The idea that energy is a fundamental driver of societal progress has led to the concept that a civilization’s level of technological development can be measured by its ability to harness and use energy. Based on this, Russian astrophysicist Nikolai Kardashev devised a famous Kardashev Scale in 1964 as a way to classify civilizations based on their energy consumption. Our human civilization’s current level is estimated to be around 0.73 as of today according to this scale.
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Source: Phys.org