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² http://www.howitworksdaily.com/science/5-top-facts-about-atoms/

³ http://chemed.chem.purdue.edu/genchem/topicreview/bp/ch23/fission.php

⁴ http://www.epa.gov/cleanenergy/energy-and-you/affect/nuclear.html

⁵ http://www.nytimes.com/2007/11/06/science/06food.html?_r=0