Showing posts with label Green Revolution. Show all posts
Showing posts with label Green Revolution. Show all posts

Monday, June 15, 2015

The End of Plenty


Nothing is more precious than balance, stability, and sustainability.  Today, we’re hanging by our fingernails to a skyrocket of intense insane change, and it’s the only way of life we’ve ever known.  Joel Bourne has spent his life riding the rocket.  He grew up on a farm, and studied agronomy at college, but sharp changes were causing many farmers to go bankrupt.  Taking over the family farm would have been extremely risky, so he became a writer for farm magazines.  Later, he was hired by National Geographic, where he has spent most of his career.

In 2008, he was assigned to cover the global food crisis, and this project hurled him into full awareness of the big picture.  The Green Revolution caused food production to skyrocket, and world population doubled in just 40 years.  Then, the revolution fizzled out, whilst population continued to soar.  Demographers have told us to expect another two or three billion for dinner in 2050.  Obviously, this had the makings of an excellent book, so Bourne sat down and wrote The End of Plenty.

The subtitle of his book is “The Race to Feed a Crowded World,” not “The Race to Tackle Overpopulation.”  A growing population thrills the greed community, and a diminishing herd does not.  Overpopulation is a problem that can be solved, and will be, either by enlightened self-restraint, by compulsory restraint, or, most likely, by the vigorous housekeeping of Big Mama Nature.  Feeding the current population is thrashing the planet, and feeding even more will worsen everything, but this is our primary objective.  We are, after all, civilized people, and enlightened self-restraint is for primitive savages who live sustainably in roadless paradises.

As incomes rise, the newly affluent are enjoying a more luxurious diet.  To satisfy this growing demand, food production must double by 2050.  “We’ll have to learn to produce as much food in the next four decades as we have since the beginning of civilization.”  Meanwhile, agriculture experts are not bursting with brilliant ideas.  “Producing food for more than 9 billion people without destroying the soil, water, oceans, and climate will be by far the greatest challenge humanity has ever faced.”  Bourne’s book describes a number of gigantic obstacles to doubling food production — or even maintaining current production.

Automobiles are more addictive than crystal meth.  Europeans guzzle biodiesel made from palm oil.  Americans are binging on corn ethanol.  The 2005 Energy Tax Act mandated the addition of biofuels to gasoline.  From 2001 to 2012, the ethanol gold rush drove corn prices from $1.60 to $8.28.  Not coincidentally, in 2008 food riots erupted in twenty countries.  The Arab Spring revolts began in 2011, a year of record harvests and record prices.  Today, almost 40 percent of the U.S. corn crop is being fed to motor vehicles — enough corn to feed everyone in Africa.  Experts predict that we’ll need four times more land for biofuels by 2030.

Crops require cropland, and almost all places ideal for farming are already in use, buried under roads and cities, or have been reduced to wasteland.  Every year, a million hectares (2.4 million acres) of cropland are taken out of production because of erosion, desertification, or development.  So, 90 percent of the desired doubling in food production will have to come from current cropland.  At the same time, the farm soils still in production have all seen better days.  Agriculture is an unsustainable activity that normally depletes soil quality over time.

Another obstacle is yield, the amount of food that can be produced on a hectare of land.  Between 1961 and 1986, cereal yields rose 89 percent, due to the Green Revolution.  But per capita grain production peaked in 1986.  Since then, population has been growing faster than yields.  Crop breeding experts are wringing their hands.  A number of indicators suggest that we are heading for “agricultural Armageddon,” but the experts remain silent, praying for miracles.  The biotech industry is focused on making huge profits selling seeds and poisons, not boosting yields.

Agriculture guzzles 70 percent of the water used by humans.  Irrigated fields have yields that are two to three times higher than rain fed fields.  Demand for water is projected to increase 70 to 90 percent by 2050, but water consumption today is already unsustainable.  “Over the next few decades, groundwater depletion could cripple agriculture around the world.”

Crop production is already being affected by climate change.  Research indicates that further warming will take a substantial toll on crop yields.  If temperatures rise 4°C, maybe half the world’s cropland will become unsuitable for agriculture.  Rising sea levels will submerge large regions currently used for rice production.

Meanwhile, population continues to grow, and some hallucinate it will grow until 2100.  In a nutshell, our challenge is “to double grain, meat, and biofuel production on fewer acres with fewer farmers, less water, higher temperatures, and more frequent droughts, floods, and heat waves.”  This must be done “without destroying the forests, oceans, soils, pollinators, or climate on which all life depends.”

Ladies and gentlemen, this is an outstanding book, and easy to read.  Most people have blind faith that innovation will keep the supermarkets filled forever.  Those who actually think a bit are focusing on stuff like solar panels, wind turbines, and electric cars.  Food is something we actually need, and it gets far less attention than it deserves.  By the end of the book, it’s impossible to conclude that everything is under control, and that our wise leaders will safely guide us through the storm.  Surprisingly, a few additional super-threats were not discussed in the book.

Bourne mentions that insects and weeds are developing resistance to expensive GMO wonder products, but stops there.  Big Mama Nature is the mother of resistance.  She never tires of producing new forms of life that are resistant to every toxin produced by science: insecticides, herbicides, fungicides, rodenticides, antibiotics.  Every brilliant weapon we invent will only work temporarily.  In terms of breeding new varieties of plants that are resistant to the latest biological threat, there are only so many tricks available.  The low-hanging fruit has already been used.  Just three plants enable the production of 80 to 90 percent of the calories we consume: corn, rice, and wheat. 

The global food system is heavily dependent on petroleum fuels, which are finite and nonrenewable.  There is no combination of biofuels or alternative energy that will come anywhere close to replacing oil.  In the coming decades, we will be forced to return to a muscle-powered food system.  We are entirely unprepared for this, and the consequences will be very exciting for people who eat food.

There is a similar issue with fertilizer.  Of the three primary plant nutrients, reserves of mineral phosphorus will be depleted first, and this will blindside conventional agriculture — no phosphorus, no life.  A hundred years ago, Chinese farmers used zero commercial fertilizer.  Every morning, long caravans of handcarts hauled large jugs of sewage from the cities to the fields.

In the end, readers are presented with two paths to the future.  One path looks like a whirlwind of big trouble, and this is not just a comic book doomer fantasy — it’s already blowing and rumbling.  The other path is happy and wonderful.  Humans will discover their legendary big brains, turn them on, shift industrial civilization into reverse, speed down the fast lane to genuine sustainability, and live happily ever after.  Place your bets. 

Bourne, Joel K., The End of Plenty: The Race to Feed A Crowded World, W. W. Norton & Company, New York, 2015.

Friday, December 5, 2014

The Population Explosion


Following the publication of The Population Bomb in 1968, the new predicament of overpopulation was inducted into our gruesome mob of predicaments.  World leaders snapped to attention, contemplated their options, realized that promoting population control was political suicide, and chose to step around the messy issue.  The house was not on fire today, just some smoke.

The big exception was the Chinese, whose one-child program successfully prevented 350 million births.  It was sometimes heavy-handed, but ignoring runaway growth would have guaranteed a super-heavy disaster.  China had the same amount of cropland as the U.S., but four times the population, and the cropland was wearing out after centuries of organic farming.  The last thing they needed was more mouths to feed.

In 1968, there were 3.5 billion people, twenty years later 5.3 billion.  Paul and Anne Ehrlich realized that The Population Bomb had failed to inspire miraculous change, so they wrote The Population Explosion (1990).  The problems they had predicted earlier were now appearing in many places, and a new generation needed an excellent primer on overpopulation and its side effects.  This second book did not repeat the 1968 error of predicting timeframes.  It was much more substantial than the first, and is still illuminating to read today.  Readers will recognize that the raging bloody chaos of the twenty-first century is an obvious consequence of soaring overshoot.

In this second act, the Ehrlichs took readers into the ecological equivalent of an amusement park funhouse, where loud and scary ghouls and goblins frighten us at every turn — except that their eco-spooks were genuinely dangerous.  The trends in food production and population were not in any way encouraging.  In 1970, population was growing by 75 million per year.  By 1990, it was 95 million.

At the same time, staggering amounts of irreplaceable topsoil were being lost, aquifers were being depleted, and fields were being taken out of production because of salinization and waterlogging.  The Green Revolution surge in food production was peaking, whilst population continued to soar, setting the stage for crisis.  “We shouldn’t delude ourselves: the population explosion will come to an end before very long.”

North America produced 75 percent of the world’s grain exports, and the U.S. was the number one exporter.  In 1988, a severe drought reduced U.S. grain production from 300 to 200 million tons.  That year, Americans consumed more than they produced.  A stable climate was essential for crop production.  So was healthy topsoil, which was being lost at an estimated 24 to 26 billion tons per year.  So was cheap and abundant oil, and water for irrigation.

In 1990, the Ehrlichs were aware that global warming might become a serious problem some day, one that might disrupt agriculture, and spark major famines.  They knew that fossil energy was finite, and that we would be insane to burn it all.  But peak oil and climate change were not presented as current threats in this book.  The inevitable return to muscle-powered agriculture is certain take a huge bite out of food production, and an unstable climate will ensure unstable harvests.

Most of humankind lives in the northern hemisphere, in regions having a temperate climate.  These regions are where most of the world’s grain is produced.  Tropical regions are far more troublesome to farm, and they are home to most of the world’s hungry folks.  There is no winter to provide pest control.  Forest soils are typically thin.  Rains are often heavy, sweeping away soil, fertilizer, and pesticides.  The magic seeds of the Green Revolution do not thrive in the humid tropics.

A fascinating chapter reveals why it is so hard for us to take action on long-term issues.  It’s almost impossible to see, hear, touch, or smell greenhouse gasses, overpopulation, acid rain, aquifer depletion, soil destruction, or mass extinction.  These are not sudden, attention-grabbing events, like a charging rhino.  They are slow motion processes that are mostly perceptible via charts, graphs, and books.  We are tropical primates, and we evolved to pay close attention to the here and now, in the immediate vicinity.

Slow motion threats cannot be chased away with complaints or magical thinking.  We can’t seem to get interested in making enormous sacrifices today in the hope of theoretical benefits somewhere down the road, maybe.  Exponential growth can blindside us, because it’s slow at first, and gradually spins into a devastating whirlwind.  Evolution did not prepare us for civilized living.

The Ehrlichs are more homocentric than ecocentric.  Here’s a real boner: “The population problem is rooted in one of humanity’s greatest triumphs — overcoming natural controls on population size: predators, starvation, and disease.”  Triumphs?  Overcoming natural controls was the blunder that hurled us onto the path of doom!  Replace “triumphs” with “mistakes” and the line makes sense.  Natural controls work beautifully.  There are not 7.2 billion chimps staring at cell phones.

From 1968 to today, the main goal of the Ehrlichs has been to prevent the collapse of our global civilization.  In The Population Explosion, they fire hose readers with torrents of grim information.  Readers are likely to conclude that today’s global civilization is already far beyond the point of no return.  The solutions recommended require countless miracles, by next year, if possible — world leaders fully cooperating to rapidly reverse the course of humankind.

In a 2014 essay, they concluded that the odds of preventing collapse are now less than one percent.  Every civilization collapses, and not one has ever been anything close to sustainable.  Instead of rescuing civilization, wouldn’t a wiser goal be to quit destroying the ecosystem?  The early civilizations destroyed themselves by overexploiting renewable resources, like water, forests, and topsoil.  The newer ones are also extracting nonrenewable resources at an exponential rate.  We’re beating the stuffing out of the planet.

Sadly, the super-loony consumer lifestyle has been successfully marketed as being extremely cool.  Everyone in China, India, Africa, and everywhere else is eager to live as wastefully as possible, like Americans, but finite resources make this impossible.  Instead, Americans need to learn how to live like the people who pick their coffee beans, and we will, sooner or later.

Civilization appears to be speeding toward decades of collapses, yet most of us have little understanding of how we created our mob of predicaments.  Methinks it would be ideal to understand our boo-boos before the lights go out.  It would be great to quit repeating them.  Long ago, the introduction of plows increased carrying capacity.  Today, their continued use is reducing carrying capacity.  It’s important to understand this.

Here’s an essential sentence:  “The complacency with which our education system at all levels accepts the production of citizens hopelessly unequipped to understand the population explosion and many other aspects of the modern world is a national disgrace.”

Ehrlich, Paul R. and Ehrlich, Anne H., The Population Explosion, Simon and Schuster, New York, 1990.

In 2012, the Ehrlichs published a detailed essay, Can a Collapse of Global Civilization be Avoided? 

Other reviews of Ehrlich books:  The Population Bomb, The Dominant Animal.