When geologists study volcanic hazards or try to anticipate what a volcano may do in the future, one of their primary tools is to examine the volcano’s past behavior.

A Martian volcano once thought to be the result of a single eruption turns out to have a much more complex past. Orbital imaging and mineral data show it developed through multiple eruptive phases, ...

Dozens of people have died, hundreds are missing and many more homes were destroyed after separate volcanic eruptions in Hawaii and Guatemala that made headlines worldwide in recent months. And ...

Volcanoes are nature's most dramatic rocks, and while their eruptions can be awe-inspiring, they also pose serious threats to nearby communities and global climates. Scientists vigilantly monitor ...

Satellite images have captured a rare volcanic eruption that occurred Sunday at Ethiopia’s Hayli Gubbi volcano, sending towering ash plumes toward Yemen and Oman. The eruption is the first recorded ...

Volcanoes can erupt suddenly, but satellite technology now detects hidden ground shifts and heat changes. This helps scientists monitor remote volcanoes where ground sensors are scarce. These advanced ...

Volcanoes often give little warning before they erupt, but now scientists have discovered an unexpected early warning sign—trees. This new finding comes from a joint study by researchers from NASA, ...

Ever wonder what it would look like to be engulfed in a lava fountain as you choke on volcanic ash and burn to death? No? Well, you’re wondering now, aren’t you? Don’t worry, what you’re about to see ...

Volcanoes and wildfires can inject millions of tons of gases and aerosol particles into the air, affecting temperatures on a global scale. But picking out the specific impact of individual events ...

Fluid inclusions in volcanoes are dominantly composed of carbon dioxide. At magmatic temperatures — 2,192 degrees — the density of the carbon dioxide strongly depends on pressure, which is influenced ...

Rare 'limnic eruptions' can unleash deadly, invisible gas clouds from deep lakes, as seen in Cameroon's 1986 Lake Nyos ...