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 a volcano erupts, it’s usually the bright orange lava that’s the star of the show, however, ash clouds can be just as impressive. Ash clouds are made up of fine particles of rock ...

closed since March 28 due to prior volcanic activity, and issued a green alert for surrounding cantons. Authorities advised residents to wear N95 masks and limit outdoor exposure to protect against ...

When Spurr last erupted in 1992, the city was blanketed in approximately an eighth of an inch of ash that shut down the Ted Stevens Anchorage International Airport. Volcanic ash can trigger asthma ...

In the past few months, volcanic ash has been identified more frequently in the Whakaari/White Island steam and gas plume. Evidence of intermittent explosive activity has also been observed during ...

Jan. 10, 2025 — A new study based on the sampling and analysis of volcanic ash at Cumbre Vieja volcano in the Canary Islands, located off Africa's northwest coast, suggests that the composition ...

Volcanoes inspire awe with spectacular eruptions and incandescent rivers of lava, but often their deadliest hazard is what ...

which spread volcanic ash as far as Japan. It also created the spectacular Lake Chon, a crater lake located about 7,200 feet above sea level. The crater lake surrounded by Mount Paektu UNESCO ...

U.S. Rep. Ed Case addresses Attorney General William Barr during testimony before the House Appropriation subcommittee on Commerce, Justice, Science, and Related Agencies on Capitol Hill on April ...