alt Hacker Newshttps://agupubs.onlinelibrary.wiley.com/doi/10.1029/2008EO28...
Waste heat from human energy use is a real problem, it does influence Earth's temperature, minimally for now, but it will only grow. And it will be MUCH harder to solve than global warming.
If we tame fusion at scale this could become an actual issue in the far future. As it stands we have nothing that can out-scale solar or wind. Fission maybe if we went all in on breeders and stuff but that would not be cost competitive with renewables plus batteries. Breeder cycle fission is complex and expensive.
Hopefully if we get really good at fusion we will go LARP The Expanse with it instead of boiling the ocean.