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2. History Channel Web site. "Life After People: Chernobyl." 2008. (Aug. 21, 2008) http://www.history.com/minisite.do?content_type=Minisite_Generic&content_type_id=57785&display_order=6&mini_id=57517
3. Horton, Jennifer. "What is the worst environmental disaster in history?" HowStuffWorks.com. April 21, 2008. (Aug. 21, 2008) http://science.howstuffworks.com/environmental-disaster.htm
4. Hvistendahl, Mara. "Coal ash is more radioactive than nuclear waste." Scientific American. Dec. 13, 2007. (Aug. 27, 2008) http://www.sciam.com/article.cfm?id=coal-ash-is-more-radioactive-than-nuclear-waste
5. The Nuclear Energy Institute (NEI). "Nuclear Waste: Amounts and On-site Storage." 2008. (Aug. 27, 2008) http://www.nei.org/resourcesandstats/nuclear_statistics/nuclearwasteamountsandonsitestorage/
6. The Nuclear Energy Institute (NEI). "Resources & Stats." 2008. (Aug. 15, 2008) http://www.nei.org/resourcesandstats/
7. The Harnessed Atom
, Teacher's Edition, U.S. Department of Energy.