One of the most explosive volcanoes in U.S. history began its eruption with a trickle, not a blast. Mount St. Helens' gas-laden magma oozed into the cone before the mountain finally erupted in 1980.

Watch live as the world’s largest active volcano, Mauna Loa in Hawaii, erupts for the first time in almost 40 years ...

Lava and ash have once again transformed the summit of Kīlauea into a vision that looks ripped from a disaster film, with towering fountains, roiling gas and a sky streaked in volcanic debris. The ...

One of the most vivid portraits of “reborn” black hole activity – likened to the eruption of a “cosmic volcano” spreading almost one million light-years across space – has been captured in a gigantic ...