The hunt for missing Malaysia Airlines flight MH370 entered its fifth week on Saturday, no closer to an explanation for its disappearance.<br/> <br />The search planes and ships are still scouring the southern Indian Ocean<br/> <br />A device called the Towed Pinger Locator now seems the best hope for a breakthrough if they're in the right area.<br/> <br />It's being dragged through the water behind an Australian navy vessel trying to trace the missing plane's black box flight recorder.<br/> <br />It's a race against the clock.<br/> <br />The plane vanished on March 8th and the flight recorder only has power to send out location signals for about 30 days.<br/> <br />But aviation expert Geoffrey Thomas believes the search will be intensified as time goes on.<br/> <br />(SOUNDBITE)(English) GEOFFREY THOMAS, EDITOR OF AIRLINERATINGS.COM, SAYING:<br/> <br />"I think they're actually going to increase it. We shouldn't underestimate the will of the Australians and the will of the Chinese to find this aeroplane. We're talking abo
