Category Archives: Experts

experts in energy, ecology, collapse, carrying capacity, biophysical and neoclassical economics, etc.

Paul Chefurka: More thoughts on Sustainability

Posted on March 8, 2020 by

The critical feature of sustainability isn’t how many people can be supported by the planet at any given moment in time. Rather, it is the number of humans that could live here without irreparably damaging the biosphere we depend on … Continue reading →

Posted in Paul Chefurka | Tagged | 4 Comments

Charles Hall: politicians and economy do best when oil is cheap

Posted on February 19, 2020 by

Preface. Politicians claim credit for a good economy, but what makes an economy prosperous? Cheap oil. During Trump’s reign “relatively cheap oil and gas are keeping the U.S. economy strong. But this cheap oil and gas is being partially subsidized … Continue reading →

Posted in Charles A. S. Hall | Tagged , , , | 2 Comments

William Rees: Memo from a Climate Crisis Realist: The Choice before Us

Posted on February 4, 2020 by

Preface. I’m going to put Rees’ conclusion of 11 things to do first (rather than the Green New Deal, which can’t possibly work), followed by his arguments for why this needs to be done (if you haven’t read part 1 … Continue reading →

Posted in Climate Change, Expert Advice, Experts | Tagged , , , | 5 Comments

William E. Rees: Don’t Call Me a Pessimist on Climate Change. I Am a Realist

Posted on February 1, 2020 by

Preface. William E. Rees is professor emeritus of human ecology and ecological economics at the University of British Columbia. He’s one of my favorite ecological writers and has written about energy, limits to growth, overshoot, sustainability and other ecological topics … Continue reading →

Posted in William Rees | Tagged , , , | 5 Comments

When wood is again our main energy source, how long will it last?

Posted on January 23, 2020 by

Preface.  Just when civilization is decades from returning to wood as the main energy source (due to peak oil in 2018), climate change is allowing invasive beetles to survive winters and kill trees, with drought and wildfires increasing the damage. … Continue reading →

Posted in BioInvasion, Drought & Collapse, Nate Hagens, Where to Be or Not to Be, Wildfire, Wood | Tagged , , , , , | Comments Off on When wood is again our main energy source, how long will it last?

Vaclav Smil on natural gas (ethane) and plastics

Posted on December 29, 2019 by

Preface. Vaclav Smil doesn’t mention using plastic for heat, but in a letter to The Guardian, David Reed suggests: “The effort of collecting, transporting and cleaning plastics for possible recycling has largely failed, created much more pollution and contributed massively … Continue reading →

Posted in Natural Gas, Vaclav Smil | Tagged , , , | 2 Comments

Bodhi Paul Chefurka: Carrying capacity, overshoot and sustainability

Posted on November 10, 2019 by

Preface. This is a post written by Bodhi Paul Chefurka in 2013 at his blog paulchefurka.ca here. I don’t understand his ultimate sustainable carrying capacity based on hunter gatherers. Why will agriculture go away? But the rest of the article … Continue reading →

Posted in Overshoot, Paul Chefurka, Population | Tagged , , | 7 Comments

The carbon trap by Paul Chefurka

Posted on October 1, 2019 by

Preface. We are caught in the carbon trap — we utterly depend on fossils that don’t have an electric replacement. Someday people will figure this out the hard way, but Chefurka compassionately points out that there is no one to … Continue reading →

Posted in Human Nature, Interdependencies, Paul Chefurka | Tagged , , | 13 Comments

Civilizations last just 336 years on average

Posted on May 6, 2019 by

Preface. I stopped trying to find out why each civilization failed because it’s not always clear and historians bicker over it, so I was glad to run across this article that attempts to summarize this broad topic. It’s clear drought, … Continue reading →

Posted in Cambridge Centre Study of Existential Risk, Collapsed & collapsing nations, Scientists Warnings to Humanity | Tagged | 4 Comments

Replacing diesel tractors with horses or oxen – what will that be like?

Posted on April 27, 2019 by

Preface. Since fossil fuels are finite, at some point increasing numbers of farmers with diesel vehicles and equipment will want to replace them with horses, which can do the work of six people.  Below is what  energy expert Vaclav Smil … Continue reading →

Posted in Farming & Ranching, Life Before Oil, Muscle Power, Peak Food, Vaclav Smil | Tagged , , , | 1 Comment