http://d.yimg.com/a/p/ap/20100415/ca...rijLAL.V1sEw--AP - An enormous ash cloud from a remote Icelandic volcano caused the biggest flight disruption since the 2001 terrorist attacks as it drifted over northern Europe and stranded travelers on six continents. Officials said it could take days for the skies to become safe again in one of aviation's most congested areas.
Source
