Volcano in Iceland

Volcanic ash plume from Iceland, top left, to the north of Britain at received by NASA's Terra Satellite at 11:39 GMT on Thursday, April 15, 2010. Ash from Iceland's spewing volcano halted air traffic across a wide swathe of Europe on Thursday, grounding planes on a scale not seen since the 9/11 terror attacks.

Iceland Volcano Ash Upends Air Travel in Europe

Credit: AP Photo/NEODAAS/University of Dundee