USA Today: Weather: Understanding Lightning
www.usatoday.com/weather/wlightn0.htm

Global Hydrology and Climate Center: A Lightning Primer
http://thunder.msfc.nasa.gov/primer/

The Franklin Institute Online: Bright Light Fright
http://sln.fi.edu/weather/lightning/lightning.html

National Geographic Society: Lightning: The Shocking Story
www.nationalgeographic.com/features/96/lightning/index.html

National Lightning Safety Institute
www.lightningsafety.com

National Weather Service: Lightning Information Center
www.srh.noaa.gov/mlb/ltgcenter/ltgmain.html

Texas A&M Meteorology Department: Lightning
www.met.tamu.edu/class/Metr304/Severedir/LightningDir/lightning.html

Weather Web: Lightning Network
http://weather.hypermart.net/lightning.html