Plane search \\\'most challenging ever\\\'

The search for missing Malaysia Airlines flight MH370 is the "most challenging" ever seen, the man responsible for co-ordinating the search from Australia says. Air Chief Marshal Angus Houston also said that the search for the plane could take weeks. The plane disappeared on 8 March as it was travelling from Kuala Lumpur to Beijing. It was carrying 239 people. Search teams are scouring the southern Indian Ocean for signs of the plane. On Tuesday, the Malaysian authorities released the full transcript of communications between flight MH370 and Kuala Lumpur's air traffic control. They said there was no indication of anything abnormal in the transcript, according to BBC.