Showing posts with label warming. Show all posts
Showing posts with label warming. Show all posts

Monday, June 7, 2021

Unsettled


Steven Koonin’s Unsettled is an unsettling book.  I learned about it via a Facebook post, clicked my way over to Goodreads, and listened to the reader comment jungle drums.  Folks seemed to like it.  A few climate deniers wrote that the book had convinced them that the climate was actually warming.  Wow!  What could a book say that might communicate with them?  I promptly downloaded a copy of the Kindle version.

Koonin is a physicist who has worked for BP, Obama’s Department of Energy, and in academia.  He enjoys an unblemished reputation as a contrarian.  For him, climate change is “a possible future problem.”  The mainstream mindset constantly tells us that the science on climate change is settled (huge threat!).  Koonin insists that “The Science” is unsettled — reputable climate science has been highjacked by doom mongerers (but he does acknowledge that the climate is indeed warming).  The Trump administration once wanted to use him in a proposed media campaign to challenge mainstream perceptions about climate change. 

Koonin is an expert at computer modelling, and he’s very interested in climate science.  Models are given a set of rules, and then selected data is fed into them for processing.  If significant trends appear, they can provide a basis for projections of the future.  Armed with compelling graphs, and a blizzard of statistics, he shines a spotlight on little known truths.  For example, “The net economic impact of human-induced climate change will be minimal through at least the end of this century.”

Actual reality is more complex than a collection of data points.  In the Arctic, bright white surfaces, like snow and ice, are very reflective (high albedo).  Earth is bathed with incoming solar heat every day, but albedo bounces about 30 percent of the heat back into outer space, so we don’t bake.  Darker surfaces, like forests or open water, reflect much less heat (low albedo).  The 70 percent of solar heat that reaches the planet surface helps to keep the climate at temperatures that enable life as we know it.  This is an amazing balancing act.

Because the climate is warming, especially in the Arctic, the glaciers, ice pack, and sea ice are busy melting and retreating — exposing darker surfaces, like dry ground and seawater.  So, less heat is bounced away, and more is absorbed, leading to rising temps.  The warmer it gets, the faster the melting, which raises the warming, which speeds the melting — a vicious circle.

The atmosphere also plays a starring role in the balancing act.  Greenhouse gases include carbon dioxide (CO2) methane (CH4), nitrous oxide (N2O), and water vapor (H2O).  In the atmosphere, they provide a comfortable insulating blanket that retains much of the heat radiating upward from the Earth’s surface.  This process beneficially contributed to the balancing act until the industrial era, when greenhouse gas emissions intensified, and heat retention began increasing.

Warming affected permafrost.  Consider the area of the 48 U.S. states that lie between Canada and Mexico.  In the Northern Hemisphere, permafrost underlies an area almost 2.5 times as large as the 48 states.  In the Arctic, vast deposits of it, which can be many thousands of years old, exist beneath both dry ground and offshore waters.  Permafrost is a mix of frozen soil and organic material (plant and animal).  When it warms, it thaws (not melts). 

With thawing, land that was once strong and solid becomes more pudding-like.  Towns decompose, villages slide into the sea, pipelines fall apart, and hills release landslides (exposing mammoth bones).  Microbes feast on the defrosted organic matter, and then emit methane.  Methane is an extremely potent greenhouse gas.  In the atmosphere, it survives for 7 to 10 years before breaking down into CO2, which is less potent, but can remain airborne for many centuries.

On the bottom of northern seas, permafrost lies beneath layers of sediment.  Sediments contain frozen crystals of methane hydrates (or clathrates), which look like ice, but can burn.  Seabed hydrate deposits in the Arctic are estimated to contain 13 times the amount of carbon that’s currently present in the atmosphere.  As rising temps melt the bright surface of sea ice, darker seawater becomes exposed to daylight, and absorbs heat.  When seabed waters warm, the crystals melt, and methane gas is released.  In deeper waters, the plumes of methane bubbles dissolve while rising.  In shallow waters, methane bubbles make it to the surface, and enter the atmosphere. 

As the Arctic climate continues warming, it’s possible that a catastrophic release of methane could be triggered.  Folks who pay attention to this stuff are nervous.  They are monitoring the East Siberian Arctic Shelf — 810,000 square miles (2.1 million km2) of shallow waters in methane country.  The shelf covers an area more than five times larger than California.

So, why don’t we just slow down greenhouse gas emissions?  Here, we collide head-on with a monumental bummer.  Koonin wrote (2020) that in the atmosphere, CO2 levels are 415 parts per million (ppm).  Each year, about 37 billion tons of CO2 are emitted.  At this rate, the concentration in the atmosphere would increase by about 2 ppm in a year.  Year after year, more is added.  These emissions remain in the atmosphere for centuries (!) — so their concentration continuously grows.  He calculated the trajectory of current greenhouse gas emissions, and concluded that they would double by 2075.

In his book, The Great Acceleration, environmental historian J. R. McNeill said it differently, “Some proportion, perhaps as much as a quarter, of the roughly 300 billion tons of carbon released to the atmosphere between 1945 and 2015 will remain aloft for a few hundred thousand years.”  By 2008, concentrations had grown by 25 percent in just 50 years.  Of the emissions caused by humans, about 85 percent was related to fossil fuels.

Koonin contemplated where the path of continuous accumulation would lead.  He reflected on humankind’s massive addiction to fossil fuels.  Would we ever willingly back away from our high impact way of life, as long as it’s still possible?  No!  We’ll bet heavily on hope, and patiently wait for technological miracles, until the lights go out.  Suddenly, a divine revelation arrived.  The notion that we could stabilize current CO2 emissions in the coming decades was simply not plausible — and forget actually reducing them.

“Modest reductions in emissions will only delay, but not prevent, the rise in concentration.”  If greenhouse gases continue their out of control accumulation, less heat will escape, the climate keeps warming, the Arctic keeps melting, albedo keeps decreasing, and the climate keeps getting warmer and warmer.  We’ve started something we can’t stop.  Yikes!  Never fear!  Koonin pulls three “solutions” out of his magic hat. 

Solar Radiation Management (SRM) would artificially increase albedo by frequently dispersing tons reflective substances high in the sky, year after year, forever.  The Artic would quit melting, and humankind could live happily ever after.

Carbon Dioxide Removal (CDR) uses technology to extract the surplus CO2 from the atmosphere, and put it somewhere secure, where it will cause no mischief for a million years.  A few small pilot projects are underway, and they have serious limitations so far. 

Geoengineering is a word used to describe processes like SRM and CDR.  If one or both turn out to be miraculously successful, humans could, in their wildest dreams, continue burning fossil energy, and living like there’s no tomorrow.  In reality, neither is a proven success, nor cheap, easy, or sustainable.  Both ideas make lots of people nervous, for a wide variety of intelligent reasons.  Unintended consequences are guaranteed.

Luckily, there is one tried and true, all-purpose solution that humans have relied on for countless thousands of years — adaptation.  Courage!  Migrate to a region where you won’t starve, turn to ice, roast alive, or drown in rising seas.  Learn how to walk.  Become a great forager.  And so on. 

Doom mongerers warn that human influences will eventually push the climate beyond a tipping point, at which time catastrophe will ring our doorbell.  Koonin writes that it’s unlikely that human influences will push the climate over a tipping point.  “The most likely societal response will be to adapt to a changing climate, and that adaptation will very likely be effective.”  If adaptation isn’t enough, we can always throw all caution to the wind, and fool around with geoengineering. 

So, Koonin introduced readers to the notion of albedo, rising temperatures, melting Arctic, less albedo.  Great!  He came extremely close to the powerful punch line, but then suddenly swerved off into a head spinning whiteout blizzard of statistics and graphs.  His viewpoint is based on data collections — statistics on temperatures, precipitation, storms, etc. — stuff that computers can process (36 red dots, 55 blue dots…). 

A great benefit of Kindle books is that they are searchable.  I searched the book for a number of essential climate science keywords, and discovered zero hits for: Peter Wadhams (Arctic researcher), permafrost, methane hydrate, methane clathrate, methane craters, ocean acidification, ocean deoxygenation, East Siberian Arctic Shelf, pine beetles, tree death, threshold temperatures (too hot for agriculture), etc.  A whole bunch of essential information is absent in the book, and it may be an invisible elephant in the room.  Could doom mongerers actually be reality mongerers?

Reading this book was an interesting experience for me.  It made me question my views (all survived).  I learned a few new things.  Koonin is a purebred scientist, absolutely dedicated to the holy quest for truth.  The long and winding upward path to sacred certainty passes through numerous challenges and arguments that eventually weed out the dodgy ideas.  The Steven Koonin article in Wikipedia [HERE] provides ringside seats to the debate — links to commentaries by some of his critics who also have respectable credentials.

Koonin, Steven E., Unsettled, BenBella Books, Inc., Dallas, Texas, 2021.

 

Tuesday, April 20, 2021

A Farewell to Ice

 

In 1968, the Apollo-8 mission orbited the moon, and took the first photo of the Earth rising above the moon’s horizon.  In that photo, Earth was white on both the top and bottom.  Today, when it’s summer in the northern hemisphere, the distant view shows a white bottom and a blue top.  An ancient ice sheet is becoming an ocean.  With a sloppy stampede of well-intended, self-defeating, highly-destructive booboos, human cleverness has changed the planet.

In 1970, Peter Wadhams began studying cool stuff in polar regions — sea ice, glaciers, ice sheets, snow, and permafrost.  When he began his 47 years of research, polar ice was not a headline making subject that begged for the full attention of the world.  He is now among the world’s top experts in the field.  His book, A Farewell to Ice, sums up what he has learned over the years.  It provides an understandable, uncomfortable, and important introduction to the Climate Crisis. 

Arctic ice is precious, because it nurtures the existence of a climate that enables complex biodiversity.  But things are changing now.  When incoming sunbeams hit white regions, some of the heat is reflected away from the planet, back into outer space.  This ability to reflect is called albedo.  Fresh snow, which is very white, reflects 80 to 90 percent of incoming heat.  So, it has an albedo of 0.8 to 0.9.  Ice that has been bare for a while accumulates soot and dust, which makes it darker, less reflective.  It has an albedo of 0.4 to 0.7.  Sea water and dry land are darker, and absorb more incoming heat.  Open water has an albedo of 0.1. 

When albedo reflectivity weakens, more heat can enter the atmosphere, and accumulate.  Ice gets thinner, breaks up, and retreats.  So, more sunlight hits more open water, which absorbs more heat.  More ice that used to exist year-round now melts away during the warmer months.  The duration of ice-free summer periods is lengthening.  This vicious circle is called the “Arctic Death Spiral.” 

Glaciers, ice sheets, and sea ice have existed for thousands of years, leftovers from previous ice ages.  Once they are gone, they will not return for a very long time, if ever.  They were still in pretty good shape at the dawn of the Industrial Revolution.  If human population and lifestyles had remained at pre-industrial levels, the Arctic might still be an awesomely cool and stable region.

The atmosphere is precious.  It helps to retain adequate heat, but not too much, like a greenhouse.  While it allows some heat to escape into outer space, it allows even more solar heat to enter.  If Earth had no atmosphere, it would be a lifeless frozen planet.  The moon is a frigid place because it has no atmosphere, and its average temperature is -4°F (-18°C).  Earth’s lovely atmosphere enables an average temperature of 59°F (15°C). 

This atmospheric greenhouse enables our survival, because life is possible when it’s warm enough for water to exist in liquid form.  Every living cell contains water.  The greenhouse also prevents most seawater from freezing.  Unfrozen oceans absorb incoming solar heat and retain it, which is good and normal, up to a point.  Right now, ocean absorption is what’s (temporarily) saving our asses.  Eventually, the oceans will get too warm, which will impact marine ecosystems, and everything else.  Eventually, the climate will get more unstable.  Agricultural systems will get dizzy and wobbly.  Life will become more exciting.

There are several greenhouse gases that help the atmosphere trap heat, including ozone, water vapor, nitrous oxide, carbon dioxide, and methane.  Wadhams is especially concerned about carbon dioxide (CO2) and methane (CH4), because of their primary role in encouraging warmer temperatures.  CO2 is responsible for about 55 percent of the greenhouse warming issues.

Some CO2 emissions can remain in the atmosphere for thousands of years.  A lot of it is absorbed by plant life and oceans.  Prior to the Industrial Revolution, CO2 levels in the air were 280 ppm (parts per million).  Today, they are 421 ppm.  Current trends suggest that in 75 to 100 years, levels will double (800+ ppm).  In oceans, CO2 dissolves and forms carbonic acid, which damages the shells of sea critters, and hammers coral reefs.  Wizards have calculated that oceans now absorb over one million tons of manmade CO2 every hour!  [LINK]  What could possibly go wrong?

CO2 is precious.  If there was no CO2, there would be no plants or animals.  During photosynthesis, all plants take in CO2 and emit oxygen, which all animals need.  We’re now learning that it’s possible to have too much of a good thing.  Wadhams shouts (in bold text), “adding carbon dioxide to the atmosphere inevitably causes a temperature rise.  And, the more you add, the greater the temperature rise.”

It won’t be long before the North Pole will be ice-free for the first time in tens of thousands of years.  In the ’70s, summertime Arctic sea ice covered over 3 million square miles (7.8 million km2), an area larger than the continent of Australia.  In 2012, it covered just 1.3 million square miles (much more open water).  Climate change is happening most rapidly in the Arctic.  Their summers are now having some horror show heat waves.  The Southern Hemisphere has been less vulnerable to ice age periods, because it has less dry land, and much more heat-retaining ocean area.

So, as Arctic snow and ice retreats, albedo declines, more sunbeams arrive, temperatures rise, melting increases, and on and on…  This is called a feedback loop.  Our emissions have created growing imbalances that now enable self-perpetuating feedback loops.  “We are fast approaching the stage when climate change will be playing the tune for us while we stand by and watch helplessly, with our reductions in CO2 emissions having no effect.”  This is what is known as runaway warming.

Concentrations of methane are also rising in the atmosphere.  They have risen from 700 ppb (parts per billion) in preindustrial times, up to 1,940 ppb recently.  Methane is a much more powerful greenhouse gas, but it only stays in the atmosphere for 7 to 10 years, during which time it is 100+ times more harmful than CO2.  Then, it breaks down into CO2.  When methane’s brief existence is calculated within a hundred year timeframe, its impact is 23 times worse than the hundred year impact of CO2. 

In addition to airborne methane, massive amounts of it are stored in seabed permafrost, in the form of methane hydrates — flammable frozen crystals of methane and water.  When the permafrost thaws, the hydrate crystals dissolve, and the methane is released.  Permafrost is soil that has been frozen for years, often thousands of years.  Deposits can be hundreds of yards (or meters) deep.  With regard to warming and methane, Wadhams highlights two daunting issues.  One is offshore permafrost (underwater), and the other is terrestrial permafrost (under dry land).

Offshore permafrost is a dire concern for Wadhams, because it has the potential to be the source of a monstrous release of methane within a few decades.  This permafrost formed on dry land thousands of years ago, when sea levels were much lower.  Today, it is buried beneath seabed sediments.  It contains substantial amounts of methane hydrates, and it is especially vulnerable to thawing as sea ice retreats, and water temperatures rise. 

The East Siberian Sea includes 810,000 square miles (2.1 million km2) of shallow water, most of which is less than 130 feet (40 m) deep.  In the good old days, the sea used to be covered year round with surface ice, which kept the water frigid.  This changed in 2005, when summer sea ice began disappearing, which exposed seawater to the atmosphere for the first time.  Sunlight could now penetrate directly into the water and warm it.  Shallow waters warmed faster than deeper areas.

For the first time in tens of thousands of years, warm water could reach the seabed, causing frozen sediments to thaw.  Then, as the underlying permafrost thaws, large plumes of methane bubbles are released.  In deeper waters, the rising methane oxidizes, and the plume disappears before reaching the surface.  In the shallows, methane makes it to the surface, and is released into the atmosphere.

In the entire Arctic Ocean, the methane hydrate deposits are estimated to contain 13 times the amount of carbon currently present in the atmosphere.  Wadhams believes that “the risk of an Arctic seabed methane pulse is one of the greatest immediate risks facing the human race.”  Russian scientists on site calculate that the probability of this is at least 50 percent.  Scientists skeptical about the possible methane pulse have one thing in common — none have participated in research on the East Siberian Sea.  In a 2020 article, Wadhams revealed that the East Siberian Arctic Shelf was home to high concentrations of methane hydrates in permafrost layers that are up to 1.25 miles (2 km) thick. [LINK] 

Terrestrial permafrost is buried under dry land across the Arctic.  It is found within a region of 7.3 million square miles (19 million km2) — something like the combined land area of Russia and Argentina.  As Arctic temperatures soar, the permafrost is rapidly thawing.  Soils in this permafrost contain lots of organic carbon, plant material that lived long ago, but froze before fully decomposing.  Unlike offshore permafrost, terrestrial permafrost does not contain methane while frozen.  But when it thaws and decays, chemical processes then create CO2, methane, and nitrous oxide.  

Wadhams strongly suspects that a massive seabed methane pulse may occur in the next decade or so.  One way or another, fast or slow, the permafrost will inevitably thaw.  Nobody questions that the climate is warming.  The amount of carbon stored in the offshore permafrost is estimated to be 50 gigatons, but the terrestrial permafrost is estimated to hold 1,400 to 1,700 gigatons (30 times more than offshore).  Wadhams believes that most of the massive greenhouse emissions are likely to take place by the end of the century, at the latest.

So, that’s a bit about what this book is about.  When you sit down with a copy from your friendly local library, you’ll learn much more.  Wadhams is profoundly concerned about the path we’re on, and is distinctly gloomy about where we’re headed.  He admits that the technological miracles that will successfully end the Arctic Death Spiral have yet to be invented, and may never be. 

Humankind remains largely clueless, whilst insanely committed to preserving our maximum waste lifestyle, as long as possible, by any means necessary.  Only dangerous heretics talk about sensibly turning stuff OFF.  We are wading neck deep in happy talk, misinformation, gibberish, and magical thinking.  The jungle drums keep talking about “solving the Climate Crisis.”  The spotlights are aimed at solar panels, electric cars, and LED light bulbs, not melting permafrost.  What could possibly go wrong?

Wadhams, Peter, A Farewell to Ice, Oxford University Press, New York, 2017.


Wednesday, December 23, 2015

In the Shadow of the Sabertooth


Doug Peacock, the grizzly bear expert, lives near the Yellowstone River in Montana.  In 1968, the largest collection of Clovis artifacts was found not far from his home, on the Anzick ranch.  The Clovis culture of Native Americans existed for about 300 years, from 13,100 to 12,800 to years ago — during the era of megafauna extinctions.  Of the 35 genera of large mammals that went extinct in America, half of them vanished in a 500-year period, from 13,200 to 12,700 years ago.

The Clovis culture developed a new and improved design for the flaked stone points used as spearheads.  The long broad sharp points made it much easier to kill large animals, like mammoths and mastodons.  Amazingly, this new technology spread to every corner of North America within just 200 years.  Clovis points are sometimes found close to the remains of extinct animals.  Clovis technology appeared suddenly, and vanished suddenly.

Today, the waters of the Bering Strait separate Siberia from Alaska.  During ice ages, sea levels dropped, and the strait became dry land, called Beringia.  Around 20,000 years ago, the last era of glaciation peaked.  The glaciers made it impossible to travel from Beringia to warmer regions in the south.  Few, if any, humans migrated into America prior to 15,000 years ago.

About 14,700 years ago, the climate changed when the Bøling-Allerød warming period began.  At that time, sea levels were 450 feet (137 m) lower than today.  During the warm period, thawing opened up a corridor to the south, vegetation recovered, and by 13,100 years ago, it became possible to migrate from Beringia to Alberta and northern Montana.

The human immigrants from Siberia did not live at the top of the food chain.  They often had lunch dates with hungry sabertooth cats, lions, dire wolves, American cheetahs, grizzlies, and short-faced bears.  Short-faced bears weighed a ton, and when they stood on their hind legs, were 15 feet tall (4.5 m).  Maybe Clovis points were invented to reduce losses to predators.  Better weapons also made it easier to hunt large animals.

After 1492, the early European explorers were astounded by the incredible abundance of wildlife in the Americas, compared to the battered ecosystems back home.  But what they saw in America was actually a biosphere that was missing many important pieces.  The zenith of American wildlife was prior to 13,000 years ago.

So, the Clovis period began, existed for 300 years, and vanished.  It ended when the frigid Younger Dryas period began, 12,800 years ago.  The Younger Dryas lasted 1,300 years.  When warmer times returned, some clever people began fooling around with plant and animal domestication, which blew the lid off Pandora’s Box.  We’re still living in this warm phase, an unusually long period of climate stability.  We’re long overdue for another ice age, but industrial civilization has seriously botched the planet’s atmosphere, and we’re sliding sideways into an era of ecological helter-skelter.

There are four theories about the megafauna extinctions, and this subject is the source of decades of loud shouting and hair-pulling.  One theory asserts that a comet or asteroid strike filled the atmosphere with dust, causing a very long winter.  Where’s the crater?  There is none, because the impact hit a glacier.  Why did the short-faced bears vanish, but not the other bears?  How did moose, bison, elk, and humans manage to survive?

The disease theory notes that some viral pathogens, like influenza or cowpox, are sometimes able to transfer from one species to another.  Maybe species that migrated from Asia smuggled in some virulent viruses.  But species-to-species transfers are more likely to happen in confined conditions, like barnyards and livestock herds.  During the extinctions, a variety of browsers, grazers, and carnivores disappeared, from an entire continent, in a short stretch of time.

The climate change theory notes that when the Younger Dryas blast freezer moved in 12,800 years ago, the Clovis culture suddenly vanished.  Eventually, “nearly every animal over 220 pounds (100 kg) died off and only animals weighing less than that survived this extinction.  A notable exception was the grizzly, along with modern bison, moose, elk, caribou, musk ox, polar bear, and chunky humans.”  Why hadn’t numerous earlier ice ages caused similar mass extinctions?

Paul Martin was the father of the Pleistocene overkill theory, which asserts, that man, and man alone, was responsible for the unique wave of Late Pleistocene extinctions.  He believed that the American extinctions occurred rapidly, in a “blitzkrieg” of overhunting.  He argued that across many thousands of years, extinction events corresponded to human colonization — in Australia, the Americas, Tasmania, New Zealand, the Caribbean, and so on. 

Hunting clearly played a role, but it’s hard to believe that all of the horses and dire wolves in America were driven to extinction by hunters with spears.  Blitzkrieg seems like too strong a word.  Unlike mice and bunnies, large mammals have low rates of reproduction.  “If hunters remove just 4 or 5 percent of a population of slow-reproducing wildlife, those animals are on a road headed toward extinction.”  The megafauna extinctions could have occurred gradually, over decades and generations, too slowly to raise alarm.

Climate shifts can spur extinctions.  The hills near Peacock’s home are red, because pine beetles are killing the whitebark pines.  The beetles are thriving because warmer winters enable more to survive.  For grizzlies, pine nuts are a dietary staple.  He worries that the bears might be driven to extinction by tiny beetles that benefit from the emissions of consumer society.

Let’s zoom back to the Clovis site discovered near Peacock’s home in 1968.  He didn’t learn about the site until the mid-1990s.  Scientists had hauled away a bunch of artifacts, but didn’t return to perform a thorough excavation.  Peacock was able to encourage additional work at the site, which began in 1999.  This inspired a years-long adventure in learning, which eventually resulted in a book, In the Shadow of the Sabertooth.

The Anzick site was the richest discovery of Clovis artifacts.  Among the findings was the skeleton of a boy, about 18 months old, the only remains of a Clovis human ever found.  It is also the oldest human skeleton found in the Americas.  The results of DNA sequencing were published in 2014.  “The Montana Clovis people are direct ancestors to some 80 percent of all Native North and South Americans living today.”  This line came from Northeastern Asia.  The boy’s genes strongly resemble those of a 24,000 year old skeleton from Lake Baikal in Central Siberia.

“The one unmistakable lesson of the Late Pleistocene extinction is that human activity combined with global warming is a potential, ageless, deadly blueprint for ecological disaster.”  Today, the disaster we’re creating will be of far greater magnitude, and technology will not be able to rescue us.  It’s time to rise up and defend this planet.

For readers who have a comprehensive working knowledge of paleontology, this book might be easy to understand.  It summarizes the highlights of decades of scholarly research, and comments on the major controversies.  General readers (like me) are more likely to struggle with the non-linear presentation.  Be sure to look at the revised edition (2014), not the first edition (2013).  The first edition was printed before Peacock could review, correct, and polish the manuscript, due to a health crisis — and the text was a mess.  The Kindle version is the first edition.

Tuesday, July 7, 2015

The Future


Al Gore’s book, The Future, is fascinating and perplexing.  The world is being pummeled by enormous waves of change, and most are destructive and unsustainable.  What should we do?  To envision wise plans, it’s important to know the past, and understand how the present mess evolved.  The book presents a substantial discussion of six megatrends that are influencing the future:

EARTH INC is the global economy, dominated by a mob of ruthless multinational corporations.  It’s pushing radical changes in the way we live, work, and think.  Many leaders in the world have become its hand puppets, shamelessly selling influence in exchange for treasure and power.  Earth Inc. is the monster that’s killing the ecosystem.

GLOBAL MIND is the worldwide web that enables communication between people everywhere.  Two billion now have access to it.  It provides access to a cornucopia of fresh information — knowledge from sources outside the walls of culture and propaganda.  The Global Mind is our single hope for inspiring rapid, intelligent, revolutionary change.

BALANCE OF POWER is changing.  Following World War II, the world was happy, as America provided virtuous leadership that helped maintain stability in the world.  Today, the U.S. is no longer respected.  Power is shifting away from Western nations to new powerhouses, and from national governments to corporate interests.

OUTGROWTH is the explosion of unsustainable growth in almost everything — population, pollution, consumption, soil mining, water mining, extinctions, and on and on.  Earth Inc. is fanatically obsessed with perpetual growth, and aggressively flattens anything that stands in its path.  Bummer growth must be replaced with the benevolent growth of Sustainable Capitalism.

LIFE SCIENCE is providing us with technology to manipulate biological processes in new ways.  We’ll cure more diseases and live much longer.  Our ability to deliberately alter the genes of any living organism allows us to play a significant role in controlling the planet’s evolutionary journey.  Of course, evolution must be manipulated cautiously, to avoid embarrassing calamities.

THE EDGE is the catastrophically dysfunctional relationship between humankind and the ecosystem.  On the down side, trashing the atmosphere and climate has created a monster we cannot control.  On the plus side, it’s inspiring many enlightened efforts to guide civilization back into balance with the ecosystem.

Al Gore is a charming lad with a good sense of humor.  The son of a senator, Gore has spent much of his life amidst the barbarian tribes of Washington.  He eventually became the vice president and a wealthy tycoon.  While at Harvard, one of his professors was a pioneer in climate change research, a big juju subject, and a primary influence on Gore’s career path.  Gore is a senior advisor to Google, and a board member at Apple.  He is exceptionally well informed about the digital world, climate change, ecological challenges, global politics, and the shenanigans of the rich and powerful.

In the book, Gore sometimes jabbers like a politician giddy with optimism.  Yes, things are a big mess, and the status quo is in need of speedy, intelligent, radical reform.  We can fix it!  Politicians rarely win elections when their objective is damage control (Jimmy Carter’s mistake).  The way to win is to wear a big smile and promise hope, solutions, and better days ahead.  I sometimes wonder if damage control might accomplish more.

Much of the book is impressive, but its optimism for the future is not well supported by compelling arguments and evidence.  Readers learn that it’s not too late to nip climate change in the bud.  We simply need to reduce greenhouse emissions by 80 to 90 percent.  But how could we do this without blindsiding the system that enables the existence of seven-point-something billion people?  Easy!  Create a carbon tax.  Shift subsidies from fossil energy to renewables.  Require utilities to use more alternative energy.  Create a cap and trade system.  If every nation eagerly did this next week, our worries would be over.

Population continues to grow exponentially.  Gore recommends that we “stabilize” population.  It would be risky to actually reduce population, because this might trigger a “fertility trap,” a terrible downward spiral of population free-fall.  When there are too many seniors, and not enough taxpayers, pension systems collapse.

But stabilizing an enormous population raises serious questions about how much longer we can continue to feed so many people.  Agriculture is currently engaged in “strip-mining topsoil” on a staggering scale.  Each kilogram of Iowa corn costs 1.5 kilograms of topsoil, a precious nonrenewable resource. 

Gore asserts that this can be corrected by a transition to crop rotation, and to organic low-till technology.  But low-till cropping is designed for conventional agriculture, and works well with heavy applications of herbicide.  Organic low-till is still in the experimental phase, and is extremely difficult to do successfully, because weeds are not wimps.

While water usage is increasing, water resources are declining, because underground aquifers are being depleted in many highly productive farming regions.  Gore recommends drip irrigation, wastewater recycling, and cisterns for rainwater storage.  Considering the current scale of water mining, and the cost of high tech irrigation, it’s hard to see these options as effective solutions.  When the water is used up, farm productivity drops sharply, or completely.

Meanwhile, another monster is rising on the horizon — global phosphorus reserves are moving toward a crisis.  Because phosphorus is an essential plant nutrient, this will have huge effects on conventional agriculture.  Oh, we also need to get the nations united behind reversing deforestation, fish mining, and mass extinction.  

Gore says that it would be insane to burn the fossil energy we’ve already discovered, because this would worsen the effects of climate change.  But we’re unlikely to stop.  Experts aren’t sure when Peak Oil will arrive, but it will, and it will be followed by an era of increasing turbulence, as industrial civilization is painfully weaned.  Most of the easy oil has already gone up in smoke, and what remains is far more difficult to extract.  Expensive oil means expensive food, and many poor people can barely afford food today.  Spikes in food prices led to food riots in 2008 and 2011.

Gore adores civilization’s two magnificent achievements, democracy and capitalism, but he laments that both have been “hacked” by the evil slime balls of Earth Inc.  If we don’t fix this, we’re doomed.  It’s time to fetch our pitchforks and chase the slime balls away.  The solution to our problems is to restore dynamic democracy, and then create a utopia of Sustainable Capitalism, which will allow Sustainable Growth to continue forever!  The best is yet to come!

The book provides an impressive discussion how we got into this mess.  It’s unique in that it comes from a card-carrying member of the global elite, not a hungry dirty radical.  Readers are given a rare opportunity to enjoy the view from the top of the pyramid.  I hope that the second edition clarifies some questionable assumptions in this otherwise fascinating book.

Gore, Albert, The Future — Six Drivers of Global Change, Random House, New York, 2013.