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SPECIAL MENTION: Batteries are ubiquitous and often end up in kids’ stomachs, where they can cause devastating injuries. Now, researchers at the Italian Institute of Technology in Milan have developed a small, rechargeable battery that’s also entirely edible. Supplying enough juice to power a small LED device for more than 10 minutes, not only could it reduce the number of child battery injuries, it could one day be instrumental in medical devices that are embedded in the body.
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