http://image.gsfc.nasa.gov/poetry/sounds/sounds.html

http://www-pw.physics.uiowa.edu/plasma-wave/istp/polar/home.html

http://www-star.stanford.edu/~vlf/Science/Science.html

http://www.pulseplanet.com/archive/Mar03/2881.html

http://www.altair.org/natradio.html


http://science.nasa.gov/newhome/headlines/essd10jun99_1.htm