Using radio equipment to hear the natural electromagentic waves radiating from just about anything in the atmosphere, Magnetosphere, insect world, periodic table, etc+

Not so natural, is the electromagnetic radiation leaking from most electronic equipment. see Van Eck

• below 22kHz http://www.vlf.it/
• Stephen McGreevy http://www-pw.physics.uiowa.edu/mcgreevy/ and here http://www.auroralchorus.com/
• wr-3 http://www.auroralchorus.com/wr3info.htm or http://www.qnet.com/~vlfradio/wr3.htm
• wr-3 listening guide http://www.qnet.com/~vlfradio/wr3gde.htm
• ElectromagneticSpectrum
• discussion » http://groups.yahoo.com/group/VLF_Group/
• stuff > https://hackaday.com/tag/vlf/

• number stations http://www.simonmason.karoo.net/page30.html