An experimentator has used waste heat of his body to turn humans into batteries. Nick Zetta, who runs Basically Homeless YouTube channel, turned himself into a battery using thermoelectric generators.

Heat as power Radioisotope thermoelectric generators can turn heat into electricity using ... making them the most distant human-made objects ever. Even at these extreme distances, their RTGs are ...

These underground reservoirs of steam and hot water can be tapped to generate electricity or to heat and cool buildings directly. 4 min read Geothermal energy has been used for thousands of years ...