human-powered flashlight, Tag
From a sleeping bag that charges your gadgets to entire buildings warmed by body heat, scientists are harvesting the heat emitted by humans as a source of renewable energy...
From a sleeping bag that charges your gadgets to entire buildings heated by body heat, scientists are harvesting the heat emitted by humans as a source of renewable energy...
From a sleeping bag that charges your gadgets to entire buildings that use body heat to run heating systems, scientists are harvesting the heat emitted by humans as a source of renewable energy...
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