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A Year in Crises

Tim Sahay surveys the many crises covered in The Polycrisis newsletter over the last year and identifies four key shifts: northern countries are increasingly concerned with their own economic resilience but have not reformed the international financial system, so the global south remains increasingly vulnerable and disadvantaged; the past two years have witnessed more violent […]

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Why the World Feels so Unstable Right Now

Tim Palmer discusses the challenges of predicting events in nonlinear systems that, by nature, experience intermittent instabilities, as in the famous “butterfly effect”. Today, continued emissions are increasing the instabilities and uncertainties of climate change, while the economy and global health exhibit similar non-linearities. To deal with such uncertainties, he advocates ensemble prediction systems that

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