this post was submitted on 31 Jul 2023
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Arthur C. Clarke wrote a sequel to the sequel to the sequel of 2001 (called 3001) where Frank Poole is rescued a thousand years after been lost in orbit around Jupiter/Saturn. By then global warming isn't caused by carbon dioxide or methane or even water vapor. It's from 1,000+ years of waste heat generated by each human that's ever lived. Even with 100% clean energy, everything still creates heat, and it has to go somewhere.
But it does. Heat does radiate into space, just not necessarily enough to overcome what's trapped in the atmosphere. If we cut out other sources then generations of humans would be negligible.