How Many Earths?
Posted on May 16, 2008
It's a standard trope in environmental commentary: we would need more than one Earth to support the planet's population, especially if everyone lived like Americans. The number of Earths needed can vary greatly, depending upon who's doing the counting. 1.2? Two? Three? Five? Ten? It's a very fuzzy form of ecological accounting, much harder to calculate in any consistent and plausible way than (for example) carbon footprints. But the N Earths concept is dubious for reasons beyond simple accounting imprecision. Simply put, it's adding together the wrong things.Assertions that we'd need three (...
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Tags:
renewable , solar , solar energy default explanation
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