Mount St. Helens in Washington State began erupting with a series of steam-driven blasts. These intensified over weeks, leading to a massive eruption on May 18 at 8:32 a.m. Rated a 5 on the Volcanic ...

A study suggests that Venus' volcanic "pancake domes" push the planet's crust down, forming bulges toward the surface. This ...

CASTLE ROCK, Wash. — The Mount St. Helens Visitor Center in Castle Rock will reopen on May 31. The center just finished its ...