An image of Augustine erupting on January 13, 2006, from about 50 miles away from the volcano. Courtesy of Gerald Andrew When Mount St. Augustine in Alaska erupted in mid-January 2006 for the first ...

Volcanic lightning is a striking and multifaceted phenomenon that occurs during explosive eruptions, when vigorous interactions between fragmented ash particles, volcanic gases and environmental ...

When Alaska's Redoubt Volcano rumbled to life three years ago, researchers rushed to the scene to deploy radio sensors to catalog and map lightning within the plume. The readings, the team now reports ...

Triggered by lightning in thunderstorms, whistler waves are radio waves that are channelled thousands of kilometres around the world via ducts in the magnetosphere. As Ian Randall reports, these ...

MANILA — Philippine authorities have urged a "total evacuation" of nearly half a million people near the capital Manila after a volcano spewed ash up to nine miles into the air Sunday, prompting ...

August began with a burst of volcanic activity in Indonesia as Mount Lewotobi Laki-Laki erupted, sending ash miles into the sky. Part of the eruption unfolded at night, illuminating the darkness with ...

Mt. Lewotobi Laki-Laki, one of Indonesia’s most active volcanoes, erupted for a second consecutive day, sending a column of volcanic material and ash as much as 11 miles into the sky early Saturday ...