Popocatépetl emerged in the crater of other volcanoes in its current form more than 20,000 years ago and has been active ...

A major discovery beneath Yellowstone National Park has revealed a magma cap located nearly 2.4 miles below the surface, which could help prevent a massive volcanic eruption. Using advanced seismic ...

(NEXSTAR) — There have long been questions about when Yellowstone’s volcanic system could see an eruption, especially after a massive hydrothermal explosion was caught on camera last summer.

A study of bubbles trapped in pumice rock suggests it's a lot easier for volcanoes to erupt than we think, say Australian researchers. Geologists Dr Heather Wright and Dr Roberto Weinberg of Monash ...

Learn why Yellowstone mysteriously does not produce sulfur dioxide, and what it means for volcanic unrest.

Most of the world’s volcanoes that pose a risk to humans already have detailed maps of their interiors, but not Popocatépetl ...

For the last year, Alaska's Mount Spurr has been showing signs of a potential eruption on the horizon. If an eruption happens, it would likely occur at Crater Peak, shown in the background of this ...

The PHIVOLCS Volcano Alert Level Scheme is a guide to understanding the state of an active volcano, the current threat it ...

It is thought the cap may be helping to stop the volcanic system from erupting by constantly releasing gases - and pressure - from underneath its surface. A "breathing" cap of magma is stopping one of ...