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https://www.space.com/kardashev-scale
https://bigthink.com/13-8/kardashev-scale/
https://futurism.com/the-kardashev-scale-type-i-ii-iii-iv-v-civilization
https://energiainteligenteufjf.com.br/especial/the-kardashev-scale/
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https://vocal.media/humans/traces-of-a-type-ii-civilization-were-detected-by-scientists
https://www.inverse.com/science/kardashev-type-iii-civilizations