Already, according to Randall and Schwartz, the planet is carrying a higher population than it can sustain. By 2020 'catastrophic' shortages of water and energy supply will become increasingly harder to overcome, plunging the planet into war. They warn that 8,200 years ago climatic conditions brought widespread crop failure, famine, disease and mass migration of populations that could soon be repeated.
The skeptic in me, though, notes that they have been saying similar things since the time of Malthus, and that (as Steven Pinker pointed out) the imminent extinction of humanity appears to be a constant perceptual illusion resulting from a tendency to underestimate technological progress. Perhaps that's the case with this report as well, and we'll all survive in shantytowns in the Alps, living off vat-grown genetically-modified algae and/or Soylent Green. Or maybe this time, it's for real, and we're all, not to put too fine a point on it, fucked.
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