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.

The explosiveness of a volcanic eruption depends on how many gas bubbles form in the magma – and when. Until now, it was thought that gas bubbles were formed primarily when the ambient pressure ...

Chaos erupted in Indonesia on Wednesday as Mount Lewotobi Laki-laki, one of the country's most active volcanoes, blasted lava and ash into the sky. The first eruption struck at 1:35am local time, ...

An explosive eruption rocked La Soufrière volcano on the eastern Caribbean island of St. Vincent on Friday after the government ordered thousands to evacuate their homes nearby.Experts said the ash ...

SAN JUAN, Puerto Rico (AP) — An explosive eruption rocked La Soufriere volcano on the eastern Caribbean island of St. Vincent on Friday following mandatory evacuation orders from the local government.

While state volcanologists warn the public of an ‘increased tendency towards a hazardous eruption,’ the video circulating online doesn’t show the current state of Mayon Volcano ...