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15-Year-Old Develops Flashlight Powered by Body Heat, Wins Top Prize in Google Science Fair - Do It Yourself
Here’s a little known fact: The human body, at any given moment, produces energy equivalent to a 100 watt light bulb. In that sense, we’re always wasting our energy—energy that can be used to, well, power a light bulb. It’s this line of thinking that led a 16 year old to invent the first flashlight powered entirely …