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 ...

Since then, Yellowstone has seen two more major volcanic eruptions and many smaller ones—earning the name “supervolcano.” The ...

After nearly 12,000 years in dormancy, a volcano in Ethiopia has erupted and hurled ash over unsuspecting communities. It's assumed that Hayli Gubbi, located in the Afar region of northeastern ...

"Explosive volcanism could repeatedly seed low latitudes with ice and ash, producing buried or insulated ice deposits that help explain the excess hydrogen signals measured near the equator." When you ...