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Untitled, 2012
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"Overpopulation, overconsumption by the rich and poor choices of technologies are major drivers; dramatic cultural change provides the main hope of averting calamity."
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"These are not separate problems; rather they interact in two gigantic complex adaptive systems: the biosphere system and the human socio-economic system. The negative manifestations of these interactions are often referred to as ‘the human predicament’ [10], and determining how to prevent it from generating a global collapse is perhaps the foremost challenge confronting humanity."
Can a collapse of global civilization be avoided? / Paul R. Ehrlich and Anne H. Ehrlich / 2012.
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Drought and unrest sparked global societal collapse in the Bronze Age. Is it happening again? / January 2016