flashlight human-powered-YouTubeThanks to social media’s love of science fair winners, we are hearing more stories these days about teenagers inventing marvelous machines and making scientific breakthroughs. President Obama loves these stories too. He hosted the first ever White House science fair in 2010 and posted a video with highlights.

Even in the realm of cancer research, teens have displayed their brilliance. A 15-year-old Maryland teen, Jack Andraka, won the top prize at the 2012 Intel Science Fair for his new and simple dip-stick method to detect pancreatic, lung and ovarian cancer, which is 90% accurate and 28 times less expensive.

This year, one of the top 15 finalists in the Google Science Fair, a 15-year-old Canadian girl, has invented a thermo-electric flashlight that is powered solely from the heat in your hand.

(WATCH her demonstration below or READ the story in Extreme Tech)

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