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Alaska volcano shoots ash 15,000 feet into the air

One of Alaska's most restless volcanoes shot an ash cloud 15,000 feet into the air Friday in an ongoing eruption that is visible for miles when the weather allows.Full story

UK budget airline to test ash cloud detector

A U.K. budget airline will create an artificial volcanic ash cloud over Europe this summer to test ash detection technology. The experiment aims to avoid the kind of chaos that paralyzed air traffic during eruptions three years ago. Full story

If it's not blue, why is it a 'blue moon?'

The next blue moon will occur on the last night of August. Although it will appear no bluer than on any other night, it will nonetheless fit the modern definition of the term by being the second full moon in a calendar month. But this technical meaning of "blue moon" arose fairly recently. The phras Full story

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Related Photos

A woman cleans a sidewalk covered with volcanic ash in Santa Lucia Cotzumalguapa
A woman cleans a sidewalk covered with volcanic ash in Santa Lucia Cotzumalguapa

A woman cleans a sidewalk covered with volcanic ash in Santa Lucia Cotzumalguapa, south of Guatemala City, Sept. 14.

A car is covered with volcanic ash in Santa Lucia Cotzumalguapa
A car is covered with volcanic ash in Santa Lucia Cotzumalguapa

A car sits covered with volcanic ash in Santa Lucia Cotzumalguapa, south of Guatemala City, Sept. 14.