Effect of Atmospheric CO2 Concentrations on Early Human Societies

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Guest essay by Don Healy During the past 100,000 years, human societies have witnessed the vast change in climate that has occurred as we have transitioned from a glacial period that ended about 20,000 years ago, into the current interglacial period. During the early stages of this period, human lived as hunter/gatherers, relying on a […]

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March 24, 2017 at 03:36AM