Add Yahoo as a preferred source to see more of our stories on Google. Stunning social media videos erupted from the northern coast of Colombia on Feb. 25, when a mud volcano exploded, shooting flames ...

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 dropped ...

NASA has spotted what could only be described as a "space volcano" erupting in a long-dormant galaxy, reversing a theory that ...

Add Yahoo as a preferred source to see more of our stories on Google. Image of active volcano shows magma pressure inside volcanoes can destabilize slopes and trigger collapse. (CREDIT: YouTube / CC ...

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.

Stunning social media videos erupted from the northern coast of Colombia on Feb. 25, when a mud volcano exploded, shooting flames high into the sky and prompting evacuations, local officials reported.

When individuals hear volcanoes, they tend to envision blazing eruptions blasting into the air. However, volcanoes can also collapse sideways, with their sides, or flanks, collapsing. Such a collapse ...