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Sources

• "Beyond Batteries: Storing Power in a Sheet of Paper." Rensselaer Polytechnic Institute. Aug. 13, 2007. http://news.rpi.edu/update.do?artcenterkey=2280
• "Blood, Sweat Could Power New Paper Battery." NPR. Aug. 27, 2007. http://www.npr.org/templates/story/story.php?storyId=13754475
• "Microrobots made from heart muscles." Roland Piquepaille's Technology Trends. Sept. 2, 2007. http://www.npr.org/templates/story/story.php?storyId=13754475
• "New fuel cell opens way for artificial hearts." Independent Online. March 13, 2005. http://www.int.iol.co.za/index.php?set_id=1&click_id=
  31&art_id=qw111596760144B215
• "Power from blood could lead to human 'batteries.'" The Sydney Morning Herald. Aug. 4, 2003. http://www.smh.com.au/articles/2003/08/03/1059849278131.html
• "Rennselaer University researchers develop nanotube-paper batteries powered by human sweat, blood, and even urine." Into Mobile. Aug. 14, 2007. http://www.intomobile.com/2007/08/14/rennselaer-university-researchers-
  develop-nanotube-paper-batteries-powered-by-
  human-sweat-blood-and-even-urine.html
• Bhattacharya, Shaoni. "Pee-powered battery smaller than a credit card." NewScientist.com. Aug. 15, 2005. http://www.newscientist.com/article.ns?id=dn7850
• Biever, Celeste. "Bio-battery runs on shots of vodka." NewScientist.com. March 24, 2003. http://www.newscientist.com/article.ns?id=dn3539