Category Archives: Polycrisis

Google AI: A polycrisis is a single situation where multiple, distinct global crises occur simultaneously and interact in ways that amplify each other, making the overall damage significantly worse than the sum of its individual parts. Instead of dealing with isolated, sequential emergencies, a polycrisis features intersecting networks of stress across economic, geopolitical, ecological, and technological systems.
Core Characteristics
Causal Entanglement: A crisis in one system (e.g., a geopolitical conflict) directly triggers or worsens a crisis in another system (e.g., energy prices and global food supply chains).
Feedback Loops: The compounding effects bounce back and forth between systems, creating highly volatile and unpredictable domino effects.
Systemic Overwhelm: Because the crises are deeply linked, they cannot be successfully resolved one at a time, frequently paralyzing traditional governance and risk-management strategies

Why and how Jellyfish are taking over the world

Posted on March 19, 2019 by

Preface.  The more climate change kicks in, the more we over-fish, pollute, acidify and warm the ocean, create vast dead zones, and trawl ocean bottoms, the better the jellyfish do. It is quite possible that the ocean ecosystem will shift … Continue reading →

Posted in Books, Extinction Books, Fisheries, Jellyfish, Peak Food | Tagged , , | 4 Comments

Book review of Dirt: the erosion of civilization

Posted on March 16, 2019 by

Preface. On average civilizations collapsed after 800 to 2,000 years because they’d destroyed their topsoil, some of it caused by deforestation to grow more food, make metals, ceramics, glass and other objects requiring high heat, which fossils provide today. Today, … Continue reading →

Posted in Agriculture, Peak Food, Soil | Tagged , , , , | 4 Comments

Earthquakes in California could cost over $200 billion dollars

Posted on February 14, 2019 by

Preface. The figures below don’t do justice to the harm an earthquake would do.  There is $1.9 trillion dollars of property at risk from earthquakes in the San Francisco Bay Area, where a catastrophic earthquake on the Hayward Fault would … Continue reading →

Posted in Earthquakes, U.S. Congress Infrastructure | Tagged , , , | 4 Comments

Vaclav Smil. Making the modern world: materials and dematerialization

Posted on January 30, 2019 by

Preface.  I can’t believe I read this book, it is just a long litany of the  gigantic amounts of materials we exploit, with no analysis, implications, or the meaning of what impact this will have on the planet. I certainly … Continue reading →

Posted in Infrastructure Books, Life Before Oil, Limits To Growth, Peak Resources, Vaclav Smil | Tagged , , | 9 Comments

Science magazine on Peak Sand 2017 and 2018

Posted on January 18, 2019 by

[ Sand is essential to make concrete, glass, silicon for computer chips, and many other products (longer list in Peak Sand), so no wonder top journal “Science” has had two articles on this topic. Sand mining also ruins ecosystems, lessens … Continue reading →

Posted in Peak Sand, Tsunami | Tagged , , , , | 4 Comments

Lakes run dry from too much water extraction and climate change

Posted on January 8, 2019 by

Preface.   I think that declining oil will be the main cause of civilization to collapse, since it is the energy that makes all other activities possible, but there are so many other contenders I wonder if scholars in the future … Continue reading →

Posted in Air, Drought & Collapse, Overpopulation, Peak Water, Water Infrastructure | Tagged , , , | Comments Off on Lakes run dry from too much water extraction and climate change

Deep-sea trawling harms biodiversity and carbon storage

Posted on January 5, 2019 by

Preface. Overfishing has eliminated 90% of the world’s large predatory fishes and is devastating marine ecosystems. Bottom trawling is one of the most devastating ways our oceans are being overfished, degraded and biodiversity destroyed .  This industry tossed 437 million … Continue reading →

Posted in Biodiversity, Climate Change, Fisheries, Fishery destruction, Peak Food | Tagged , , , | Comments Off on Deep-sea trawling harms biodiversity and carbon storage

75% of Earth’s land is degraded threatening 3.2 billion people

Posted on December 1, 2018 by

  Preface. By 2050 95% of Earth’s land could be degraded and reducing or even preventing food production, forcing hundreds of millions to migrate. More than 75% of our planet has been altered by humans, a figure that will likely … Continue reading →

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Fresh water depletion, contamination, saltwater intrusion, & subsidence

Posted on November 7, 2018 by

Map of the U.S. showing cumulative groundwater depletion from 1900 through 2008 in 40 aquifers. Source: Groundwater Depletion in the United States (1900-2008), USGS Scientific Investigations Report 2013-5079. Preface.  This isn’t mentioned in the subsidence paper below, but half of USA … Continue reading →

Posted in Groundwater, Peak Water, Water Infrastructure, Water Pollution | Tagged , , , , , , , | Comments Off on Fresh water depletion, contamination, saltwater intrusion, & subsidence

Toxic textiles: the lethal history of Rayon

Posted on October 24, 2018 by

Preface. This is a book review from Science magazine of Paul David Blanc’s 2016 book “Fake Silk The Lethal History of Viscose Rayon”, Yale University Press.  I’ve shortened the review and changed some of the text. This book exposes how … Continue reading →

Posted in Chemicals | Tagged , , | Comments Off on Toxic textiles: the lethal history of Rayon