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

Book review “They poisoned the world: Life & death in the age of Forever Chemicals”

Preface. This is a book review of Blake’s 2025 They Poisoned the World: Life & Death in the Age of Forever Chemicals. This is a history of how the existential threat of PFAs and other forever chemicals came to be. … Continue reading

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John Howe on one child per woman: still too high to stay under limits to growth curves

                      Preface. I first published this post in 2012 and have updated it today. Below I summarize a part of a 2012 article by John Howe on having one child … Continue reading

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Legal & Illegal Immigration numbers must drop to carrying capacity

Source: The Overpopulation Project (2020) Is overpopulation a dirty word?  Too many people consuming too much Preface. Without fossil fuels, the carrying capacity of the planet would be around 300 million people. Fossil fuels made it possible for human population to … Continue reading

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Palm Oil biofuels destroy rain forests

Preface. This is a book review of “Planet Palm: How Palm Oil Ended Up in Everything-and Endangered the World.”  I am mainly interested in the use of palm oil for biofuels, but it also harms health, which much of the … Continue reading

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Why carbon capture contraptions are absurd

Preface.  At the first USA peak oil conference in Denver (ASPO 2005), many of the attendees speculated renewable energy would be the last chance for Wall Street to make money from government subsidies and “dumb money” investors before limits to … Continue reading

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Egads! An unfair distribution of wealth is good for the climate

Preface. Good grief!!! I never thought I would write a post with that title. I am pro Democracy, pro fair distribution of wealth!  As you can see at posts here. But it has occurred to me that if if everyone … Continue reading

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Government of Canada: Disruptions coming!

Preface. Just in case you do not have enough worries, the Government of Canada has stepped in to help you out with potential future catastrophes. And there are dozens, perhaps a new one to add to your list, such as: People … Continue reading

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Peak food production happened, how will we feed 2-3 billion more?

Preface. Also see related article Limits to Growth? 2016 United Nations report provides best evidence yet. Nichols (2015) below shows that climate change is already affecting harvests of the world’s top 10 crops that comprise 83% of our calories: barley, … Continue reading

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The only congressional hearing on Peak Oil was in 2005

Preface. This U.S. House hearing happened 20 years ago, but it is still a good introduction to why oil is so important to society. At this hearing scientific experts spoke, warning that we will reach peak oil within decades (which … Continue reading

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Tom Murphy Stubborn Expectations (on population)

U.N.Total fertility rate projections Preface. Tom Murphy has one of the best blogs on limits to growth, energy resources and more in his blog Do The Math. He is a professor emeritus of the departments of Physics and Astronomy & … Continue reading

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