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.

Mount St. Helens erupted 45 years ago at 8:32 a.m. on May 18, 1980, blowing off the top of the mountain and causing the largest landslide in recorded history. It flattened 230 square miles of forest, ...

For a moment, it seemed like a blast from the past: a plume over Mount St. Helens on Tuesday looked like the volcano might be erupting again. But fortunately, this was not an eruption — just a ...

The Klyuchevskoy volcano on Russia's Kamchatka peninsula began erupting on Wednesday following a powerful earthquake off Russia's far eastern coast. Lava began flowing from what is the largest active ...