Passengers wait at the airport in Hamburg, northern Germany, Wednesday, May 25, 2011, after flights were canceled due to elevated levels of ash in the atmosphere stemming from Iceland's Grimsvotn ... more 
Passengers wait at the airport in Hamburg, northern Germany, Wednesday, May 25, 2011, after flights were canceled due to elevated levels of ash in the atmosphere stemming from Iceland's Grimsvotn volcano. less 
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Associated Press | Photo By dapd, Philipp Guelland
Wed, May 25, 2011 3:36 AM EDT