Tiny crystals suggest extinct volcanoes could still grow underground, a finding that could reshape how scientists assess ...

The last eruption of Greece’s Methana volcano was around 250 B.C.E. Ever since that event, which was recorded by the Greek ...

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 ...

Hawaii's Kīlauea volcano spewed lava nearly 1,400 feet into the sky during an eruption that ended early Christmas Eve morning, the U.S. Geological Survey (USGS) reported. The eruption, captured live ...

Scientists are predicting that a mile-long volcano off the U.S. West Coast will erupt this year. The Axial Seamount, an underwater volcano located about 300 miles off the coast of Oregon, is ...

Two-dimensional maps of clinopyroxene crystals that passed through a volcano’s magma chamber display a sharp increase in ...

Four decades on, the gap between well-monitored volcanoes and unmonitored ones still shapes who lives and dies. The new ...

The United States has more than 160 active volcanoes, but experts say it's hard to tell whether any will erupt soon, like Kilauea did in Hawaii, NBC News reported. Among these volcanoes are Mount ...