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February 26, 2006 1:59 PM Subscribe
How much life can our planet sustain?
posted by jammer to science & nature (26 answers total)
Or, rather, how much human life?
My girlfriend asked me this today, and I've no idea where to even begin a back of the envelope calculation. Assuming that 25% of the people on earth live in 1st world countries, and the rest consume resources as third worlders... how many human lives can our planet support?
I'm pretty sure agriculture would be the limiting factor, given that the population density of the livable portion of the earth's surface is pretty low. I don't think we're going to run out of room any time soon. Am I right in thinking food is what will run out first? How much can we make?
P.S. No, we are not high.