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![This electron micrograph shows a glassy fragment of volcanic ash found by the British Geological Survey in Loughborough, UK, on Tuesday. The particle is from the recent eruption of Eyjafjallajökull in Iceland, and clouds of similar flecks have been the cause of travel chaos across much of Europe. On Wednesday air regulators established tolerance levels for how much volcanic ash a jet engine can safely suck in. (Image: Courtesy of the British Geological Survey © NERC)
[via New Scientist]](http://25.media.tumblr.com/tumblr_l1cfv3rYTl1qa32ieo1_500.jpg)
This electron micrograph shows a glassy fragment of volcanic ash found by the British Geological Survey in Loughborough, UK, on Tuesday. The particle is from the recent eruption of Eyjafjallajökull in Iceland, and clouds of similar flecks have been the cause of travel chaos across much of Europe.
On Wednesday air regulators established tolerance levels for how much volcanic ash a jet engine can safely suck in.
(Image: Courtesy of the British Geological Survey © NERC)
[via New Scientist]
