The Arithmetic of Decarburization - Part 2: The Red Truth: Quantifying the Hidden Energy Appetite of Affluent Life
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The Baseline: Human Energy Needs # Before examining modern energy consumption, we should consider the baseline: how much energy does a human body actually need?
The answer is approximately 7 MJ per day (about 2,000 kcal), assuming moderate activity. This represents the absolute minimum energy throughput required for human survival.