Environmental problems have contributed to numerous collapses of civilizations in the past. Now, for the first time, a global collapse appears likely. Overpopulation, overconsumption by the rich and poor choices of technologies are major drivers; dramatic cultural change provides the main hope of averting calamity.
Source: Paul R. Ehrlich and Anne H. Ehrlich, Can a collapse of global civilization be avoided? Proc. R. Soc. B vol. 280 no. 1754 , 20122845 (2013). Open access full text:
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