Mysterious noise could be related to missing flight
Researchers in Australia released audio of a mysterious noise deep in the Indian Ocean.
They say it could be related to the disappearance of the missing Malaysia Airlines Flight 370.
The sound was recorded around the time the plane vanished.
Researchers have been digging into the very low-frequency sound for weeks to see if it might be the plane hitting the water or sinking.
Scientists say the sound's general location does not match previous information about the missing flight.