Not neccesarily bushcraft, but interesting idea, esp the making electricity bit
http://news.bbc.co.uk/1/hi/northern_ireland/6225175.stm
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http://www.upenn.edu/pennnews/current/2005/102005/research.html
http://news.bbc.co.uk/1/hi/northern_ireland/6225175.stm
&
http://www.upenn.edu/pennnews/current/2005/102005/research.html