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    Societal Collapse


    A Living Literature Review
    • Nuclear war, nuclear winter, and the food system

      A contribution to the United Nations Scientific Panel on the Effects of Nuclear War

      Posted on 2026/02/11

      This post was originally an invited contribution to the United Nations Scientific Panel on the Effects of Nuclear War. I’m also sharing it here as an overview of the current state of nuclear winter research (+ related topics) and the open questions the field is grappling with. It was written... [Read More]
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    • Strong democracies are a necessity for crisis management

      Why crisis governance depends on democratic capacity

      Posted on 2026/02/02

      The proportion of the global population living under the spectrum of political systems classed as a democracy is near its all-time high, and stands (very approximately) around 4 billion, or around half of the global population. From a historical perspective, democracies have had quite the run over the last two... [Read More]
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      • Resilience
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    • The end of the fallout bunker

      In Germany, at least

      Posted on 2026/01/18

      Recently, I visited a cold war bunker near Saarbrücken. It was a test bunker for West Germany, where they could try out all their new, fancy ideas on how to make the best bunker. To keep it secret, they build it in parallel to a new highway and it is... [Read More]
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      • Resilience
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    • End time economics

      Supply and demand after global catastrophes

      Posted on 2026/01/07

      To better understand societal collapse we not only must examine the factors that could lead to collapse, but also what might happen during and after collapse. One crucial thing here is economics. What are the direct effects of collapse on an economy? How would prices change? Would trade continue? All... [Read More]
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    • Who shapes global risk?

      An overview of actors

      Posted on 2025/11/29

      Existential risk is not something static which lives outside of humanity. It is something humans shape. This can be directly, such as things that are created or deployed by humans like nuclear weapons. Or it can be indirectly, like whether or not humans have sufficiently prepared our infrastructure for major... [Read More]
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    Florian Ulrich Jehn  •  2026

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