Volcanic ash cloud disrupts South America flights

A vast cloud of ash spewing from a Chilean volcano disrupted air travel across much of South America, while heavy rains around the eruption site prompted fears of mudslides.

Bizarre rock 'ice shelf' found in Pacific

A huge cluster of floating volcanic rocks covering almost 26,000 square kilometres (10,000 square miles) has been found drifting in the Pacific, the New Zealand navy said Friday.

Volcanic lightning recreated in the lab

An LMU team has, for the first time, created volcanic lightning in the lab and captured it on film. The new findings may permit rapid characterization of ash clouds released by volcanic eruptions and improve forecasting of ...

Iceland's Katla volcano is getting restless

(AP) -- If Iceland's air-traffic paralyzing volcanic eruption last year seemed catastrophic, just wait for the sequel. That's what some experts are saying as they nervously watch rumblings beneath a much more powerful Icelandic ...

Satellites track Mt Merapi volcanic ash clouds

Since its latest series of deadly eruptions, Java’s Mt Merapi has been spewing volcanic ash clouds into the air. Satellite data are crucial for assessing the eruption’s danger to air traffic and public safety. ...

How atmospheric rivers form

If you want to assign blame on an overcast day, then cast your eyes on the tropics. Water vapor originating from the Earth's tropics is transported to midlatitudes on long filaments of flowing air that intermittently travel ...

Noctilucent clouds get an early start

Every summer, something strange and wonderful happens high above the north pole. Ice crystals begin to cling to the smoky remains of meteors, forming electric-blue clouds with tendrils that ripple hypnotically against the ...

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