Earth System

Global Polycrisis: The Causal Mechanisms of Crisis Entanglement

The authors translate polycrisis from a loose concept into a research agenda by providing the concept with a substantive definition, highlighting its value-added in comparison to related concepts, and developing a theoretical framework to explain the causal mechanisms currently entangling many of the world’s crises. In this framework, a global crisis arises when one or […]

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The Global Polycrisis Reflects a Civilizational Crisis that Calls for Systemic Alternatives

Zack Walsh argues that the current level of globalization, number of systemic risks, and continued depletion of the Earth’s resources will generate some sort of societal collapse. He details these systemic risks, defines polycrisis and existential risk, and discusses the distressing impacts of climate change on our global trajectory. “Current forecasts suggest that unless we

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The Fundamental Issue – Overshoot

Interviewed by Nate Hagens, William E. Rees argues that overshoot is a fundamental issue underlying all environmental problems. Our economy is premised on unlimited growth but the global human ecological footprint exceeds by 100% the biocapacity of Earth, and we are reaching a tipping point where nature will restore balance. He thus argues we must

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An Inconvenient Apocalypse: Environmental Collapse, Climate Crisis, and the Fate of Humanity

Wes Jackson and Robert Jensen confront the ecological and social crises shaping humanity’s future, arguing that survival depends on contraction rather than expansion. They explore how geographic determinism has influenced history, leading to social injustice, consumerism, and high-energy dystopias. The authors propose a realistic, collective path forward, grounded in secular interpretations of theological concepts, to

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Replacing Sustainable Development: Potential Frameworks for International Cooperation in an Era of Increasing Crises and Disasters

Reviewing international cooperation on social and environmental change, and particularly the failure to achieve the Sustainable Development Goals, Jem Bendell argues that the Sustainable Development framework is unable to address the increasing crises and disasters faced by the world today. As an alternative, he proposes an upgraded form of Disaster Risk Management that is detached

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Global Catastrophic Risks 2022: A Year of Colliding Consequences

The report provides an overview of several catastrophic risks that are potentially global in scope: weapons of mass destruction, pandemics, artificial intelligence, asteroids, climate change, super-volcanic eruptions, ecological collapse, population growth, and climate tipping points. For each risk, it explores the key factors that affect the risk levels and the extant governance frameworks that address

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Interacting Tipping Elements Increase Risk of Climate Domino Effects under Global Warming

The authors use Boolean and dynamic network models to investigate how the the interactions of climate tipping elements (Greenland Ice Sheet, West Antarctic Ice Sheet, Atlantic Meridional Overturning Circulation (AMOC), El Niño-Southern Oscillation, and Amazon rainforest) could produce domino effects (or tipping cascades) across other tipping elements. They find that tipping points in the Greenland

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Anatomy and Resilience of the Global Production Ecosystem

The authors argue that the worldwide production and distribution of food, fuel, and fibre has created a “global production ecosystem” subject to immense simplification, intensification, and control by humans attempting to maximize efficiency. The resulting system is homogenous, highly connected, and has weak feedbacks – “features [that] converge to yield high and predictable supplies of

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Trajectories of the Earth System in the Anthropocene

The paper proposes that reinforcing feedbacks could push the earth system toward a planetary threshold past which lies an irreversible “Hothouse Earth” scenario that catastrophically disrupts ecosystems, societies, and economies. The authors suggest that a deep transformation based on a fundamental reorientation of human values and operating systems is necessary, as well as resilience-building strategies

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