Humans Left Sustainability Behind as Hunter-Gatherers


Many people believe that humans can have a sustainable future by using solar panels and wind turbines. Unfortunately, the only truly sustainable course, in terms of moving in cycles with nature, is interacting with the environment in a manner similar to the approach used by chimpanzees and baboons. Even this approach will eventually lead to new and different species predominating. Over a long period, such as 10 million years, we can expect the vast majority of species currently alive will become extinct, regardless of how well these species fit in with nature’s plan.

The key to the relative success of animals such as chimpanzees and baboons is living within a truly circular economy. Sunlight falling on trees provides the food they need. Waste products of their economy come back to the forest ecosystem as fertilizer.

Pre-humans lost the circular economy when they learned to control fire over one million years ago, when they were still hunter-gatherers. With the controlled use of fire, cooked food became possible, making it easier to chew and digest food. The human body adapted to the use of cooked food by reducing the size of the jaw and digestive tract and increasing the size of the brain. This adaptation made pre-humans truly different from other animals.

With the use of fire, pre-humans had many powers. They spent less time chewing, so they could spend more time making tools. They could burn down entire forests, if they so chose, to provide a better environment for the desired types of wild plants to grow. They could use the heat from fire to move to colder environments than the one to which they were originally adapted, thus allowing a greater total population.

Once pre-humans could outcompete other species, the big problem became diminishing returns. For example, once the largest beasts were killed off, only smaller beasts were available to eat. The amount of effort required to kill these smaller beasts was not proportionately less, however.

In this post, I will explain further the predicament we seem to be in. We have deviated so far from the natural economy that we really cannot go back. At the same time, the limits we are reaching are straining our economic system in many ways. Some type of discontinuity, or collapse, seems to be not very far away.

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Energy Is the Economy; Shrinkage in Energy Supply Leads to Conflict

It takes energy to accomplish any of the activities that we associate with GDP. It takes energy to grow food: human energy, solar energy, and–in today’s world–the many types of energy used to build and power tractors, transport food to markets, and provide cooling for food that needs to be refrigerated. It takes energy to cook food and to smelt metals. It takes energy to heat and air condition offices and to power the internet. Without adequate energy, the world economy would come to a halt.

We are hitting energy limits right now. Energy per capita is already shrinking, and it seems likely to shrink further in the future. Reaching a limit produces a conflict problem similar to the one in the game musical chairs. This game begins with an equal number of players and chairs. At the start of each round, a chair is removed. The players must then compete for the remaining chairs, and the player who ends the round without a chair is eliminated. There is conflict among players as they fight to obtain one of the available chairs. The conflict within the energy system is somewhat hidden, but the result is similar.

A current conflict is, “How much energy can we spare to fight COVID-19?” It is obvious that expenditures on masks and vaccines have an impact on the economy. It is less obvious that a cutback in airline flights or in restaurant meals to fight COVID-19 indirectly leads to less energy being produced and consumed, worldwide. In total, the world becomes a poorer place. How is the pain of this reduction in energy consumption per capita to be shared? Is it fair that travel and restaurant workers are disproportionately affected? Worldwide, we are seeing a K shaped recovery: The rich get richer, while the poor get poorer.

A major issue is that while we can print money, we cannot print the energy supplies needed to run the economy. As energy supplies deplete, we will increasingly need to “choose our battles.” In the past, humans have been able to win many battles against nature. However, as energy per capita declines in the future, we will be able to win fewer and fewer of these battles against nature, such as our current battle with COVID-19. At some point, we may simply need to let the chips fall where they may. The world economy seems unable to accommodate 7.8 billion people, and we will have no choice but to face this issue.

In this post, I will explain some of the issues involved. At the end of the post, I include a video of a panel discussion that I was part of on the topic of “Energy Is the Economy.” The moderator of the panel discussion was Chris Martenson; the other panelists were Richard Heinberg and Art Berman.

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Fossil Fuel Production Is Reaching Limits in a Strange Way

Strangely enough, the limit we seem to be reaching with respect to fossil fuel extraction comes from low prices. At low prices, the extraction of oil, coal, and natural gas becomes unprofitable. Producers go bankrupt, or they voluntarily cut back production in an attempt to force prices higher. As the result of these forces, production tends to fall. This limit comes long before the limit that many people imagine: the amount of fossil fuels in the ground that seems to be available with current extraction techniques.

The last time there was a similar problem was back in 1913, when coal was the predominant fossil fuel used and the United Kingdom was the largest coal producer in the world. The cost of production was rising due to depletion, but coal prices would not rise sufficiently to cover the higher cost of production. As a result, the United Kingdom’s coal production reached its highest level in 1913, the year before World War I started, and began to fall in 1914.

Between 1913 and 1945, the world economy was very troubled. There were two world wars, the Spanish Flu pandemic and the Great Depression. My concern is that we are again headed into another very troubled period that could last for many years.

The way the energy problems of the period between 1913 and 1945 were resolved was through the rapid ramp-up of oil production. Oil was, as that time, inexpensive to produce and could be sold for a very large multiple of the cost of production. If population is to remain at the current level or possibly grow, we need a similar “energy savior.” Unfortunately, none of the alternatives we are looking at now yield a high enough return relative to the required investment.

I recently gave a talk to an engineering group interested in energy research talking about these issues. In this post, I will discuss the slides of this presentation. A PDF of the presentation can be found at this link.

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Reaching the End of Early Stimulus – What’s Ahead?

Many people thought that COVID-19 would be gone with a short shutdown. They also thought that the world’s economic problems could be cured with a six month “dose” of stimulus.

It is increasingly clear that neither of these assumptions is correct. Despite the claims of epidemiologists, our best efforts have never been able to reduce the number of newly reported COVID-19 cases for the world as a whole for any significant period of time. In fact, the latest week seems to be the highest week so far.

Figure 1. Chart of worldwide COVID-19 new cases, in chart prepared by Worldometer with data through September 20, 2020.

At the same time, the economy, despite all of the stimulus, is not doing very well. Airlines are doing very poorly. The parts of the economy that are dependent upon tourism are having huge problems. This reduces the “upside” of economic recovery, pretty much everywhere, until it can be corrected. Continue reading

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Today’s Energy Predicament – A Look at Some Charts

Today’s energy predicament is a strange situation that most modelers have never really considered. Let me explain some of the issues I see, using some charts.

[1] It is probably not possible to reduce current energy consumption by 80% or more without dramatically reducing population.

A glance at energy consumption per capita for a few countries suggests that cold countries tend to use a lot more energy per person than warm, wet countries.

Figure 1. Energy consumption per capita in 2019 in selected countries based on data from BP’s 2020 Statistical Review of World Energy.

This shouldn’t be a big surprise: Our predecessors in Africa didn’t need much energy. But as humans moved to colder areas, they needed extra warmth, and this required extra energy. The extra energy today is used to build sturdier homes and vehicles, to heat and operate those homes and vehicles, and to build the factories, roads and other structures needed to keep the whole operation going.

Saudi Arabia (not shown on Figure 1) is an example of a hot, dry country that uses a lot of energy. Its energy consumption per capita in 2019 (322 GJ per capita) was very close to that of Norway. It needs to keep its population cool, besides running its large oil operation.

If the entire world population could adopt the lifestyle of Bangladesh or India, we could indeed get our energy consumption down to a very low level. But this is difficult to do when the climate doesn’t cooperate. This means that if energy usage needs to fall dramatically, population will probably need to fall in areas where heating or air conditioning are essential for living. Continue reading

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