Nearly five years ago, the doomed Malaysia Airlines Flight 370 vanished without a trace, with 239 people on board. The search in the Indian Ocean for the wreckage of the aircraft has been the largest and most expensive search effort in history — but it has turned up nothing.
Now, a team of researchers says Malaysia Airlines Flight 370 may have crashed thousands of miles from the search locations, based on sounds recorded in the ocean near the time the passenger jet disappeared on March 8, 2014.