(CNN) – Iceland has declared a state of emergency and more than 3,000 residents have been urged to evacuate the small, coastal town of Grindavík as the country’s authorities anticipate the imminent ...

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, ...

When tens of thousands of earthquakes shook Santorini, the cause wasn’t just shifting tectonic plates—it was rising magma. Scientists tracked about 300 million cubic meters of molten rock pushing up ...

Residents of a fishing town in southwestern Iceland left their homes Saturday after increasing concern about a potential volcanic eruption caused civil defense authorities to declare a state of ...

Every day, like clockwork, geysers in Yellowstone National Park erupt in a burst of volcanic activity as tourists ooh and ah at the spectacle. (SOUNDBITE OF ARCHIVED RECORDING) UNIDENTIFIED CROWD: ...