I met a man in Kotzebue who told me he was sure it is possible to hear the sound of the aurora borealis.  He said you had to wait for a night when the air was perfectly still and you had to take yourself far out where there were no other sounds whatsoever. The kind of quiet he said where you are suddenly aware of the sound of your heart beating and then as the light descends toward you you can hear it crackling through the atmosphere.