By Cory Doctorow at 12:22 pm Wed, Jul 3, 2013
Alan sez, "Ann Makosinski, a Canadian girl scientist, describes her Google Science Fair submission: an LED flashlight that runs solely on the heat of the human hand. According to the GSF site she is one of 15 worldwide finalists at this point.
The Hollow (Thermoelectric) Flashlight - Google Science Fair
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