Scientists produce densest artificial ionospheric plasma clouds

U.S. Naval Research Laboratory research physicists and engineers from the Plasma Physics Division, working at the High-frequency Active Auroral Research Program (HAARP) transmitter facility, Gakona, Alaska, successfully produced ...

Guatemala's Fuego volcano erupts again

Guatemala's deadly Fuego volcano erupted anew early Friday, unleashing a 600-meter flow of lava and sending clouds of ash spiralling into the sky.

Dust storms in Africa affect US and the Caribbean's air quality

You might find it hard to believe that dust clouds from the African Sahara can travel thousands of miles across the Atlantic Ocean, but it does every year and in large quantities. In a recent study, Joseph Prospero, professor ...

New study estimates frequency of volcanic eruptions

Holidaymakers concerned about fresh volcanic eruptions causing flight-disrupting ash clouds might be reassured by a study setting out the first reliable estimates of their frequency.

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