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.

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 ...

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, ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Here’s what you’ll learn when you read this story: A 2022 study determined that the plague known as the ...

A flea depicted in a digitally colorized microscope image. (CDC/Ken Gage / Smith Collection/Gado/Getty Images) When the Black Death swept through Europe beginning in 1347, the plague wiped out more ...

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 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 ...