MH370: A year without answers

Vanished. A year after Malaysian Airlines Flight 370 disappeared from radar screens en route to Beijing from Kuala Lumpur, search teams are still looking for the plane. No clues have emerged to clarify why the Boeing 777 kept flying for more than six hours after it slipped off the radar. At 19:30 GMT Thursday, The Stream asks aviation experts and relatives of the victims how long the search for answers should continue.