The finest particles pose the greatest risk because they can penetrate deep into the lungs and cause death by asphyxiation in the worst cases. Mild, short-term symptoms often resolve with rest.

Mount Spurr volcano, near Anchorage, Alaska, is showing increased activity. Scientists have detected a swarm of earthquakes ...

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

At least 55 earthquakes have been recorded in the last week and there are increasing fears Mount Spurr could be set to erupt, ...

From how ashfall smells to how you can help affected wildlife, we asked experts across the state about the things on your ...

Residents of Alaska's largest town are 'getting ready for a volcanic eruption', after a scientist warned that it could be ...

When Mount Spurr erupted in 1992, ash spewed some 50,000 feet into the air and blanketed much of the Matanuska-Susitna Valley ...

When Mount Spurr last erupted, some light ashfall reportedly made its way to Juneau and airlines grounded flights for about a ...

Residents in Anchorage, Alaska, prepare for a possible Mount Spurr volcano eruption as scientists warn of rising seismic ...

Dozens of earthquakes have shaken the ground near the 11,000-meter-high megavolcano in Alaska, which experts fear is "close to erupting." ...

Officials say the increased seismic activity is a sign magma is rising beneath Mount Spurr, causing stress and cracking in the surrounding rock, leading to earthquakes. Emergency plans have ...