Ash Cloud Forces Flight Cancellations

MELBOURNE, AUSTRALIA - JUNE 21: Passengers check a departure screen as airlines cancel flights due to volcanic ash at Melbourne Domestic Airport on June 21, 2011 in Melbourne, Australia. Air travel across the country is being disrupted again, as a result of volcanic ash cloud from Chile inundating Australian air space. Sydney, Adelaide, Canberra and Melbourne airports have been affected, with all major airlines announcing cancellations. It is expected Brisbane airport will next be affected as the cloud travels over the east of the country. (Photo by Quinn Rooney/Getty Images)