Jürgen Scheffran, Professor for Climate Change and Security at the University of Hamburg and his colleagues evaluated 27 studies and found that 16 were statistically significant in showing that global warming increased the probability of violent conflict, but that 11 studies said they could actually have the opposite effect, i.e. decrease the likelihood of violent conflict. Eight of these papers were not even considered by Hsiang and his colleagues, Scheffran says.
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Finally Sociology Professor Nico Stehr and Hans von Storch also told Spiegel that the worst error in the Hsiang study was that it ignores man’s ability to adapt to weather and climate events. Hans von Storch says “they falsely assume that man’s reaction to climatic stimulations would be unchanged“. Another expert reminds us that man will be even better equipped in the future to adapt to changes than we are today.