The disappearance of flight MH370 is the greatest unsolved mystery in aviation. Ten years after the plane vanished from radar with 239 passengers and crew on board, only a few traces have been found. Could a new radio technology finally help locate the missing aircraft and give families the answers they desperately need?

James Reynolds assesses the latest evidence about what happened to MH370 with the BBC's South East Asia correspondent Jonathan Head and Alessandra Bonomolo, director of a new documentary on the disappearance of MH370 – Why Planes Vanish: The Hunt for MH370.

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This episode was made by Alice Aylett Roberts and Bethan Ashmead Latham. The technical producers were Matt Hewitt and Hannah Montgomery. The assistant editor is Sergi Forcada Freixas and the senior news editor is Jonathan Aspinwall.