Earth's magnetic field is singing. This is what it sounds like.

It sounds like the call of an extraterrestrial bird species, but the recording featured in the video up top (and the player, down below) is actually made by our very own planet. Scientists call the eerie sequence of quavering whooping sounds "chorus" — and this is one of the clearest examples of the phenomena NASA… »10/01/12 3:30pm10/01/12 3:30pm