not magma or its gases, as commonly thought.