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A comment on You can have geothermal power everywhere if you drill deep enough. Parent comment

Re:You can have geothermal power everywhere if you drill dee... by axiolite on Saturday February 26, 2022 @03:30AM (#30476079)
"if we confine ourselves to the Earth’s surface, we exhaust solar potential in 400 years" -- https://dothemath.ucsd.edu/2011/07/galactic-scale-energy/

Equally interesting:

https://dothemath.ucsd.edu/2011/07/can-economic-growth-last/

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