this post was submitted on 09 Oct 2024

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Scientists Simulate Alien Civilizations, Find They Keep Dying From Climate Change (futurism.com)

submitted 2 months ago by Espiritdescali to c/futurology

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[–] YeetPics@mander.xyz -4 points 2 months ago (1 children)

Nothing in the universe has an efficiency over 100%.

[–] CanadaPlus@lemmy.sdf.org 6 points 2 months ago* (last edited 2 months ago)

Depends how you define it. Heat exchangers do, because it's defined for them in terms of heat moved per heat generated. All conservation laws are still respected.