] anuary 19, 2001 -- If humans had radio antennas instead
] of ears, we would hear a remarkable symphony of strange
] noises coming from our own planet. Scientists call them
] "tweeks," "whistlers" and "sferics." They sound like
] background music from a flamboyant science fiction film,
] but this is not science fiction. Earth's natural radio
] emissions are real and, although we're mostly unaware of
] them, they are around us all the time.
]
] "Everyone's terrestrial environment almost literally
] sings with radio waves at audio frequencies," says Dennis
] Gallagher, a space physicist at the Marshall Space Flight
] Center (MSFC). "Our ears can't detect radio waves
] directly, but we can convert them to sound waves with the
] aid of a very low frequency (VLF) radio receiver."

Earth Songs