Volcanoes often look deceptively quiet until the moment they unleash towering plumes of ash and gas, yet the precise switch that turns a gentle rumble into a devastating blast has remained stubbornly ...

Scientists recreate magma and water reactions in a lab to understand explosive volcanic eruptions and improve hazard predictions.

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. A volcanic eruption does not always involve molten rock bursting from a familiar cone. Across the Solar System, eruptions can send ...