Human communication is caught in either the aural (doesn't go that far), the radio (goes a long, long way), the visual (smoke signals, goes for light years), and perhaps other modes not yet developed.
Cell phone, wi-fi, short wave, TV, and other frequencies in the electromagnetic are banned in the National radio free zone [1] because the world's largest movable structure (which is a radio telescope) is located in the zone. [2]
The news has recently carried reports of individuals who suffer from Electro Magnetic Allergy - not on the medical "proven" lists, but I believe we must be able to sense magnetic fields and science just hasn't caught up yet.
This site isn't so far away from Ohio!
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Links:
[1] http://en.wikipedia.org/wiki/United_States_National_Radio_Quiet_Zone
[2] http://en.wikipedia.org/wiki/National_Radio_Astronomy_Observatory
[3] http://li326-157.members.linode.com/system/files/nATIONA_RADIOgbtbluejpg2.jpg