Volcanoes are rumbling as scientists monitor earthquakes at Washington's Mount Rainier and Alaska's Iliamna volcano.

A supervolcano is located at Yellowstone National Park. Here's what happens to North America and the rest of the world if Yellowstone erupts.

The concept isn’t hypothetical. Tephra layers in Icelandic peat cores show that eruptions soared six-fold between 12,000 and ...

Heading to the Pacific Northwest, Skagit Valley in Washington state nabbed second spot. With low air pollution and over 6,000 ...

Yellowstone National Park, renowned for its geothermal features and volcanic history, is beginning to show signs of renewed ...

Yellowstone National Park's geological history is one of the most intensely studied in North America. A new geologic unit ...

Scientists are warning that glaciers melting due to global warming could trigger explosive and potentially deadly volcanic ...

From asteroids the size of football stadiums to nuclear war and man-made pandemics, it can seem as if humankind is in ...

Mount Etna's eruption and a nearby quake reignite questions on volcano-earthquake links, climate impact, and tectonic stress.

An Alaskan volcano that has been inactive for more than 100 years is showing signs of rumbling, according to scientists.

Learn about how volcanoes are formed and the ways they erupt Chiara Maria Petrone, Roberto Scandone, and Alex Whittaker On ...