"Charge Generation in Thunderclouds - Frequently Asked Questions (FAQ) about Lightning – Canadian Forest Service." Canadian Forest Service | Service Canadian Des Forest. Canadian Forrest Service, 18 May 2007. Web. 03 May 2011. <http://cfs.nrcan.gc.ca/index/lightning-faq/4>.
Dwyer, Joe. "How Lightning Works." Pbs.org. Public Broadcasting Service, 1 Oct. 2005. Web. 4 May 2011. <http://www.pbs.org/wgbh/nova/earth/how-lightning-works.html>.
"Lightning." Newton, Ask a Scientist! Newton. Web. 03 May 2011. <http://www.newton.dep.anl.gov/askasci/gen99/gen99190.htm>.
"Lightning & Thunderstorms." Electric Shock - We Will Shock You. Electric Shock. Web. 04 May 2011. <http://www.electricshock.org/lightning.html>.
"NWS JetStream - Lightning Frequently Asked Questions." National Weather Service Southern Region Homepage. National Weather Service, 8 Jan. 2010. Web. 03 May 2011. <http://www.srh.noaa.gov/jetstream/lightning/lightning_faq.htm>.
"How is Lightning Made?." NASA. N.p., 19 Aug. 2004. Web. 3 May 2011. <http://www.nasa.gov/audience/forstudents/k4/home/F_What_Causes_Lightning_Flash.html>.
Ferguson, Tom. Lightning with Tornado. 2010. Web. 13 May 2011. <http://deepthoughtsbytomferguson.blogspot.com/2010/05/cool-lightning-photos.html>.
Lightning to Cloud and Ground. Web. 13 May 2011. <http://www.solarnavigator.net/lightning.htm>.
Anvil Crawler. 1994. Weatherpix Stock Images. Web. 13 May 2011. <http://www.weatherpix.com/g2/v/Lightning/lightning.jpg.html>.
Lightning Strikes Far. 2009. Web. 25 May 2011. <http://scienceray.com/earth-sciences/meteorology/spectacular-lightning-strikes/>.
