Report (from Proceedings of the National Academy of Sciences): “Results show that cooling from A.D. 1560–1660 caused successive agro-ecological, socioeconomic, and demographic catastrophes, leading to the General Crisis of the Seventeenth Century. We identified a set of causal linkages between climate change and human crisis. Using temperature data and climate-driven economic variables, we simulated the alternation of defined “golden” and “dark” ages in Europe and the Northern Hemisphere during the past millennium. Our findings indicate that climate change was the ultimate cause, and climate-driven economic downturn was the direct cause, of large-scale human crises in preindustrial Europe and the Northern Hemisphere.”
My Comment: We forget about it in the light of the economic crisis, but the irreversible climate change that threatens our existence has been taking place for a long time already. It is irreversible because we can no longer reduce it using ordinary methods. However, if we transform our nature, climatic conditions will change for the better, towards balance.