At Mount St. Helens, volcano monitoring and trail maintenance efforts are set to degrade without help from federal agencies.

Carlos Reyes-Couvertier spent the past quarter century trying to find his missing daughter. There were multiple trips to ...

An erupting Hawaii volcano once again began shooting fountains of lava that reached hundreds of feet high on Tuesday.

Guatemala's Volcano of Fire (Volcán de Fuego) erupted again on Monday, prompting authorities to evacuate nearly 300 families and warn that up to 30,000 people could be at risk. The eruption sent gas ...

Not all mountains in the Yellowstone region are volcanic in origin. The Wind River Range, southeast of Yellowstone National ...

Hawaii’s Kilauea volcano has erupted again, putting on a fiery spectacle with lava fountains reaching an astonishing 600 feet ...

The AP is solely responsible for all content. A volcano near Alaska's largest city is showing new signs of unrest, with ...

AP economics writer Christopher Rugaber and AP writer Kevin Freking contributed to this report. A volcano near Alaska's ...

The owners of an island volcano in New Zealand where 22 tourists and local guides died in an eruption had their criminal conviction for failing to keep visitors safe thrown out by a judge on Friday.

WELLINGTON, New Zealand (AP) — The owners of an island volcano in New Zealand where 22 tourists and local guides died in an eruption had their criminal conviction for failing to keep visitors ...