How cool would it be to hike in the woods and not worry about batteries? Pretty sweet I'd say. U.S researchers created this backpack that generates power while you are walking; the up and down motion of your hips. It actually produces about 7 watts of electricity, enough to power a GPS unit or even your cell phone. So if your ever in a bind and need to call for help, this backpack could save the day.
Power Backpack
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