Discover Arizona parks, lakes, canyons, and historic sites that offer scenic trails, quiet escapes, and unforgettable desert ...

Beat the summer heat by going underground. Arizona is home to famous caves, like Kartchner Caverns. Here are 5 of the best ...

The 1980 Mount St. Helens eruption remains the deadliest in U.S. history, fundamentally changing how scientists monitor ...

There’s a whole other Arizona hiding beneath your feet, and most people drive right past it without ever knowing it exists.

For more than 100,000 years, a Greek volcano lay silent. But deep underground, it was still growing. Tiny zircon crystals show magma was quietly brewing between eruptions, researchers report April 22 ...

A volcano in Russia's far east on Wednesday spewed ash several kilometers into the sky, authorities said, putting on a spectacular display in its latest eruption. The Shiveluch volcano is one of the ...

An active underwater volcano off the Oregon Coast that was predicted to erupt in 2025 is now expected to erupt mid-to-late 2026. The Axial Seamount volcano is located nearly a mile beneath the sea, ...

For centuries, the prevailing explanation of how the Black Death entered medieval Europe was a simple narrative of biological warfare. During a siege of Caffa, a Genoa-controlled port city on the ...

The Hayli Gubbi volcano in the rural northeast of Ethiopia erupted November 23. Afar Communication Bureau via Facebook A volcano in northern Ethiopia erupted Sunday, marking its first known eruption ...

The next global volcanic disaster is more likely to come from volcanoes that appear dormant and are barely monitored than from the likes of famous volcanoes such as Etna in Sicily or Yellowstone in ...

A long-quiet volcano in Ethiopia spewed ash nine miles into the sky on Sunday, marking the first known major eruption from this volcano for more than 12,000 years. Under-studied and situated in ...