Comments by "Helium Road" (@RCAvhstape) on "Technology Connections"
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In reality heating and air conditioning both heat the whole neighborhood by burning energy. Whether your energy source is coal, gas, nuclear fission, or even someday nuclear fusion, there is waste heat generated all along the circuit starting at the generating plant. It's a problem for the future if fusion becomes cheap and easy someday, because while pollution, carbon output, and cost will drop immensely, civilization demand will go up and our main problem becomes dealing with waste heat. Arthur C. Clarke mentions this in 3001: Final Odyssey novel, but he doesn't say how the problem was overcome, presumably because he had no idea.
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