The Campi Flegrei caldera near Naples is stirring with increased volcanic activity, capturing the attention of scientists ...

American geologists are raising urgent concerns after new analysis of Yellowstone supervolcano's subsurface magma chamber ...

One of the world's most active volcanoes could begin erupting again over the holiday weekend, according to the U.S. Geological Survey. Kilauea, located on Hawaii's Big Island, is showing signs of ...

Social media videos are stoking fears about a catastrophic eruption in central Oregon, but the science tells a different story.

A scalding-hot pool of mineral water is shown at the Long Valley Caldera in 2019 near Mammoth Lakes. (George Rose / Getty Images) One of California's riskiest volcanoes has for decades been undergoing ...

Campi Flegrei is speeding toward a transition, which will either cause an eruption or a change to its underground magma chamber.

Campi Flegrei, a volcanic caldera west of Naples, is speeding toward a transition within the next decade, a new study suggests, but researchers can't yet say whether that transition will be an ...

Caldera formation arises when large volumes of magma are evacuated from a sub-surface reservoir, leading to gravitational collapse of the overlying rock into the evacuated space. The process begins ...

Large volcanic eruptions may have played a bigger role in triggering historical famines across China than previously ...