Friday, December 25, 2009

Can We Be Happy Using Less Energy? Uhhh...Yes!

Peak Oil is one of many symptoms of an ecologically full planet. Our genetically embedded drive for `more' coupled with an expanding world population of 6.5 billion mathematically suggests a finite limit for growth will eventually be reached, if it hasn't been already.



In discussions about the impacts of Peak Oil, it is sometimes implicitly assumed that we NEED to replace the energy lost from the coming liquid fuels decline with other energy sources in order to maintain our way of life and our happiness. Indeed, it seems that much of the current effort is focused on comparing/discovering the best energy alternatives with respect to EROI, environmental impact and scalability/timing. In addition, demand experts also look at efficiency, carpooling, 4 day workweek, living locally type solutions, etc. In this post, I look at Peak Oil from a broader context: the necessity and purpose of continued increases in demand for energy. What is it all for, if not to make us happy?




Ansel Adams photo "Richard Kobayahsi - Farmer and Cabbages"




Some ecologists are of the opinion that the world can sustainably house 1-2 billion humans-others believe we can hold upwards of 10 billion. Any figure used here presupposes a certain energy consumption and planetary impact per human. But the world currently has a broad variety of cultures, habits, and energy footprints. Based on the sometimes fearful rhetoric of the Peak Oil community, it is presumed that less energy per capita is necessarily a bad thing. In an initial exercise towards some longer term research, I looked at data of subjective well-being from a large multinational study done by www.worldvaluessurvey.org. This study, done in 4 waves over the last 15 years, measured dozens of demographic indicator variables, one of which was subjective well-being.



Below is one of their better known graphs showing the relationship between GNP per capita and % of population in each country that is `satisfied' or `happy' with their lives.








It can be seen, that at low levels of GNP, happiness is lacking, but once a certain level of GNP is reached, incremental income per capita adds very little to subjective well being.



Ronald Inglehart of World Values Survey verbalized the above graph by stating that after meeting basic needs, lifestyle choices make up the majority of the difference in the GNP spectrum, and lower energy lifestyles do just about as well as high energy lifestyles (indeed, there are at least 10 countries on that graph that score higher on life satisfaction than the USA, and they each produce less GNP).









In reading on this site, and in observations of life, it seems the concept in the above graph of diminishing returns once a set minimum has been reached, is ubiquitous in our culture. When you buy your 5th car, does that make you anything close to as happy than when you bought your first? (does it really make you happy at all, or is it like opening the fridge at midnight?). Is the 10 million dollar in the bank 10 times better than the first? Do we buy the 50th pair of shoes because we need them, or we need the feeling we get from buying them?


Since GNP and energy use are correlated, I was curious what the link would be between happiness and per capita energy use. Using the `very happy' percentage from the 1999/2000 wave of international tests from World Values Survey, I compared them to all countries that www.bp.com had primary energy data for (primary energy is a broader measure than just oil) and then divided by 2000 population census. The results are in this graph:









As can be seen, there is little correlation at all between subjective well being and energy use. (The actual r2 is 14%). Of note is the United States uses 39 times the primary energy as the Phillipines yet the percentage of the population that is `very happy' is about equal. While there is a low r2, this does not mean there is not a relationship. The graph shows that all high energy users are happy. But it also shows you don't need high energy to be happy. It could therefore be read as saying that the high users are wasting considerable amounts of energy - ie not needed to be happy.



Vaclav Smil, in his book "Energy at the Crossroads" did similar work on objective measures of wellbeing vs energy consumption. A pattern similar to the above `boomerang' curve is found on comparisons of female longevity, sufficient nutritional food, educational opportunities, freedom etc. The shape is also the same, but inverted, for infant mortality. In general, Smil concludes that a reasonable level of well being on objective measures is achievable between 50 and 70 GJ/per capita, with marginal increases up to 100 GJ per capita. As a comparison, North America is currently at 340 GJ per capita. Again, the large excess consumption is not improving objective wellness.



As evolved animals at the top of the food chain, humans have become adept at acquiring resources, including energy. At some point though, "more energy" apparently does not make us "more happy". Anecdotally, as a former stockbroker, I witnessed first hand that clients worth hundreds of millions were no happier than the entry level clerks, even though being fabulously wealthy represented the `carrot' that people strived for. Similarly, in travels abroad to Ecuador, Zambia, Thailand, etc, I consistently noticed extremely happy people with very low energy usages.



Everyone has wants and needs. The wants can never really be satisfied, irrespective of energy use (look at Donald Trump or Tom Cruise). The needs are what are most important. This is an encouraging point to be aware of in the years leading up to and following Peak Oil. More is not necessarily better. Less is not necessarily worse. Perhaps, through education, marketing and living by example, society can slowly modify the definition of the `carrot', to one requiring less energy but providing equal or greater happiness.








In Part II I will look at: how subjective "subjective well being" is, how our happiness is based on meeting/acquiring certain neurotransmitter cocktails that met with evolutionary success, how happiness itself is probably a combination of contentment+novelty and the large energy consumption is on the novelty side of the equation.

In closing, a Thought Experiment:

Think of or write down the 10 things in life that you most enjoy or like to do. Then, imagine you could only choose 3 from that list. What type of things would those be? Compare the wide boundary energy/ecological expenditures of your favorite 3 versus the other 7. More or less?


Note: This is an update on the first post I wrote for theoildrum, archived here. I'll soon be building on these concepts with a Part II.

Thursday, December 10, 2009

Belief Systems at the End of Growth

Many of the issues discussed on this bandwidth are large, long term, and threatening. Consider the three primary society-wide topics of analysis and discourse: climate, energy and the economy. It is my belief these 3 are linked by an underlying cultural growth/debt imperative running into a planet with finite sources and sinks. But within each category you have, still, despite the same access to facts and considerable passage of time, widely disparate and strongly held opinions. E.g. climate change is largely anthropogenic/climate change is largely naturally forced; peak oil is past/ peak oil is decades away; the financial crisis is passed/ government handouts have made the financial peril even greater etc. If you find yourself in a debate about any of these issues you'll find apathy or you'll find cognitive biases underlying a polarized opinion.

This post will address some social and psychological reasons why the urgency of our resource situation may not be being addressed on an individual level and only at a snails pace on the governmental level. Among the phenomena we will explore are a) why we have beliefs and how they are changed, b) our propensity to believe in authority figures, c) our penchant for optimism, d) cognitive load theory, e) relative fitness, f) the recency effect, and several others.

This essay, first posted on TheOilDrum in May 2006, was my first attempt at examining our cognitive belief biases. (Note - I've added an a epilogue and a few italics to the essay -I must say it was also interesting to see where my mind was nearly 4 years ago - I was clearer and more genteel (not to mention skinnier).

PROLOGUE




Our societal infrastructure was built with and expected to continue on cheap liquid fuels and few externalities. This fixed infrastructure coupled with a pretty much insatiable human demand drive for energy services may result in a once-in-a-species crisis if our planetary resource and ecosystems can no longer keep pace. But these problems ultimately are not about geology, technology or sink capacity - those are symptoms. At its core we face a human problem. Our collective cognitive belief systems and the resulting behaviours they engender will play pivotal roles in our failure or success in mitigating and adapting to the vast challenges of both resource depletion and environmental limits.

This post will outline some of the behavioral tendencies we can expect to encounter as we attempt timely and logical solutions to declines in per capita energy availability. It will explore how we process new information and culminate in an examination of our belief systems themselves. As in my recent posts, I preface this one with a discussion I recently had with my Wall St. friend Thomas, (who fittingly has still 'not had time' to read the oildrum story on steep discount rates):



N: Thomas - I'm writing another story for theoildrum.com and would like your comments since you seem to represent the 'non-believer camp'.

T: It's not that I don't believe that oil will peak someday - it's just that the doom and gloom people are always wrong - somehow something will come along and in 5 years you'll say "well, how could I have known about 'XXX'? No one knows the future - including you Nate.

N: I've never said when Peak Oil would be, only that it would eventually mean the end of economic growth as we know it - and that technology and capital can't 'create' energy. The market will be too late to react to the signals once they come. The asset allocators on Wall St have used a formula for the 70 years of stock market history based on cheap oil and high energy gain. That era is over - new rules or maybe a new game.

T: No offense buddy - I know you're very intelligent. But there are thousands of smart people on Wall St and elsewhere analyzing data - don't you think it's a little odd that YOUR opinion is the right one over all those people whose full time jobs it is to pore over oil demand and supply figures?

N: Well, when put like that it always shakes my confidence, but I do believe the street is missing the main tenets of Peak oil - that environmental limits and declining net energy will overtake conventional market and technology solutions, and that we've replaced this temporarily with debt at what will be a huge future liability. And by the way - there ARE a lot of analysts talking about peak oil and its implications - the new GAO report on Peak Oil came out last week and pointed out how unprepared we are..

T: Now you trust what the Government is saying? You used to say the government energy forecasts were terrible and we shouldn't believe in them -now they write something that fits your position and you use it for support?

N: Were you always this argumentative? Wait -don't answer that -I've known you since grad school. Can you honestly say that you've read things on theoildrum and other sources for objective information on this topic?

T: I have 3 kids and work 60 hour weeks so I choose how to spend my reading time. Can you say YOU'VE read all the research saying we have plenty of oil until at least 2040 after which there will be plenty of substitutes? You should talk to some of my biofuel entrepreneur friends - they are telling my 10:1 energy return on cellulosic within 3 years.

N: I've started from scratch 3 or 4 times on the core Peak Oil tenets, thinking I might have something very wrong, but I've been over it enough to unfortunately feel pretty confident I'm right, though less certain on the timing of rationing, etc.

T: Nate, I shouldn't tell you this but our asset management arm is in the top 10 in the world in terms of assets and do you know what our number one position is?

N: Starbucks?

T: No. We're short oil futures. We think its going back to $40 well before it goes to $100. (ED NOTE: This piece originally ran in May 2007, when oil was $65. It subsequently went to $145.)

N: Thomas this is all besides the point. I'm not predicting what will happen in the next 3 months or next 3 years - what I'm saying is that very soon, in our lifetimes, the economic system will run out of cheap energy and it won't work in reverse. The bullish supply forecasts either siphon that 'energy gain' from other economic sectors or by robbing it from the environment via water and ecosystem depletion and increased GHGs.

T: Whatever. And even if you're right. We're here to live life. I'm not going to sit around waiting for 'the next big change' when I can enjoy life with my kids and live large. I work hard you know.

N: Actually you're a grifter. But you're still my friend, even though you're closed minded at times. Later.


(Ed. note: post mortem: since early 2008, Thomas and I have stopped communicating, partially due to polarizing conversations like the above)

The above discussion is in many respects a synopsis of this post - that despite facts, we exhibit certain cognitive biases that prevent us from acting on complex or frightening subjects outside of our day to day realities. What follows below is a brief overview of 10 cognitive phenomenon that may inhibit wider understanding and action on oil depletion. (Caveat - Neuroscience is a complex and growing field that has many valuable contributions to offer. In discussing human tendencies for various behaviours, I am of course generalizing, as are most of the scientific studies - when I say 'people value the present more than the future', I make that claim in the same vein that 'men are taller than women (on average)' )


DENIAL/COGNITIVE DISSONANCE






Denial is a defense mechanism where a person is faced with a fact that is too painful to accept and rejects it instead, insisting that it is not true despite what may be overwhelming evidence. A related psychological concept is that of cognitive dissonance, originally coined by social psychologist Leon Festinger. Cognitive dissonance describes the negative tension that results from having two conflicting thoughts at the same time, or from engaging in behavior that conflicts with one's beliefs.

From Wikipedia,

"The theory of cognitive dissonance states that contradicting cognitions serve as a driving force that compels the mind to acquire or invent new thoughts or beliefs, or to modify existing beliefs, so as to reduce the amount of dissonance (conflict) between cognitions. Experiments have attempted to quantify this hypothetical drive. Some of these have examined how beliefs often change to match behavior when beliefs and behavior are in conflict."


Jared Diamond, in "Collapse" quotes the behaviour of people living below a dam that may break:

"“Consider a narrow river valley below a high dam, such that if the dam burst, the resulting flood of water would drown people for a considerable distance downstream. When attitude pollsters ask people downstream of the dam how concerned they are about the dam’s bursting, it’s not surprising that fear of a dam burst is lowest far downstream, and increases among residents increasingly close to the dam. Surprisingly, though, after you get to just a few miles below the dam, where fear of the dam’s breaking is found to be the highest, the concern then falls off to zero as you approach closer to the dam! That is, the people living immediately under the dam, the ones most certain to be drowned in a dam burst, profess unconcern. That’s because of psychological denial: the only way of preserving one’s sanity while looking up every day at the dam is to deny the possibility that it could burst. If something that you perceive arouses in you a painful emotion, you may subconsciously suppress or deny your perception in order to avoid the unbearable pain, even though the practical results of ignoring your perception may prove ultimately disastrous. The emotions most often responsible are terror, anxiety, and grief.”


Reaching social limits to growth is potentially a world-sized dam break. It's no wonder initial reactions to hearing how the world we know might change are met with skepticism. (Note: interestingly, and something I intend to explore on a subsequent post, is the concept of denial is related to the study of addiction.)


COGNITIVE LOAD THEORY



"Chocolate Cake?" "or Fruit Salad?"

Cognitive load theory suggests humans have a maximum capacity of working memory. At around 7 'chunks' of information, our working memory maxes out and we can't accept anything else without losing some of the previous 'chunks'. Try remembering the following numbers 1-9-1-4-7-6-7-5-9-5-9. Its quite hard to do. But if they are rearranged in chunks 1-914-767-5959, it becomes much more manageable. Numerous studies have measured this phenomenon - a notable study by Shiv and Fedhorkhin(1) asked a group of people to memorize a two digit number, walk down a corridor and at the end choose a dessert - either chocolate cake or fruit salad. A different sample of people were then asked to memorize a 7 digit number and walk down the corridor (while internally reciting this 7 digit number) and also choose a dessert. When required to memorize the 7 digit number, almost twice as many people chose the chocolate cake as in the sample only memorizing the 2 digit number - the implication being - 'my short term memory is full - I cant access my rational, long term decision-making hardware - just give me the damn cake'.

Of course, in a society with cell phones, taxi-cabs, internet, coffee, soccer practice, Grays Anatomy, corporate ladders and a plethora of other chocolate cake-like stimuli, meaningful contemplation and education about energy depletion and our planet's environment usually represents the fruit salad. Many people are just too cognitively taxed to take on much more.


STEEP DISCOUNT RATES






"The rational vs emotional discount rate"


As discussed in a recent oildrum post, we have evolved neural mechanisms to steeply favor the present over the future (measured by what economists call ‘discount rates’), and modern OECD culture exacerbates this trait. The higher the rate, the more one is 'addicted' to the present moment. Lower discount rates suggest more control of the neocortex in subverting the mammalian/reptilian impulses of 'living for the moment'. Different objects/concepts are discounted at differing rates (e.g. sugar, and money). Different subsets of people (drug addicts, young people, gamblers, men, risk-takers, low math scorers, alcohol drinkers, etc) have steeper discount rates - are less able to act for the future and are easier pulled in by short term desires.(2)

We have evolved to have instant access to our emotional minds in times of stress or danger - a million years ago too much rational thought would have essentially been suicidal. Oil depletion, climate change and loss of planetary ecosystems are long lead time problems. As such, information leading us to believe a peak in global oil production is either a) no big deal or b) beyond 2030 is essentially not 'received' by our emotional minds. The average person and politician will process such information as a free pass to continue the business as usual path. This is especially true if the assessment comes from a confident, respected, mainstream source (such as CERA), because it trickles down through corporate hierarchical society. Collectively it will be difficult to act until these issues become 'in the moment' too.

RECENCY EFFECT



Steep discount rates work backwards as well - the oil crises and gas lines in the 1970s are today like stories in the history books - nothing that carries too much emotional weight in the present - its almost as if our action and motivation triggers are like one of those maps that show the areas of daylight, only caring about the areas that are lit up - the dark areas are too far beyond our ken. The recency effect is just steep discount rates in reverse - instead of weighting the future less than the present, we weigh the past less than the present.

Cognitive psychologists have recognized that people tend to overweight the most recent data and stimuli they receive in their decision-making processes. A possible reason for the recency effect is that these items still linger in working memory when recall is solicited. This recency effect has two important relationships to the peak oil and global warming issues. First, we collectively assume that today will be much like yesterday and tomorrow will be like today - grocery stores chock full of oil-subsidized tasty treats, gas stations with cheap and easy fill-ups, and a plethora of novel entertainment and diversion options preclude our mind from thinking tomorrow will be any different. Second, in the various campaigns to educate and inform the public and policymakers on the dangers of oil depletion, any 'recent' optimistic piece in the mainstream media that dismisses Peak Oil has a tendency to mentally 'overwrite' some of the prior Peak Oil education one might have achieved.

Part of the reason I looked into research on the recency effect is that I noticed myself yo-yo-ing on peak oil and climate change depending on who I talked to or what I'd seen. I started to notice a pattern that my 'belief' was highly correlated to whatever I'd read or whoever I'd spoken to most recently. Since there are so many unknowns on both topics, to hear demonstrative language from confident sources does a lot to sway one's opinion, until and if one has time to methodically explore the arguments during subsequent individual research.

I am not a climate expert but do know enough to understand that humans are impacting the planet in many ways, some benign, some moderate and some deleterious. As a graduate student under Robert Costanza, a scientist very concerned about climate change, I felt almost embarrassed after viewing The Great Global Warming Swindle. Even though I recognized some factual mistakes, the rhetoric and confident tone in the movie pulled me in - the general tenor made me feel that climate change is relatively benign and concerns about it are overblown. That is, until the next morning when I got a series of emails from my professors about its content after which my opinion completely flip-flopped again. (Note: all of these folks have more knowledge than I on the topic) I expect this is a common experience. The central issues of climate change and oil decline are so broad and complex that both science and advocacy fall victim to the recency effect. Whoever is loudest, most confident and most repeated (i.e. heard last), has an advantage. Advertisers must be aware that the recency effect is both valid and powerful, otherwise we would have long ago decided on which product is superior between Miller and Budweiser on the facts alone.

(12/10/09 Note: This same dichotomy continues today: the global effort in Copenhagen getting closer to finally putting prices/limits on externalities combats the shrill but plausible climategate/natural warming crowd. Piltdown man did not negate the theory of evolution. (this piece reasonably summarizes my own views on CRU situation). The facts will one day weigh in, heavily, but until then, for better or worse, this issue seems more like religion that science, on both sides. I am still no expert on climate, but I'm beginning to be one on belief systems. If you find yourself in a room with a scientist/advocate from both sides of this debate, a socially astute 3rd party knows in advance what topic will find no middle ground and is best avoided....neither peak oil nor limits to growth have yet made it to that tier of social awareness...)

BELIEF IN AUTHORITY FIGURES








"I have it from high authority that there is plenty of Oil Resource"




theoildrum.com contributor says "Net energy to fall - society needs to change 'metrics of success' quickly"



Think about your initial reaction to the above two assertions. Depending on your walk of life, your gut reaction and thought process might differ. However, science (and history) has shown that humans have a propensity to be externally validated - we believe in and follow instructions from confident authority figures. Though theoildrum.com contributor is clearly confident, he certainly is not an authority figure, at least outside pike fishing circles. The Pope however, influences billions**. With few exceptions, most voices advocating immediate steps for mitigating peak oil are not what society would perceive as 'authority figures'. Recent research suggests that humans prefer confidence and 'cockiness' irrespective of a poor track record compared to a non-confident source....that might explain alot in the energy information community!

But what if the tables were reversed?

NEWS FLASH ---“EXXON-MOBIL SAYS THE WORLD HAS PASSED PEAK OIL – THEOILDRUM.COM SAYS NOT TIL 2030”



Imagine if that headline ran through the media around the country. Corporate leaders would hold emergency meetings on how to lock in prices or even supplies. (Some might liquidate their 401ks and not even show up)…. Politicians would be on television urging people to wear sweaters or even winter coats…. A gasoline tax would be quickly implemented…. Purchases of wind turbines and solar panels would soar… Tuna and chocolate hoarding...Cats living with dogs – real Old Testament stuff.

However, the situation is precisely opposite that. Astute, reasoned analysis by concerned individuals gets easily drowned out by rhetorical op-ed pieces in respected newspapers. Portrayal of concern for peak oil as a 'chicken little', 'Cassandra' and 'boy who cried wolf' phenomenon by a credible news source effectively erases what nagging concern or belief about oil depletion someone had started to foment.

Sociology recognizes that we have a propensity to believe in authority figures. Though the why of this is yet to be sussed out, Richard Dawkins believes it is an adaptive byproduct of children who unquestioningly followed adult instructions during the thousands of generations of our ancestral environment.(3) Presumably, the penchant for adults to easily believe things that are confidently told to them is a carryover from the children who did NOT eat the berries, touch the snake, or swim over a waterfall – these children survived to have children of their own. Social psychologist Robert Cialdini has written a book related to this phenomenon, on how certain people can have outsized influence on others using certain authoritative tactics. (I wonder aloud if Messrs. Jackson and Yergin own copies)

Irrespective of its origins and as uncomfortable as it sounds, we DO inherently believe in authority figures, as the famous and controversial Milgram experiments evidenced. 65% of volunteers delivered what they thought were fatal doses of 450 volt electric shocks to human subjects while being calmly assured to continue by the experiment 'administrators' (doctors in lab coats). The other 35% of participants still delivered high voltage shocks to the point of unconsciousness but refused to administer the 'highest level' shocks. Interestingly, none of these 35% insisted that the experiment itself be terminated, nor left the room to check that the victim was O.K. without first asking for permission. So much for independent thinking. In interviews prior to the experiment respondents predicted that only the most 'sadistic' 1.2% of participants would be willing to hurt another participant with electric shocks, yet 100% of the participants DID administer the shocks. The power of authority figures is indeed strong.

To be honest, when preparing this post, I read and reread CERAs analyses and interviews – the recency effect combined with the utter confident tone they were written in made me (again) question that maybe I have this all wrong – that we have smooth sailing until 2030. But, after some malted milk balls and a quick review of my colleagues work, which at a minimum shows CERA does not incorporate net energy, understand Hubbert Linearization or include environmental externalities, Peak Oil again had me very worried.

** Some interesting trivia about the history of religion and science. In 1992 a Papal commission of the Roman Catholic church acknowledged it's error from 1633 when it sentenced Galileo to life imprisonment (commuted in house arrest) for his belief in heliocentricity (that the earth revolves around the sun).

RISK AVERSION



Risk aversion is a financial and psychological concept that posits consumers (people) prefer a certain but possibly lower payoff than an uncertain but possibly higher payoff. With respect to Peak Oil, there is such a societal Sunk Cost that even if the average person or politician is on board with the understanding of fossil fuel depletion, the risk of stepping outside the warm cocoon of modern grid-connected energy intensive society can be emotionally daunting. Too, there aren't too many blazed paths as of yet illustrating exactly what one person or family can and should do to adapt. Our society is SO dependent on oil that most alternatives are too risky for the average family to pursue. Or at least that may be the perception.


RELATIVE FITNESS



"When you get up in the morning, you do not think about triangles and squares and these similes that psychologists have been using for the past 100 years. You think about status. You think about where you are in relation to your peers." - Neuroscientist Michael Gazzaniga


My Dad is stronger than your Dad. And Peak Oil is not a 'theory' buddy

Moving up the mating ladder contributed to our ancestors reproductive success - those near the bottom of the ladder are not our ancestors. The advent of language in tribal living expanded the scope of reputation and its influence on mating competition. An individuals comments, actions and opinions thus contributed to increasing or decreasing his status within the tribe. One could argue that a good part of human communication is concerned with getting other people to think, behave and believe as we do. At the same time, those others are trying to get us to behave and believe like they do – it’s the culmination of our biological and political (social) heritage.

This concept has many demand side implications for Peak Oil not the least of which will be some variant of resource grab when per capita liquid fuel availability declines. But it also plays a large role in peoples differing and sometime entrenched viewpoints on the topic of Peak Oil, irrespective of their future actions. My friend Thomas has a career in finance - his income is dependent on his clients buying stocks, which are in turn dependent on the economy growing. He has 3 children and a huge house full of gadgets and requires alot of fuel to continue his planned trajectory (though he admits he could be happier on much less). A Peak Oil world as I've painted it could be perceived as a threat to him, his family and his lifestyle. For him to accept my worldview is in some ways admitting that his own life is built around the wrong premises. Similarly, if our current Disneyland culture continues to extract resources and environmental costs and the day of reckoning comes well beyond my lifetime, perhaps I have wasted some of my time on this planet unnecessarily calling attention to what I view as urgent risks associated with net energy decline and human social traps.

Oh, How sweet it is to hear ones own convictions from another's lips. - Goethe (1749-1832)


For what a man would rather were true, he more readily believes. Francis Bacon 1618


Some who are very vocal about the urgency of Peak Oil will take a 'perceived fitness hit' if information comes to light that delays or moderates the impact of a peak and decline in world oil supply. Similarly, those who think we have plenty of oil production and flow capacity for the next 20-30 years will look foolish (e.g damage their reputation leading to a 'perceived' drop in fitness status), if it turns out we never see 90 million bpd and have 5% annual depletion rates beginning in a few years. In truth, for many the facts are mostly irrelevant - their belief systems are relatively immutable and new facts coming to light that support their convictions are viewed as 'victories' even if they add pain to the world as a whole. Similarly, new facts contrary to their beliefs are perceived as 'failures' and are responded to defensively. Curiously, it puts certain people, myself included, in a position of cognitive dissonance - I sincerely hope society manages to amass an armory of silver BBs and reduces consumption enough so that Peak Oil is a seamless transition to a sustainable future, but if that happens, most everything Ive written about in the past few years will have been incorrect. (But maybe I impacted the experiment...;)

Those oildrum.com readers who've participated in these forums for some time now are especially aware that certain people seem to be 'rooting' for peak oil and an end to the current capitalist consumptive system. I believe at least part of this is even though post peak oil they will have less 'absolute fitness', their 'relative fitness', compared to Joe-Mortgage-Trader-Millionaire-Next-Door, will increase. In the end, we are wired to respond to relative fitness.

SELF DECEPTION



"Deceit is the Cinderella of human nature; essential to our humanity but disowned by its perpetrators at every turn. It is normal, natural, and pervasive. It is not, as popular opinion would have it, reducible to mental illness or moral failure. Human society is a network of lies and deceptions that would collapse under the weight of too much honesty." (p 2, Why We Lie - The Evolutionary Roots of Self-Deception and the Unconscious Mind, David Livingstone Smith)


Part of being convincing to others is being convincing to oneself. Humans are refined 'cheaters' and 'cheater-detectors'. We notice pupil dilation, sweating, increased pulse, galvanized skin response, eye movement, flared nostrils etc. all as signs of stress/dishonesty. (There are now even professional emotional screeners at airports to look for such signs). Deception is a fundamental aspect of communication in nature, both between and within species. From alarm calls to mimicry, animals use deception to further their survival. Those who are better able to perceive deception are more likely to survive. It is theorized that self-deception evolved in a social species in order to better mask our deception from those who perceive it well, as evolutionary biologist Robert Trivers puts it: "Hiding the truth from yourself to hide more it deeply from others."

Lest I deceive myself, the concept of self-deception requires its own post, or series therein. The implications even if this theory is partially true, are large.


BELIEF IN OPTIMISM



People vocal about the risks of Peak Oil are often viewed as pessimists, though I suppose they prefer the word 'realists'. We are taught from an early age to 'look at the bright side' and 'every cloud has a silver lining'. Humans do in fact have a penchant for optimism, and this sets up for an immediate bout of cognitive dissonance when discussions of peak oil nasties are undertaken.

Individuals have a tendency to be overly optimistic, and therefore naturally discount 'pessimistic' viewpoints and worldviews. Adults are particularly vulnerable to self-deception when comparing their own intelligence and attractiveness to others.(5) Research has shown that we systematically exaggerate our chances of success, believing that we are more competent and more in control than we really are. 88% of people think they are better drivers than average. 94% of professors believe they are better at their jobs than the average professor, etc. (By definition, almost half of those surveyed are 'overly optimistic'.)

There are good neural explanations for being optimistic. Even if the pessimistic view may be the more accurate, the stress of incorporating the particular negativity into ones worldview releases a cascade of stress-activated hormones that can seriously compromise a persons health.(6) In addition, pessimism can lead to depression, which suppresses the normal functioning of important neurotransmitters such as serotonin, which in turn can lead to reduced physical activity, mood swings, and a number of other physical symptoms and diseases. Optimistic attitudes also reduce secretion of cortisol, a stress hormone that inhibits the immune system, as well as produce more helper T-cells (4). The placebo effect is a well known but little understood medical phenomenon that improves patients physical response with no actual medication. In depression patients, placebos increase wellbeing by an average of 30-50%. Apparently, when we 'think' positively that something is helping us medically - even if its a sugar pill, it 'works'. We are now seeing that the brain is helping this healing to occur through a different neurotransmitter mix.






"Peak Oil - Glass Half Full or Half-Empty?"



An optimistic outlook actually is neurochemically self-fulfilling. Optimism leads to increased frontal cortical activity which itself is a strong predictor of idea generation, positive emotion and overall liveliness of thought. Similarly, sadness is marked by decreased activity in the frontal cortex, which has the negative side affect of reducing the number of overall thoughts and ideas produced. Cognitive neuroscientist Antonio Damasio points out that our brain exaggerates reality - when the glass is half full - the brain adds a little more for zest - when the glass is half empty, the brain subtracts some and things seem worse than they really are.

Being introduced to peak oil can be quite a shock. Its tough to be cheerful about the facts and implications about oil depletion, though ultimately we definitely could (and should) be happier with less energy. But initiation to the concept of upcoming shrinkage of the lifeblood of society can easily cause internal conflict in a species obviously wired to gravitate towards optimism.


GROUP THINK / HERD MENTALITY



We originated in tribal settings where consensus was important. Consensus building and group projects are taught and experienced in our culture from an early age - though in an era facing true scientific problems, the warm fuzzy group decisions can backfire. One famous example of 'Groupthink' was the Bay of Pigs invasion, where President Kennedys key advisors had serious misgivings about the strategy, but in group strategy sessions refused to speak up for fear of disrupting the seemingly overwhelming consensus. The invasion went so badly that the President specifically ordered his staff to speak up and offer dissenting opinions in future discussions, an order that may have averted a war during the Cuban missile crisis. As most media is quick to dismiss Peak Oil, our nation could use another such warning against 'groupthink'.





"Monkey-see-activate mirror neuron Monkey-do"




There is comfort in the herd. The recent discovery of mirror neurons helps explain why our brains are prone to absorb the beliefs and behaviours of others. Neurobiologically, when we see someone performing an action, whether it is a yawn, a smile or eating an ice cream cone, unique parts of our brains respond in the same way as if we were performing the action ourselves.(4)

Homo Sapiens See - Homo Sapiens Do.

Interestingly, USC neuroscientists (Arbib and Rizzolatti) are suggesting that the origin of language began as facial expressions and hand gestures - these communication tools, along with actual speech, are regulated by Brocas area, a small knob found in the left hemisphere of the cortex. As we will see below this has important implications.

BELIEF IN MAGIC, MYSTICISM, CORRELATION, ETC. (AS OPPOSED TO SCIENTIFIC METHOD)





Knowledge is a disposition to behave that is constantly subject to corrective modification and updating by experience, while belief is a disposition to behave that is resistant to correction by experience. Eichenbaum, Howard – Boston University (5)



The previous nine points were tenderizer for the meat of the article to follow. If you've read this far you're either unemployed, retired, a psychologist, a blood relative, my girlfriend or someone on the edge of a paradigm shift. Thank you in any case.

The difficult transition to a lower energy gain society by definition has a 'best path'. Also by definition we won't ever know what that path is, or at least until well into the future. How we collectively assimilate beliefs, attitudes, science and policy will be the key determinant in how we sink or swim with the Peak Oil tide. Unfortunately, we have baggage.

So far we've looked at our propensity to believe in authority, optimism, recent events, group behaviour, etc. Taken together, these leanings might suggest that we have some sort of pre-packaged neural software for abstract systems of 'belief'. In truth, we actually have no choice BUT to believe. From the moment of birth we depend on others to instruct us about the world. While young, we are given a specific language, a specific religion, a smattering of science and history and all the while we implicitly assume we are learning facts about the world. But we are not. We are simply being told what to believe. Though this is of course practical, it has resulted in 6.5 billion different (but overlapping) belief systems, somewhat modifiable as we grow up but increasingly less malleable as we get older.

What is a belief?


As defined by the Oxford English Dictionary, ‘belief’ is:

1. A feeling that something exists or is true, especially one without proof.
2. A firmly held opinion
3. Trust or confidence in.
4. Religious faith.



The English word 'belief' originated in the twelfth century, as an adaptation of the German word gilouben, which means 'to love' or 'to hold dear'. It was first used in association with religious doctrines referring to one's trust and faith in God - faith rather than fact being the operative word, as this particular type of belief cannot be tested by the rigorous proofs developed by science.

What is the Scientific Method?


a. Observe some aspect of the universe.
b. Invent a theory that is consistent with what you have observed.
c. Use the theory to make predictions.
d. Test (attempt to falsify) those predictions by experiments or further observations.
e. Modify the theory in the light of your results.
f. loop back to "c" above for another test. (8)


Famed scientist Richard Feynman offers an excellent description of 'good science' vs. 'cargo cult science' here.


At the cottage where I write this, there is the unmistakable sound of sandhill cranes calling for mates - when I first heard it I had no idea what it was. The fourth time I heard it I was with my father who identified it as a mating pair of sandhill cranes. The 10th time I heard it I witnessed the actual cranes by a pond. Mentally, my brain created a hypothesis and eventually ‘tested’ it to be 'true'. A certain sound represents sand hill cranes mating. Our ancestors discovered all they needed to know about the natural world in a process something like this one.

However, many stimuli in our society are much less clear cut. If I see a blue BMW sedan with an attractive blonde in the passenger side 2 or 3 times in a week, my mind will naturally extrapolate the 'ownership of a blue BMW' as a signal of successful male competition, when there could be myriad other explanations for the womans presence (the mans personality, his looks, his intelligence, his sister etc) The fact that he owned that particular car could have been completely random - yet my brain observed this pattern and extrapolated it forward.





"An early hominid couple, forming beliefs.."


During the 2 million+ years of hominid brain growth and development, the environment was roughly constant – in most cases for at least for thousands of years at a time. Here we developed ‘pattern-recognition’ systems of beliefs, the precursors of what economists today call ‘correlation’. The human brain was exquisitely designed to favor correlation over causation. We did not evolve mechanisms to follow regimens like the scientific method because our species would have been systematically snuffed out by predators on the african savannah and a different species might be facing oil depletion. Our neural architecture was being built to adhere to correlations we observed in everyday life, because in these stable environmental timeframes, most correlations DID lead to causations. The periods of largest brain size increase in hominids were probably when some tribal leaders got good at noticing patterns and successfully made tools, or repeated routines that added fitness - these genes and thought processes then multiplied.


"The human mind evolved to believe in gods... Acceptance of the supernatural conveyed a great advantage throughout prehistory, when the brain was evolving. Thus it is in sharp contrast to [science] which was developed as a product of the modern age and is not underwritten by genetic algorithms." The Biological Basis of Morality, E.O. Wilson


Our stimuli laden modern world presents us with millions of small sample size events that offer our built-in pattern recognition systems plenty of fodder for creating 'beliefs' in situations where the scientific method never comes into play. Our pattern recognition system is essentially misfiring in a world of too many patterns – “NFC wins Superbowl and stock market goes up" (I had clients investing on that one) – “I can’t date guys who are Virgos” – ‘Walk under a ladder with a black cat and get really bad luck’ –‘Your second Chakra looks a little weak today’ ‘The market will solve it’ etc. We unknowingly conflate correlation with causation, a danger that is learned to be avoided early on in the career of a scientist. And overriding it all is the theme of relative fitness where we attempt to justify, through social persuasion, that our 'patterns' are the correct ones. The upshot of this tendency is that charisma, rhetoric, advocacy, and politics can all too easily trump the scientific method, just when our species will need it most to tackle climate change and the attempted transition to renewables. (Note: Scientists are humans too, and are not immune to these neural processes – clearly when they write and publish they are accessing the rational neocortex gray matter and take their time to get facts and figures right – but in everyday communication – once emotion gets involved, the built-in genetic priorities fall back on belief systems.)

Our individual constructs of reality are based on beliefs - some beliefs are changed by new information, reflection, and analysis - others are virtually immutable. (Though my friend Thomas has a decent 'factual' understanding of Peak Oil - he may never incorporate it in the larger sense into his belief system.) From recent results of research into brain injury along with those from experiments on animals, we have begun to chart the neural processes active in distinguishing emotions, fantasies and facts. With fMRI and PET scans we can watch as a priest prays or a monk meditates or even when a person encounters new information that is discrepant with a prior held belief. On brain scans, meditative and transcendent states are in many ways similar to when a person experiences pleasures from sex, music or a good meal.(4) The very concept of the peaking and subsequent decline of oil - a vital resource to our lives that may become less and less available is a very difficult one to understand let alone accept. The 'knowledge' we obtain from scientific research on energy largely depends on how our brains interpret the evidence. These interpretations are subject to the same rules that govern our perceptions of reality - they are replete with generalizations, assumptions, misunderstandings and mistakes. By the time newly acquired knowledge reaches consciousness, each of us transforms it into something that fits with our own unique worldview. This process of reconstructing reality is the foundation from which we build all of our beliefs about our world.(4)

But sometimes, reality is not reality, even to ourselves.


Our time bomb is mysticism. It's delivery system is language. And it's hiding place? The unfathomable coils of our DNA. Reg Morrison The Spirit in the Gene(9)



And finally we come to what (for me) is the most fascinating piece of the human neural puzzle. In the discount rate post last month, I pointed out that we have developed a ‘triune brain’, with the 3 layers representing the 3 main periods of our organismal development (reptilian, mammalian, neocortex regions largely corresponding to primitive, emotional and rational thought). However, the neocortex itself is split into two hemispheres, the left and right, separated by a thin straplike connector called the corpus callosum. Neurobiologist Roger Sperry states that patients who have the corpus callosum removed (split-brain patients) behave as if they have ‘two separate minds, two separate spheres of consciousness…in regards to cognition, volition, learning and memory.’

Only our left brain hemisphere has a ‘voice’ for communicating with others – emanating from 'Brocas area’, the speech control center of our brains. Any findings and opinions analyzed by the perceptive and intuitive right hemisphere must first travel through the left hemisphere before leaving our mouths as communication. If you’ve been following along, you might see how this might relate to Peak oil or climate change.




There are fascinating experiments done on split brain patients - one of note was a brain experiment by Michael Gazzaniga at Dartmouth, a patient with his corpus callosum removed, was shown two large pictures – in front of the left eye – some snow – in front of the right eye, a picture of a bird’s foot. Beneath each image were a series of smaller images, only one of which was related to the image above. When asked to point to the picture below that was linked to the birds foot, the right hand (left brain) correctly pointed to an image of a chicken. Similarly, the left hand (right brain) correctly chose an image of a shovel to relate to the larger snow image. When asked to explain the decisions, the verbally controlling left hemisphere offered the obvious explanation linking its own choice of a chicken to a bird’s foot. HOWEVER, when asked why the left hand (right brain) had chosen the shovel (for the snow scene), the left brain replied that the shovel had been selected for cleaning out the chicken shed! Though our brains are not privy to their own internal workings, the left brain should have admitted it did not know why the right brain chose the shovel because it had never seen the snow scene –but instead it fabricated an answer to fit its own part of the story.(10)

Though most of us fortunately still have our corpus calllosums intact, new research is suggestive that the socially conforming and editing power of our left brains is powerful when dealing with pre-existing or strongly held beliefs, such as 'we have plenty of oil', or 'the market will find a solution'. Thus, in addition to being marketed during the waking hours by Madison Avenue, we are being marketed '24-7', by ourselves.

Reg Morrison succinctly concludes the following:

“It seems our loquacious left brain cannot abide a vacuum. As it ghostwrites our right-brain narrative, it obsessively fills in any gaps and injects snippets of its own propaganda wherever it can. Here then is the source of the so called ‘false-memory syndrome’, and no doubt the origin of most of our mystic visions and spiritual fantasies...By endowing the human brain with its language facility, evolution has ensured that human genes will continue to bypass the cerebral cortex at will, disguising fact with significance and imagination into perceived fact” Reg Morrison – The Spirit In The Gene(9)


CONCLUSIONS



As humans, we have tendencies towards certain behaviours that increasingly can be scientifically measured. While the neurosciences are still expanding and are now asking more questions than they have answered, it is clear that our minds are not entirely rational, or at least not rational all the time. Thus providing us with 'facts' does not automatically guarantee we will use them to solve problems. Competing voices, both from within and without, can easily morph those facts into something different than the pure scientific form they originated in.

Our modern education system, from which arises the standard for our culture and the education of our children, is anchored by an archaic and incorrect premise: that knowledge can come from the human mind based on assertions that require no proof or verification. The origins of this error go back to ancient philosophers who were quite likely geniuses but did not have access to the real scientific data and physical methodologies available to us today. Many modern philosophers and social scientists still adhere to the fallacy that knowledge comes from thought. New evidence from the cognitive neurosciences is demonstrating that pure thought cannot spontaneously come from a brain designed for correlation, emotion and relative fitness. Special steps need to be taken to teach, understand and adhere to the scientific method, which in turn builds knowledge.

In the calm before the storm, we need to take stock in what our assets and liabilities really are. We have energy assets and liabilities and we have mental ones as well. As energy events conspire, and the average person becomes more stressed, we may distance ourselves even further from the rational aspects of our collective behaviour. Plans should be made ahead of time to address local, regional and national energy (and environmental) problems with hope but careful skepticism, for its unlikely we will get too many second chances. Robert Rapier and I share some viewpoints and disagree on others, but one thing I have always respected about him is his immediate skepticism of high claims. Whether he is an expert on a topic or a novice, he approaches a problem from a scientific, provable, verifiable foundation. If more of our countries civic leaders followed the scientific principles of 1)observe something in nature 2) make a hypothesis 3) test the hypothesis using physical methods and 4)repeat until statistically satisfied, we would find ourselves better served and better prepared for an era of energy declines. We must marry facts about geology and the environment with facts about our neural tendencies. And recognize there will likely always large error bands.


THE BOTTOM LINE




1) Peak Oil is a geologic fact. Global warming involves atmospheric climate science, ocean science, etc. But the words that define them both also represent belief systems. Certain people will 'believe' they are real and others will not, largely irrespective of what future facts come to light.

2) Facts are important and we need to continue to analyze and accumulate them about the natural world. But knowing how our brain will respond to these facts is equally important.

3) Homo Sapiens has been the most successful species on the planet. On a planet now full of humans, our neural tendencies to look for magic solutions will be a blindspot that needs to be acknowledged. Seeking causative forces through scientific methods as opposed to offering correlation as proof is one important step.

4) The stigma of determinism and fear of sociobiology needs to be discarded. The answers to the large scale human problems cannot be solved by facts and science of the outside world alone - we need to incorporate facts about who we are into the equation. The nature and nurture debate has raged for too long without meaningful synergy - there is no nurture without nature. But nurture is how we are going to get through this energy bottleneck.

5) The mere recognition of our tendencies to react positively to authority figures, optimism, recent information, etc, gives our brain a neutralizing agent against these real human phenomena.

6)The motion picture "Homo Sapiens Sapiens" could be nearing a climax. Lets collectively write a happy ending.


References and Further Reading



(1) Shiv and Fedorikhin, "Heart and Mind in Conflict: Interplay of Affect and Cognition in Human Decision-making", Journal of Consumer Research, Vol 26 1999

(2) "Intertemporal Choice" (pdf) Chablis et Al, The New Palgrave Dictionary of Economics 2007 (to be published)



(3) Dawkins, R. The God Delusion 2006

(4) Newberg, Andrew, Why We Believe What We Believe Free Press, 2007

(5) Gilovich, T. How We Know What Isn't So - The Fallibility of Human Reason in Everyday Life 1991 Free Press

(6) Sapolsky, Robert Why Zebras Don't Get Ulcers

(7) Eichenbaum, H. “Belief and Knowledge as Forms of Memory in Schacter and Scarry (eds) Memory, Brain and Belief Harvard University Press 2000

(8) Jay Hansons easy to understand laymans description of the scientific method.

(9) Morrison, Reg The Spirit in the Gene

(10) Gazzaniga, Michael The Minds Past

(11) The Biology of Belief - How our Biology Biases our Beliefs and Perceptions

(12) Steadman, Lyle, Supernatural Natural Selection - Religion and Evolutionary Success. (After reading this book, I now doubt an outside observer can ever know with scientific certainty what someone else's belief is, which upsets the apple cart of behavioral scientists who do research on people based on their self-reporting of beliefs).

(13) Livingstone Smith, David Why We Lie - The Evolutionary Roots of Deception and the Unconscious Mind

Further Reading:
Cosmides and Tooby, The Adapted Mind
Taleb, Nissem, Fooled By Randomness (Thanks to Kurt Cobb who gifted me this book)
Pinker, Steven, How the Mind Works
Pinker, Steven, The Blank Slate
Konner, Melvin, The Tangled Wing
Boyer, Pascal, Religion Explained
Cialdini, Bob, Influence

EPILOGUE 12/10/2009



Last night I watched the movie 'Serendipity' (John Cusack, Kate Beckinsdale) with my best friend and their 11 year old daughter. The movie was a romance about fate, and how certain serendipitous events continued to occur over time to bring a man and woman together. My friend, a scientist, hated the movie, but her daughter loved it. They actually got in a big fight about it. The daughter claimed that it COULD happen that way, and the scientist claiming it would be akin to winning Powerball. I was stuck by how natural it was for the child to believe in portents, signs, and myths, without any training one way or the other.

Among other things, our brains are neural networks that locate patterns in large volumes of imprecise information - such pattern recognition takes place without conscious awareness. The human mind did not evolve to deal with things that change imperceptibly during a lifetime or that we cannot see or sense. It did not evolve to perform statistical calculations and model runs that include %s and other mathematical concepts of the last few centuries. We can do these things, but it requires immense discipline in a structured non-threatening environment. Given the nature of the biology of belief, it seems likely that myth is going to play a large role in our future. I am as yet unclear whether that is a constraint, an opportunity, or both.

Tuesday, December 25, 2007

The Oil of Christmas Future

In the last 9 years, holiday retail sales have increased 50% to $475 billion, a decent chunk of a $13 trillion total GDP. As we've discussed (in detail!) here over the past 2 years, oil is the lifeblood of our transportation system, and thus our economy. Below is a short Christmas post showing the trend of holiday sales, US oil production and US oil imports.



THE OIL OF CHRISTMAS PAST
US Holiday retail sales in Billions $ (left scale) (Source 1999-2006, Source 2007 estimate- National Retail Federation) plotted vs US domestic crude oil production (right scale) (1999 thru 9/2007 then extrapolated - Source - EIA) Click to enlarge



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This year, the neuro-marketers have spun their evolutionary algorithm-tripping magic yet again, as estimates for holiday retail sales are for a record $470 billion dollars. What are we really buying with that sum? Christmas has seemingly become a cultural routine with a bit of 'unexpected reward' at the apex, followed by a gradual let down. At least in US, it at times is reminiscent of a milder version of a Las Vegas air junket - on the way there everyone is happy and giddy and social and on the way back they are sleepy and crabby and poorer. This post is not advocating a dismantling of Christmas, though I must admit, Bill Mckibben's book, "Hundred Dollar Holiday" had an impact on me --"Enough" wasn't too shabby either - (IMO, Bill is a national treasure - we would do well to follow his inspired thoughts). In fact this post isn't advocating anything. I wanted to see the stats, which in retrospect are rather obvious, but may be lost amidst the holiday glitz and eggnog: United States christmas sales (and GDP for that matter) are a function of the oil we import, not the oil we produce. This should be no surprise - lets look at the numbers:

The Oil of Christmas Past






Annual % increase or decrease for holiday retail sales, US domestic oil production and US oil imports- Sources National Retail Federation and - EIA
Click to enlarge



The above graphic shows the annual % increase in holiday retail sales in green, and (in red) that domestic oil production has declined for 8 years in a row (as frequent TOD readers know, its been declining since 1971). It also shows the annual % increase in US oil imports (in black) has increased every year except 2002 and has gone from 3.9 billion barrels in 1999 to 5.1 billion barrels this year. US Christmas sales have increased in each and every year, so its rather self-evident that they are negatively correlated with domestic US production (r^2 of -.76). These sales (or purchases) are however, correlated with US oil imports (r^2 of .42). Just for perspective....

The Oil of Christmas Present








Oil Import Source - EIA, Source for GDP data
Click to enlarge



The above graphic shows the top 11 countries where we import oil. As of 2006, these countries comprised over 80% of our imports of over 5 billion barrels of crude oil compared to US production of 1.8 billion barrels. In order, Canada-17.2%, Mexico-12.4%, Saudi Arabia-10.7%, Venezuela 10.35%, Nigeria-8.1%, Algeria-4.8%, Iraq-4.1%, Angola-3.9%, Russia-2.7%, Virgin Islands-2.4% and Ecuador-2.0%. These countries are all lower than the US in terms of GDP. Our christmas gifts are the transmutation of our trading dollars for oil. We use the energy embodied in oil to leverage our system. (quick math: one barrel of oil costs $90 and has the latent joules of 25,000 man hours of labor, which at $20 per hour is $500,000. No wonder we want to import as much as we can!!!) (Note: The oil import arrows, weighted by barrel, have a trajectory ending in Waterloo, Iowa)

But lest we forget, GDP is not the neatly packaged summary stat of success some would like it to be. The nation of Bhutan, already has subsituted Gross National Happiness, as their national goal. Redefining Progress, and other institutions are working on different metrics of progress, like the Genuine Progress Indicator, which subtract things from GDP, like crime, pollution and long term environmental damage, in order to get a truer assessment of 'progress'.


(Source - Redefining Progress)




The Oil of Christmas Future



Christmas means many things to many people. At its core it used to be about religion, and to many its still about family and family traditions. I do miss my family who are spending Christmas, 'American Style', in North Carolina without me, but I don't miss the consumer froth. I am alone with my dog, snow-shoeing, some books and theoildrum, to be complemented by the arrival of my girlfriend tomorrow. This is the first year in 41 on the planet where I did not 'participate' in retail Christmas by buying a single gift. As a recovering Catholic and former large purveyor of things novel, unique and destined to wind up on entropy pile within 18 months, I have scaled back on both giving and receiving in recent holiday seasons. This year - nada - my only gift will be to my girlfriend, and that is not something I purchased.

As we consider the landscape for Christmas of the future, I hope we have the foresight and courage to care not only about 2008 and 2009 but also about 2028 and 2039, and the implications of our decisions for the children, animals and ecosystem dwellers not present in our policy and boardroom discussions. At some point, at the highest levels, we have to address what we get our energy for, and not blindly assume that demand is a natural law that increases at a 45 degree angle. Perhaps some consilience of the scientific disciplines might converge on an 'ends' goal closer to:

(B+U)/N, where B is basic needs, U is unexpected reward (novelty, excitement, etc) and N is entropy.

Or some such. Right now its 'Utility', with a denominator of dollars. And as my friend Jay is fond of saying, "Utility is just a 500lb woman eating another pie".

Please join us at theoildrum in 2008 as we provide a forum for facts, analysis and discussion about energy, and its role in our future. Where will the oil come from for the Christmas gifts of the future? Or will gifts be made with wind or corncobs or stranded gas? Perhaps we will change the definition of 'gifts' or require no gifts at all. Stay tuned.

And Happy Holidays..

Tuesday, September 11, 2007

Dammit! We Wasted a Day of Sunlight!

This year, for the first time I have attempted to grow a meaningful amount of my own food, at least enough to store during the winter and supplement (hopefully) fewer trips to the grocery store. I planted 38(!) heirloom tomato plants, which has proven to be a few too many. I literally have had days with bushel baskets of tomatoes. Some go to friends, many are dried, many are partially cooked in a solar oven, then frozen. This post is not about tomatoes or solar ovens, but about paradigm shifts and tipping points. It relates to a comment my Dad made.





First some background:

I go out in the morning and pick whatever tomatoes are ripe. On sunny days, I wash and core the tomatoes, then quarter them. In July, I wrote a post here about the Midwest Renewable Energy Fair, where I bought a Solar SOS oven. I really like it, and use it most days either to cook a snack or blanche/prepare some produce for storage. It can get to about 225 degrees and about 275 if you use the solar reflectors (not shown here)






I then put the tomatoes in the pot, put a little olive oil on them and some oregano and italian seasoning, close the lid of the solar oven, point it towards the sun and rotate clockwise 30 degrees, and leave to do whatever else is on my agenda for the day.




Several hours later (or as little as 2 hours), I return to juicy delicious tomato concoction, which I can eat with bread or such right then.




But lately, I've been dumping the contents in freezer bags and throwing them in my (energy star) freezer, to remind me of summer during the long Wisconsin winter. But heres the moral of this story.

My father is one of my favorite people, though politically and economically he hits it pretty straight down the fairway. He's a peak oil agnostic - though he does believe that oil is finite, he doesn't think there will be meaningful supply problems in his lifetime (on this we disagree). He is a nature lover, and very knowledgeable about the natural world, though I suspect this is related to the deer and ducks he shoots. He has always been a very hard worker - even if nothing really needs 'doing' he will find a 'project' of some sort to occupy his time, usually outdoors.

Though Ive thought Ive gotten under his skin the past year or so - warning of peak oil, explaining how dependent our system is on liquid fuels, articulating how fragile the food transport economy is, etc., perhaps there have been positive externalities from these talks. He helped me build a decent sized garden this year, and we have been storing (and eating) from the garden for the past few months.

(Punchline)Yesterday I was too busy to go use the solar oven. At about 3 in the afternoon my father returned from some various outdoor chores and inquired 'Whats in the solar oven today, Nat?" I told him I had forgotten to put anything in it - that I was too busy. His reply, (the title of this post), was a vehement "What?!! You've wasted a day of sunlight!!" And you could tell from his expression that he actually felt this as a 'loss'. (It's possible he was thinking that we'd now need to use the oven, which would cost money in KwH, as opposed to free sunlight)

After the initial shock and some chuckling, I thought a bit about this. My father is old school. For him to think in terms of 'energy' as a currency to pay attention to, is important. He is not in the peak oil crowd, but just a normal guy pursuing his lot. It gave me renewed confidence in our collective ability to change, when I heard those terms meaningfully spoken, from someone who has worked hard his entire life but never viewed 'sunlight' as something of value.

Today's societal metric of success is pecuniary bigger and better stuff. This metric was not one created overnight. Our world has been morphed by a collection of baby steps, too small to notice day by day, but quite significant when they accumulate over decades. So too, will the world of our children be created by such small steps. The change to a biophysical economy will also be a long process. To me, being chastised by my Dad that I wasted a day of sunlight, is a baby step in the right direction.

Im not suggesting that everyone be farmers. But to change small aspects of our lives to be more in sync with natural systems is an improvement in our demand infrastructure that will add up over time. These ‘food chores’ may appear wasteful to an economist. My time, knowledge and experience should be able to provide more societal utility that would translate to monetary value for me and more resources to society as a whole via my comparative advantage. Indeed, the amount of money I could make in the time it took me to procure one batch of tomatoes would probably be enough for me to have dried heirloom tomatoes to my door by federal express. But I a)enjoy spending my time this way, b)eat healthier unprocessed food, c)have more opportunity to create social capital with neighbors and d)have less opportunity to spend my time consuming other stuff...

Had my Dad not been traveling today, perhaps he would have told me I wasted a day of rain...;)

Sunday, July 29, 2007

The Implication of Biofuel Production for US Water Supplies

In addressing the supply side of oil and gas depletion, much hope has been put into the scaling of 'biofuels', by applying new (and old) technologies to annual crops to create ethanol or biodiesel, thus providing chemically viable alternatives to the transportation liquids derived from crude oil. Much of the biofuels debate thus far has focused on their lower energy balance, vis-a-vis crude oil. While this is important, analysis of the impacts on non-energy inputs and impacts should a massive scaling of biofuels occur, urgently needs to be discussed. The National Academy of Sciences recently published a report titled "Water Implications of Biofuel Production in the United States". The paper outlines impacts and limitations on both water availability and water quality that would follow the pursuit of a national strategy to replace liquid fossil fuels with those made from biomass.



Existing and planned ethanol facilities (2007) and their estimated total water use mapped
with the principal bedrock aquifers of the United States and total water use in year 2000.(Source USGS) Click to enlarge.




[break]

Some long time readers of theoildrum.com think we have beaten the corn ethanol horse to death. While this may appear true to certain camps (especially ethanol stock investors!), the fact remains that corn ethanol technology is still at the forefront of our nations mitigation responses to 'energy security' and Peak Oil. Production is slated to increase from 5 billion gallons last year to 35 billion gallons in a decade. The DOE projects that biofuels can provide us with 30% of our liquid fuel needs by 2030. However, given that we have limited amounts of high quality resources: crude oil, gasoline, fresh water, breathable air, healthy soil, productive ecosystems, etc., one of the highest policy priorities (in conjunction with attempts to change our conspicuous consumption paradigm) should be to establish the best use of these scarce resources to secure future energy flows. Two of the most precious of these are energy and water, and are the subject of todays post.

This post is a summary of an excellent recent report commissioned by the Natural Resource Council via the National Academy of Sciences, titled "The Implications of Biofuel Production for United States Water Supplies" It can be purchased in book form or downloaded as a pdf here. (Editors note: As I've discussed here recently, two University of Vermont colleagues and I have written a related paper highlighting the critical and limiting role that water will play in future energy production, particularly from bioenergy. "Burning Water - EROWI - The Energy Return on Water Invested", is currently (still) in the review/rejection/resubmittal process so I've been unable to post it here, even though it was written over a year ago). Since corn ethanol looks to still be a key policy issue in the upcoming Presidential primaries in Iowa, I thought a brief overview of this important NAS paper would be informative to our readers. The grey boxes and graphs are from the paper, "Water Implications of Biofuel Production in the United States", interweaved throughout the authors summary. The 'bottom line' and graphic at the end, are my own.


The Implications of Biofuel Production for United States Water Supplies



These were the scientists that oversaw/wrote the report:


COMMITTEE ON WATER IMPLICATIONS OF BIOFUELS PRODUCTION IN THE UNITED STATES

JERALD L. SCHNOOR, Chair, University of Iowa, Iowa City
OTTO C. DOERING III, Purdue University, West Lafayette, Indiana
DARA ENTEKHABI, Massachusetts Institute of Technology, Cambridge
EDWARD A. HILER, Texas A&M University, College Station
THEODORE L. HULLAR, Cornell University, Ithaca, New York
G. DAVID TILMAN, University of Minnesota, St. Paul


ABOUT BIOMASS, BIOFUELS AND WATER



Because of a strong U.S. national interest in greater energy independence, biofuels have become important liquid transportation fuels and are likely to remain so for the foreseeable future. Currently, the main biofuel in the United States is ethanol derived from corn kernels, with a very small fraction made from sorghum. Biodiesel from soybeans also comprises a small fraction of U.S. biofuels. Ethanol from “cellulosic” plant sources (such as corn stalks and wheat straw, native grasses, and forest trimmings) is expected to begin commercially within the next decade.



US Production of Biofuels from Various Feedstocks 2006 Click to enlarge.




Recent increases in oil prices in conjunction with subsidy policies have led to a dramatic expansion in corn ethanol production and high interest in further expansion over the next decade. President Bush has called for production of 35 billion gallons of ethanol annually by 2017, which, if achieved, would comprise about 15 percent of U.S. liquid transportation fuels. This goal is almost certain to result in a major increase in corn production, at least until marketable future alternatives are developed.

Among the possible challenges to biofuel development that may not have received appropriate attention are its effects on water and related land resources. The central questions are how water use and water quality are expected to change as the U.S. agricultural portfolio shifts to include more energy crops and as overall agricultural production potentially increases. Such questions need to be considered within the context of U.S. policy and also the expected advances in technology and agricultural practices that could help reduce water impacts.

To help illuminate these issues, the Water Science and Technology Board (WSTB) of the National Research Council held a colloquium on “Water Implications of Biofuels Production in the United States” in Washington, D.C., on July 12, 2007, which was attended by more than 130 people from federal and state government, non-governmental organizations, academia, and industry. WSTB established a committee to organize and host the colloquium and to develop this report (see Box 1-1). This report draws some conclusions about the water implications of biofuels productions based on discussions at the colloquium, written submissions of participants, the peer-reviewed literature, and the best professional judgments of the committee.

Water is an increasingly precious resource used for many purposes including drinking and other municipal uses, hydropower, cooling thermoelectric plants, manufacturing, recreation, habitat for fish and wildlife, and agriculture. The ways in which a shift to growing more energy crops will affect the availability and quality of water is a complex issue that is difficult to monitor and will vary greatly by region.

In some areas of the country, water resources already are significantly stressed. For example, large portions of the Ogallala (or High Plains) aquifer, which extends from west Texas up into South Dakota and Wyoming, show water table declines of over 100 feet. Deterioration in water quality may further reduce available supplies. Increased biofuels production adds pressure to the water management challenges the nation already faces.

Some of the water needed to grow biofuel crops will come from rainfall, but the rest will come from irrigation from groundwater or surface water sources. The primary concern with regard to water availability is how much irrigation will be required—either new or reallocated— that might compete with water used for other purposes. Irrigation accounts for the majority of the nation’s “consumptive use” of water—that is the water lost through evaporation and through plant leaves that does not become available for reuse.



FIGURE 1-1 The agricultural water cycle. Inputs to a crop include rainfall and irrigation from surface
water and groundwater. Some water is “consumed” (that is, incorporated in the crop or evapotranspired),
some returns to surface waterbodies for human or ecological use downstream, and some infiltrates into
the ground. Click to enlarge.




Figure 1-1 makes it clear that crop water may originate from one source, such as rain or groundwater, and be discharged to another, such as surface water. Precipitation, groundwater, and surface water sources—and groundwater and surface water discharges—are not only viewed differently in water law and policy, but also have different consequences for long-term sustainable use of the resource base. Since groundwater accounts for almost all of the long-term storage of water on the continents, extracting groundwater for irrigation that is subsequently discharged to streams may decrease the water available for future users of the aquifer.


The question of whether more or less water will be applied to biofuel crops depends on what crop is being substituted and where it is being grown. For example, in much of the country, the crop substitution to produce biofuel will be from soybeans to corn. Corn generally uses less water than soybeans and cotton in the Pacific and Mountain regions, but the reverse is true in the Northern and Southern Plains, and the crops use about the same amount of water in the North Central and Eastern regions.



FIGURE 1-2 Irrigated land in the United States. Note that most of this is located in the more arid regions
of the country. SOURCE: N. Gollehon, USDA ERS, written commun., July 12, 2007. Based on data
from U.S. Department of Agriculture (USDA) Economic Research Service (ERS) Census of Agriculture.. Click to enlarge.





Understanding water quantity impacts is dependent on understanding the agricultural water cycle depicted in Figure 1-1. Crops can be either rainfed or irrigated (see Figure 1-2). Irrigation water can come from groundwater or surface water, and groundwater can be withdrawn from either a surficial aquifer (connected directly to the surface) or a confined aquifer (overlain by a low permeability layer, or aquitard, such as clay). Some of the applied water is incorporated into the crop, but most of it leaves the fields as (1) evaporation from the soil and transpiration from plants (called evapotranspiration or ET), (2) runoff to rivers and streams (sometimes called “return flow”), and (3) infiltration to the surficial aquifer. The water that is incorporated into the crops or lost to evapotranspiration is referred to as “consumptive use,” because it cannot be reused for another purpose in the immediate vicinity. Rates of ET vary greatly by the type of crop. During a growing season, a leaf will transpire many times more water than its own weight. An acre of corn gives off about 3,000- 4,000 gallons of water each day while a large oak tree can transpire 40,000 gallons per year (USGS, 2007). Grasses that might be in cellulosic production have a slightly higher ET rate than corn, but considerably a lower ET rate than trees.



Projection of ethanol production by feedstock assuming cellulose-to-ethanol production
begins in 2015. Dedicated energy crops refer to those grown solely for energy production.
SOURCE: D. Ugarte, University of Tennessee Click to enlarge.





Distribution of the production of cellulosic materials in dry tons by the year 2030.
SOURCE: D. Ugarte, University of Tennessee Click to enlarge.




There are many uncertainties in estimating consumptive water use of the biofuel feedstocks of the future. Water data are less available for some of the proposed cellulosic feedstocks—for example, native grasses on marginal lands—than for widespread and common crops such as corn, soybeans, sorghum, and others. Neither the current consumptive water use of the marginal lands nor the potential water demand of the native grasses is well known. Further, while irrigation of native grass today would be unusual, this could easily change as production of cellulosic ethanol gets underway.

CROP WATER AVAILABILITY AND USE




FIGURE 2-1 Regional irrigation water application for various crops for six regions of the United States.
Irrigation application is normalized by area, and is in feet. SOURCE: N. Gollehon, U.S. Department of
Agriculture (USDA) Economic Research Service (ERS), written commun., July 12, 2007. Based on data
from USDA Census of Agriculture.Click to enlarge.



Shifting land from an existing crop (or noncrop plant species) to a crop used in biofuel production has the potential to change irrigation water use, and thus the local water availability. Conversion to the different type of biomass will result in increased water use in some cases, in other cases a decrease. As an example, in much of the country, the crop substitution is from soy to corn. The regional effects of this can be seen in Figure 2-1. Corn generally uses less water than soybeansand cotton in the Pacific and Mountain regions. The reverse is true in the Northern and Southern Plains, and the crops use about the same amount of water in the North Central and Eastern regions. Changes in agricultural water use would generally parallel these trends. Another example is in Northern Texas, where annual evapotranspiration (ET) rates per year for alfalfa, corn, cotton, and sorghum are estimated to be about 1,600, 760, 640, and 580 mm (63, 30, 25, and 23 inches), respectively. Therefore, regional water loss to ET will likely decrease if alfalfa acreage is converted to corn, but increase if cotton or sorghum is converted.


FIGURE 2-2 State-by-state water requirements in 2003 of irrigated corn (gallons of irrigation water per
bushel). SOURCE: N. Gollehon, USDA ERS, Based on data from
2003 Farm and Ranch Irrigation Survey (USDA, 2003).
Click to enlarge.





Given the regional differences in rainfall and groundwater storage, the feasibility and sustainability of biofuel crop production as a function of water availability may vary significantly by region. Figure 2-2 shows the state-by-state water requirement of irrigated corn in the continental United States. It demonstrates that the amount of rainfall and other hydroclimate conditions in a given area causes significant (10-fold) variations in the water requirement for the same crop. Clearly there will be geographic limits on certain kinds of biofuels feedstock simply based on their water requirements.


In the next 5 to 10 years, increased agricultural production for biofuels will probably not alter the national-aggregate view of water use. However, there are likely to be significant regional and local impacts where water resources are already stressed.

Water Quality Impacts




FIGURE 3-1. Comparison of fertilizer (top) and pesticide (bottom) application rates for corn, soybean,
and low-input high-diversity (LIHD; “biomass” in the figure) mixtures of native grassland perennials.
Fertilizer and pesticide application rates are U.S. averages. SOURCE: Tilman et al. (2006).
Click to enlarge.



Biomass feedstocks such as corn grain, soybeans, and mixed-species grassland biomass differ in current or proposed application rates of fertilizers and of pesticides. Of these three potential feedstocks, the greatest application rates of both fertilizer and pesticides per hectare are for corn (Figure 3-1). Phosphorus application rates are somewhat lower for soybeans than for corn. Nitrogen application rates are much lower for soybeans than for corn because soybeans, which are legumes, fix their own nitrogen from the atmosphere. Pesticide application rates for soybean are about half those for corn. The native grasses compare highly favorably to corn and soy for both fertilizers and pesticides, with order-of-magnitude lower application rates.





FIGURE 3-2 (left) N fertilization rates and stream concentrations of nitrate. (right) Atrazine
application rates and stream concentrations of atrazine. FIGURE SOURCE: J. Ward, U.S.
Geological Survey.
Click to enlarge.




The impacts of these differences in inputs can be visualized nationally by comparing N inputs (such as fertilizer and manure) and the concentrations of nitrate in stream water (Figure 3-2, left). There are similar patterns for stream concentrations of atrazine, a major herbicide used in corn cultivation (Figure 3-2, right), although the environmental effects of pesticides in current use are difficult to decipher. Both of these maps show that regionally the highest stream concentrations occur where the rates of application are highest, and that these rates are highest in the U.S. “Corn Belt.”




FIGURE 3-3 Dissolved oxygen contours (in milligrams per liter) in the Gulf of Mexico, July 21-28,
2007. SOURCE: Slightly modified from http://www.gulfhypoxia.net/shelfwide07/PressRelease07.pdf.

Click to enlarge.




The effects of biomass production on the nation’s coastal and offshore waters may be considerable. Nitrogen in the Mississippi River system is known to be the major cause of an oxygen-starved “dead zone” in the Gulf of Mexico (Figure 3-3), which in 2007 was the third largest ever mapped (http://www.gulfhypoxia.net). The condition known as hypoxia (low dissolved oxygen) occurs because elevated N (and, to a lesser extent, P) loading into the Gulf leads to algal blooms over a large area. Upon the death of these algae, they fall to the bottom and their decomposition consumes nearly all of the oxygen in the bottom water. This is lethal for most fish and other species that live there.



FIGURE 3-5 Environmental effects from the complete production and combustion lifecycles of corn
grain ethanol and soybean biodiesel. The figure shows the application of both (a) fertilizers and (b) and
pesticides, per unit of net energy gained from biofuel production. SOURCE: Hill et al., 2006
Click to enlarge.



There are many possible metrics, but an index that builds on the work shown in Figure 3-1 is inputs of fertilizers and pesticides per unit of the net energy gain captured in a biofuel. To estimate this first requires calculation of a biofuel’s net energy balance (NEB), that is, the energy content of the biofuel divided by the total fossil energy used throughout the full lifecycle of the production of the feedstock, its conversion to biofuel, and transport. U.S. corn ethanol is most commonly estimated to have a NEB of 1.25 to 1.3, that is, to return about 25-30 percent more energy, as ethanol, than the total fossil energy used throughout its production lifecycle. The NEB estimated for U.S. soybean biodiesel is about 1.8 to 2.0, or about a 100 percent net energy gain. Switchgrass ethanol via fermentation is projected to be much higher—between 4 and 15. Similarly high are the estimates for (a) cellulosic ethanol and (b) synthetic gasoline and diesel from certain mixtures of perennial prairie grasses, forbs, and legumes (NEB=5.5 and 8.1, respectively). Per unit of energy gained, corn ethanol and soybean biodiesel have dramatically different impacts on water quality. When fertilizer and pesticide application rates (Figure 3-1) are scaled relative to the NEB values of these two biofuels, they are seen to differ dramatically (Figure 3-5). Per unit of energy gained, biodiesel requires just 2 percent of the N and 8 percent of the P needed for corn ethanol. Pesticide use per NEB differs similarly. Low input high-diversity prairie biomass and other native species would also compare favorably relative to corn using this metric. This is just one possible metric of biofuels’ impact on water quality. Other measures might incorporate land requirements per unit of biofuel, soil erosion, or impacts of the associated biorefinery


Fertilizers applied to increase agriculture yields can result in excess nutrients (nitrogen [N] and to a lesser extent, phosphorous [P]) flowing into waterways via surface runoff and infiltration to groundwater. Nutrient pollution can have significant impacts on water quality. Excess nitrogen in the Mississippi River system is known to be a major cause of the oxygen starved “dead zone” in the Gulf of Mexico, in which many forms of marine life cannot survive. The Chesapeake Bay and other coastal waterbodies also suffer from hypoxia (low dissolved oxygen levels) caused by nutrient pollution. Over the past 40 years, the volume of the Chesapeake Bay’s hypoxic zone has more than tripled. Many inland lakes also are oxygen starved, more typically due to excess levels of phosphorous.

Corn, soybeans, and other biomass feedstocks differ in current or proposed rates of application of fertilizers and pesticides. One metric that can be used to compare water quality impacts of various crops are the inputs of fertilizers and pesticides per unit of the net energy gain captured in a biofuel. Of the potential feedstocks, the greatest application rates of both fertilizer and pesticides per hectare are for corn. Per unit of energy gained, biodiesel requires just 2 percent of the N and 8 percent of the P needed for corn ethanol. Pesticide use differs similarly. Low-input, high-diversity prairie biomass and other native species would also compare favorably relative to corn using this metric.

Another concern with regard to water quality is soil erosion from the tillage of crops. Soil erosion moves both sediments and agricultural pollutants into waterways. There are various farming methods that can help reduce soil erosion. However, if biofuel production increases overall agricultural production, especially on marginal lands that are more prone to soil erosion, erosion problems could increase. An exception would be native grasses such as switchgrass, which can reduce erosion on marginal lands.

All else being equal, the conversion of other crops or non-crop plants to corn will likely lead to much higher application rates of N, which could increase the severity of the nutrient pollution in the Gulf of Mexico and other waterways. However, it should be noted that recent advances in biotechnology have increased grain yields of corn per unit of applied N and P.


REDUCING WATER IMPACT THROUGH AGRICULTURAL PRACTICES



There are many agricultural practices and technologies that, if employed, can increase yield while reducing the impact of crops on water resources. Many of these technologies have already been developed and applied to various crops, especially corn, and they could be applied to cellulosic feedstocks. Technologies include a variety of water-conserving irrigation techniques, soil erosion prevention techniques, fertilizer efficiency techniques, and precision agriculture tools that take into account site-specific soil pH (acidity, alkalinity), soil moisture, soil depth, and other measures. Best Management Practices (BMPs) are a set of established methods that can be employed to reduce the negative environmental impacts of farming. Such practices can make a large, positive environmental impact. For example, in 1985, incentives were put in place to encourage adoption of conservation tillage practices. According to data from the National Resources Inventory (NRI), maintained by the Natural Resources Conservation Service, overall annual cropland erosion fell from 3.06 billion tons in 1982 to about 1.75 billion tons in 2003, a reduction of over 40 percent (http://www.nrcs.usda.gov/TECHNICAL/NRI/).

In addition, biotechnologies are being pursued that optimize grain production when the grain is used for biofuel. These technologies could help reduce water impacts by significantly increasing the plants’ efficiency in using nitrogen, drought and water-logging tolerance, and other desirable characteristics.

WATER IMPACTS OF BIOREFINERIES





FIGURE 5-2 The overall water balance of a typical 50 million gallon per year corn-based Dry Mill
ethanol production facility. All figures are in gallons per hour. SOURCE: Courtesy of Delta-T Corp.
Click to enlarge.



Assuming the common figure of about 2.7 gallons of ethanol from one bushel of corn, 2,100 gallons of water/bushel * 1 bushel/2.7 gallon of ethanol = about 780 gallons of water per gallon of ethanol. (Additionally), current estimates of the consumptive water use from biorefinery facilities are in the range of 4 gallons of water per gallon of ethanol produced (gal/gal) (Pate et al., 2007). For perspective, consumptive water use in petroleum refining is about 1.5 gal/gal. Overall water use in biorefineries may be as high as 7 gal/gal, but this number has been consistently decreasing over time and as of 2005 was only slightly over 4 gal/gal in 2005. Thus for a 100 million gallon per year plant, a little over 400 million gallons of water per year would be withdrawn from aquifers or surface water sources (1.1 million gallons per day). The total water requirements for ethanol from cellulose are thought to be large—about 9.5 gal/gal, but this likely will decline as efficiency increases with experience at cellulosic-ethanol plants.



Existing and planned ethanol facilities (2007) and their estimated total water use mapped
with the principal bedrock aquifers of the United States and total water use in year 2000. Click to enlarge.



Siting of some ethanol plants is occurring where the water resource is already under duress. Figure 5-3 shows, for example, that many bioethanol plants that each require 0.1-1.0 million gallons per day are located on the High Plains aquifer. This aquifer is currently being pumped at a rate of more than 1.5 billion gallons per day for agriculture, municipalities, industry, and private citizens. Thus, 15 million gallons per day for bioethanol would represent only 1% of total withdrawals. But it is an incremental withdrawal from an already unsustainable resource. Current water withdrawals are much greater than the aquifer’s recharge rate 0.02 to 0.05 foot per year in south-central Nebraska, resulting in up to 190-foot decline in the water table over the past 50 years. It is equivalent to “mining” the water resource, and the loss of the resource is essentially irreversible.


All biofuel facilities require process water to convert biomass to fuel. Water used in the biorefining process is modest in absolute terms compared to the water applied and consumed in growing the plants used to produce ethanol. However, because this water use is concentrated into a smaller area, its effects can be substantial locally. A biorefinery that produces 100 million gallons of ethanol per year would use the equivalent of the water supply for a town of about 5,000 people. Consumptive use of water in biorefineries is largely due to evaporation losses from cooling towers and evaporators during the distillation of ethanol following fermentation. However, consumptive use of water is declining as ethanol producers increasingly incorporate water recycling and develop new methods of converting feedstocks to fuels that increase energy yields while reducing water use.



Water Quality of Waste Streams from Two Existing Ethanol Facilities in Iowa
Click to enlarge.




Ethanol plants have various waste streams. First, salts build up in cooling towers and boilers due to evaporation and scaling, and must be periodically discharged (“blowdown”). Second, the technologies used to make the pure water needed for various parts of the process (e.g., reverse osmosis [RO], ion exchange, iron removal; not shown in Figure 5-1) result in a brine effluent. Under the National Pollutant Discharge Elimination System (NPDES) permits are required from the states to discharge this effluent. These permits often cover total dissolve solids (TDS), acidity, iron, residual chlorine, and total suspended solids. Table 5-1 gives chemical characteristics of waste water from the RO operation and from the cooling tower blowdown for two plants in Iowa. Some violations of NPDES permits have been reported in Iowa and Minnesota from ethanol facilities, primarily for TDS.


KEY POLICY IMPLICATIONS


Subsidy policies for corn ethanol production coupled with low corn prices and high oil prices have driven the dramatic expansion of corn ethanol production over the past several years. These policies have been largely motivated to improve energy security and provide a cleanburning additive for gasoline. As biofuel production expands, and particularly as new cellulosic alternatives are developed, there is a real opportunity to shape policies to also meet objectives related to water use and quality impacts.

As total biofuels production expands to meet national goals, the long-term sustainability of the groundwater and surface water resources used for biofuel feedstocks and production facilities will be key issues to consider. From a water quality perspective, it is vitally important to pursue policies that prevent an increase in total loadings of nutrients, pesticides, and sediments to waterways. It may even be possible to design policies in such a way to reduce loadings across the agricultural sector, for example, those that support the production of feedstocks with lower inputs of nutrients.

Cellulosic feedstocks, which have a lower expected impact on water quality in most cases (with the exception of the excessive removal of corn stover from fields without conservation tillage), could be an important alternative to pursue, keeping in mind that there are many uncertainties regarding the large-scale production of these crops. There may be creative alternatives to a simple subsidy per gallon produced that could help protect water quality. Performance subsidies could be designed to be paid when specific objectives such as energy conversion efficiency and reducing the environmental impacts of feedstock production— especially water quality—are met.

Biofuels production is developing within the context of shifting options and goals related to U.S. energy production. There are several factors to be considered with regard to biofuels production that are outside the scope of this report but warrant consideration. Those factors include: energy return on energy invested including consideration of production of pesticides and fertilizer, running farm machinery and irrigating, harvesting and transporting the crop; the overall “carbon footprint” of biofuels from when the seed is planted to when the fuel is produced; and the “food vs. fuel” concern with the possibility that increased economic incentives could prompt farmers worldwide to grow crops for biofuel production instead of food production.


CONCLUSIONS



Currently, biofuels are a marginal additional stress on water supplies at the regional to local scale. However, significant acceleration of biofuels production could cause much greater water quantity problems depending on where the crops are grown. Growing biofuel crops in areas requiring additional irrigation water from already depleted aquifers is a major concern.

The growth of biofuels in the United States has probably already affected water quality because of the large amount of N and P required to produce corn. The extent of Gulf hypoxia in 2007 is among the three largest mapped to date, and the amount of N applied to the land is also at or near its highest level. If not addressed through policy and technology development, this effect could accelerate as biofuels expand to 15 percent of domestic usage to meet President Bush’s 2017 goal, or to 30 percent of domestic fuel usage as proposed by President Bush as the ultimate goal.

If projected future increases in the use of corn for ethanol production do occur, the increase in harm to water quality could be considerable. Expansion of corn on marginal lands or soils that do not hold nutrients can increase loads of both nutrients and sediments. To avoid deleterious effects, future expansions of biofuels may need to look to perennial crops, like switchgrass, poplars/willows, or prairie polyculture, which will hold the soil and nutrients in place.

To move toward a goal of reducing water impacts of biofuels, a policy bridge will likely be needed to encourage development of new technologies that support cellulosic fuel production and develop both traditional and cellulosic feedstocks that require less water and fertilizer and are optimized for fuel production. Policies that better support agricultural best practices could help maintain or even reduce water quality impacts. Policies which conserve water and prevent the unsustainable withdrawal of water from depleted aquifers could also be formulated.


end National Academy of Sciences
begin Nate...




THE BOTTOM LINE



As discussed often here in the past, biofuels not only have a much lower energy return vis-a-vis conventional crude, but have between one and two orders of magnitude lower in power density, (or how much energy we get per unit of land). Furthermore, in our 'Burning Water' paper, (and alluded to here in this NAS report), biofuels also require significantly more water than even the least efficient fossil fuel systems. There are also concerns about pesticides, nitrate and other environmental impacts. So when replacing energy with a 'substitute', all other things do not usually remain equal. I commend the National Academy scientists for highlighting what will be a central issue in upcoming natural resource science - that of systems, and tradeoffs.

It is highly likely we will have liquid fuel shortages in the not too distant future, either via higher prices, or through actual unavailability or rationing. The chart below (thanks Khebab) shows the progression of year over year declines, in different colored lines, of United States oil production. The trend is reasonably clear. We have found the cheap and easy oil.




Energy and water are but 2 of the central inputs that power our modern society. Many of the key resources are either not currently valued by the market system, or may give too late a market signal of scarcity for effective mitigation. The figure above (not from the NAS report..;) gives a conceptual example of potential tradeoffs that a concerted efforts to increase liquid fuel production (or any limiting variable that has linkages to other limiting inputs) might engender. The columns on the left in blue (and red) are when we are in a perceived liquid fuels shortfall. The columns in purple are hypothetical amounts of resources remaining after a portion has been devoted to an 'increase liquid fuel policy'. Focusing on the limiting input du-jour risks pulling in more resources from the periphery which are currently non-limiters. As can be visualized, successful addition of the variable in shortage may come at a cost, which might not be immediately visible or financially recognized, but a cost nonetheless.

We CAN increase our internal production of transportation liquids. In addition to ethanol and biodiesel, we can use coal-to-liquids via Fischer Tropsch; we can drill the Arctic or Alaska Wildlife Refuge; we can expand land to dedicated energy crops, etc. A joint study of the U.S. Department of Energy and the U.S. Department of Agriculture concludes that the United States could produce 60 billion gallons of ethanol by 2030 through a combination of grain and cellulosic feedstocks, enough to replace 30% of projected U.S. gasoline demand. Scientists and policymakers should be asking them 'at what cost'? When they reply XX billions, the comeback should be 'we didn't mean in $ terms-what are the costs in other scarce inputs needed by society?'. In robbing Peter to pay Paul, we have to realize that Paul is pretty insatiable. Who will we rob after Peter?

The subject of the origins of exponential growth, habituation and "Pauls" addiction to oil will be the subject of next weeks post.