Ash clouds are made of tiny particles that were lofted into the atmosphere from a volcanic eruption and can have a huge impact, even thousands of miles from the eruption.

When volcanoes like Alaska’s Mount Spurr erupt, the ash can damage people’s lungs, smother crops and kill animals, and the ...

When a large volcano erupts, as Mount Spurr appears close to doing about 80 miles from Anchorage, Alaska, it can ...

When the Kīlauea Volcano erupted in May 2018, an enormous amount of ash was released into the atmosphere in a plume nearly ...

Ash from the 1912 Novarupta eruption periodically hits the west side of Kodiak Island, Larsen Bay and Karluk, roughly 65 ...

Scientists have found previously undocumented ash deposits buried beneath the Lava Creek Tuff in Wyoming — and at least one ...

The 2018 eruption of Kilauea on Hawaii island sparked the largest open-ocean phytoplankton bloom ever recorded in the North ...

The area around Kanlaon Volcano in the Philippines was still under evacuation orders from an eruption in December​.

The recent hours-long ash emissions and minor explosive eruptions at Mt Kanlaon are all indications that the volcano is ...

One of the Philippines' most active volcanoes has erupted, releasing an ash plume that reached four kilometres into the sky.

A restive Philippine volcano briefly erupted Tuesday on a central island, sending a 4-kilometer (2.4-mile) plume of ash and ...