6-Year-Old Boy Found Safe After Weather Balloon Floats Away
Thursday, October 15th, 2009 at
09:50
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One freezing day in February 2006, physicist Andreas Mershin huddled with others around a tree on the Massachusetts Institute of Technology campus to watch an unlikely demonstration. An engineering company claimed it could produce electricity simply by wiring a nail in the tree’s trunk to a metal rod in the ground. Sure enough, the demo worked—but nobody knew exactly why.

