Mon, 07/17/2023 - 13:18 Tech Insider InsiderOur bodies, machines, and buildings are emitting a lot of heat. Can we use it?Robyn Phelps/Insider Tags Science, News, Gains in Green Tech, One Planet, Heat, Climate Change, energy, waste, Recycling, Heating, Cities, Special Projects, op-featured, op-3 Source Our bodies, buildings, and computers give off a lot of waste heat. Cities and s…