Some more established theories linking climate change to the adoption of farming are broadly based on the hypothesis that the slow transition from the last cold glacial period to the current warm, interglacial period, between 18,000 and 8,000 years ago, catalyzed a whole series of ecological changes that in turn created terrible hardships for some established hunter-gatherer populations. They suggest that necessity was the mother of invention and that foragers had little option but to experiment with new strategies to survive as familiar staples were replaced by new species.
