Science news articles about 'ash cloud'

PUERTO MONTT, Chile (Reuters) - A towering cloud of hot ash, gas and molten rock spewed miles into the air by a volcano in southern Chile has partially collapsed, raising fears ...

(AP) -- Alaska's Mount Redoubt has erupted twice, with the larger burst sending an ash cloud 65,000 feet into the air.

A newfound link between two of nature's most violent phenomena could explain how volcanic ash clouds can generate lightning and tornado-like dust devils and waterspouts.

Lightning crackled through an Alaska volcano's giant ash cloud, and an amateur photographer caught its fleeting fury. Meanwhile, scientists hope to solve a mystery with new "maps" of lighting inside ...