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

submitted 1 week ago by [email protected] to c/[email protected]

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[–] [email protected] 0 points 1 week ago (1 children)

Nothing in the universe has an efficiency over 100%.

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[–] [email protected] 0 points 1 week ago* (last edited 1 week 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.

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