A deep-sea exploration off the coast of Hawaii has revealed a striking natural formation on the Pacific seafloor that’s left ...

Tours are returning to the slopes of Mount Etna after its largest eruption in four years sent tourists fleeing from a vast column of gas and ash on Monday. After footage of the dramatic eruption ...

VOLCANO, Hawaii -- Ever wondered what it's like to soar over the summit of an active volcano as ash plumes thousands of feet into the air? That's exactly what scientists with the United States ...

Ash from the catastrophic 1980 eruption of Mount St. Helens began to swirl around the volcano this week, creating a smoky haze that obscured its summit.

A volcanic eruption could destroy the Icelandic town of Grindavik or lead to extensive ash clouds, experts have warned. The country has been shaken by more than 800 small earthquakes today alone, ...