by Denis Hayes
President, the Bullitt Foundation
A Talk to the Seattle Lighting Design Lab Open House
December 8, 1993
We are all familar with the bromide that American's, with 5 percent of the
world's population, consume about 30 percent of the world's resources. We
ignoe the corollary: If everyone consumed at the American level, our oil
reserves would shrink to just a few years' supply; global warming would
accelerate to the point where even Dixie Lee Ray might be concerned; the
world's old growth rainforests would disappear swiftly.
The world's biological systems are already reaching their limits. Food
and fiber production everywhere has leveled out over the last five years.
The best land is all in production, as is much marginal land that cannot
be sustained. The world's deserts are spreading at the rate of 70 square
miles a day -- in Africa, Asia, Australia, and North America. Recent
years have shown no significant gains from additional fertilizer. All the
world's major fisheries have plateaued, and several have collapsed. We
are permanently losing 80 square miles of rainforest every day.
Today, Homo Sapins consumes, directly and indirectly, about 40
percent of the net biological productivity of the planet -- 40 percent of
the sunlight that is fixed by photosynthesis and that, through oxidative
phosorolation, provides all the energy that sustains life on earth. As we
take 40 percent, we are squeezing out other species at a rate that
Professor Edward Wilson of Harvard now estimates at 100 species per day.
Four species are going extinct every hour. If Wilson is even close to
being right, this is the most calamitous period of biological collapse
since the disappearance of dinosaurs.
I am not saying that it is inconceivable that the current world
population could lead lives of comfort, dignity, and productivity. One
can envision an attractive world in which the recycling of basic metals
approaches 100 percent; in which all energy is derived from renewable
sources powered by the sun; in which healthy, low-meat diets are within
the biological carrying capacity of the planet; in which
information-dense, super-efficient, pollution-free technologies guide
commerce, transportation, and residential living.
What I am saying, however, is that such prosperity cannot be
reached following the current American model. We need to adopt, and then
propagate, a new definition of prosperity.
Equity
The problem of global equity is not just that the greedy self-indulgence
beamed worldwide on American television series, like Dallas, cannot
be widly replicated. The problem is not merely the self-parody of
conspicuous consumption larded onto The Lifestyles of the Rich and
Famous. The problem is that the average American lifestyle is not
remotely a sustainable model for global development. If embraced by 5.5
billion people, it would vastly exceed the ability of the planet to pump
oil, refinemetals, produce plastic, dispose of waste, absorb pollution,
raise meat, and grow trees.
We all have some sense of the enormous disparity between rich and poor,
but it is an abstraction. Let me try to make it a bit more personal.
Whenever you fly on a jumbo jet, you and your fellow passengers are using
about as much oil as the nation of Sierra Leone. Sierra Leone uses
three times as much energy as Chad or Burundi.
The poorest of the world's population do not earn enough in a year --
total -- to purchase a single pair of Nike running shoes.
The average American 12-year-old receives an allowance that is higher than
the per capita income of the poorest 500 million people. (Remember, 500
million people is twice as many as the total population of the United
States.
The world's poor are not lazy people, or stupid people. They are
desperately poor people. And as we hypothesize about a sustainable
planet, with unlimited potential for intellectual growth but severe
constraints on physical growth, simple ethics require us to reconsider the
distribution of physical wealth. The promise of growth has always
provided a moral escape valve, and that promise is increasingly
chimerical.
Population
All my remarks so far have assumed that world population will stop growing
this afternoon. However, the structure of the global population -- the
sheer numbers of women now entering their prime reproductive years --
virtua;;y guarantees one more doubling of the human population, even if we
slammed on the brakes today. Moreover, no one knows how to slam on the
brakes.
Because we are biological organisms, we might gain useful insights by
observing the natural history of our fellow creatures. In most cases,
when biology controls -- food limits, disease, predators -- are removed
from a population of deer (see Raindeer of St. Mathew
Island) or for that matter
bacteria, there follows a huge population explosion. Eventually, the
population exceeds the carrying capacity of the environment, and there is
a catastrophic collapse. This is the standard ecological model of a
system out of homeostasis. It happens time after time to all different
species.
The most important question in the world is whether human beings are
wise enough to see what's coming and avoid this pattern.
There is not much reason for robust optimism.
Two-thirds of all the human beings 65 and older who have ever inhabited
the earth are alive today.
The human population will grow by about 92 million people this year. 92 million equals more than the population of England, Sweden, Norway, Denmark, Greece, and Switzerland -- combined. The human population is growing about 10,000 people an hour.
During the past several years in Somalia, our television cameras have
captured unending scenes of starvation and misery; of children with bony
limbs and distended stomachs suffering from kwashiorkor syndrome; of
mothers and infants, frail arms draped protectively around each other,
slowly starving to death. An estimated 300,000 people have starved to
death in Somalia over the last few years. Here in America, in a society
that stares with gaping horror at a half dozen victims of a subway killer,
that spends hundreds of thousands of dollars to save the life of a single
premature baby, the idea of 300,000 deaths by starvation defies our
capacity to sensitively absorb the information. The tragedy is simply too
enormous.
Yet -- globally -- population growth will restore 300,000 people in about
29 hours. The deaths of 300,000 people by starvation does not even cause
a squiggle in world population charts. Even Somalia itself, it is barely
a squiggle. The United Nations forcasts that the Somali population will
grow from 7.6 million to 18.9 million in the next 30 years.
Even if we got the whole world to pay attention to birth rates, it is not
clear it would make any difference. People don't have birth rates. Have
you ever had a birth rate? People have babies. Many of us have now
learned that high birth rates are bad, but virtually everyone thinks more
babies are good. Quickly, around the whole world, we have to close the
loop. Hopefully, next year's (1994) UN Population Summit in Cairo will
provide some moratorium.
Energy
If there is ever to be a Golden Age, clearly "energy" will be central to
its success.
The world today uses accountable "industrial" fuel at a rate of about 11.7
Terawatts (TW). (One Terawatt-Year equals about 1 billion tons of High
Quality Coal. Each year we use the energy equivalent of about 12 billion
tons of coal.).
Notice the phrase I used: "accountable industrial fuel." This consciously
excludes much energy that is vital to life and civilization, but that
never enters anyone's ledger books. If you dry your laundry on a clothes
line you use no accountable fuel. If you walk or ride a bicycle to work
you use no accountable fuel. The hydrological cycle which purifies our
water and grows our crops is not counted. The sunlight that drives all
photosynthesis is not counted.
If the sun didn't shine, your buildings would be a few hundred degrees
below zero when you turned on the furnace.
But the flows of energy from the sun are so huge that they dwarf all
anthropogenic sources. Moreover, they are so dependable that we take them
for granted. The amount of sunlight is not at issue; the only real
question is how well we will harness them. For the time being, we will
ignore natural flows of energy.
This 11.7 Terawatts breaks down as follows:
Oil | 4.5 Terawatts |
Coal | 3.2 |
Natural Gas | 2.5 |
Hydro | 0.8 -- This is expressed as its thermal equivalent. |
Nuclear | 0.7 -- This is expressed in thermal equivalents as well. |
If we add in biological sources, mostly fuel wood and dung in the Third World, the total climbs to 13.1 Terawatts:
That's how much energy we use. How much energy do we need? Or rather,
how much energy will we need a half-century from now, when we have
completly turned over our housing stock, re-built our transportation
system around something other than gasoline, entered the "information
age," and stabilized the world's population? (I assume we achive all
these ends; if we don't, the results become unbearably bleak.)
We cannot really imagine 2050, anymore than someone in 1930 could have
imagined 1990. However, it is useful to begin with a survey of per capita
energy usetoday:
USA | 11.5 Kilowatts (All energy for all uses by all sectors of the economy, divided by all people.) |
West Germany | 6 |
Japan | 5 |
Third World | 1 |
How much will we need?
Let's assume -- this is optimistic, butit does not require us to live in
thermos bottles -- that the answer for the year 2050 is 3
kilowatts/person. Employing super-efficient technologies that have
not yet even been dreamed of, powering businesses as foreign to us as
Microsoft or Genetech would have seemedin 1930, the average
personthroughout the world 60 years from now will be happy using about 25
percent as much energy as the average person uses wastefully in the United
States today.
While all this takes place, when is likely to happen to the human
population? We willassume optimistically that human population will
double one more time, and then level out at 10 billion people. In that
event, total demand for accountable fuels in 2050 will be about 30
terawatts.
kW/person | Total Terawatts | ||
Today | 1.2 billion | 7.5 | 9.0 Industrial |
4.2 billion | 1.0 | 4.2Developing | |
5.4 billion | 13.2 | ||
2050 | 10 billion | 3.0 | 30 |
In this scenario, which some would characterize as radical optimism on all
counts, we would need 30 Terawatts, world-wide, by the year 2050. Where
will we get it?
Oil: | Minor contributor by 2050. |
Convential Gas: | Minor contributor |
Unconventional Gas: | Who knows? |
Coal | We have enough coal but we shouldn't burn it. This levelof demand would require the combustion of 30 billion metric tons of coal a year, increasing atmospheric CO2 over today's base by about 3 percent per year -- enough to alarm even Dixie Lee Ray. (I said I was being radically optimistic.) |
Nuclear | There is no where near enough U-235 to meet such a demand, so it would require a breeder strategy. Beyond the safety problems with breeders, they produce fissionable isotpes than can be easily separated by chemical means. This much nuclear energy would require enough plutonium to produce several million nuclear bombs per year. |
Hydropower | Hydropower now yeilds the thermal equivalent of 0.8 terawatts. Harnessing all the hydro potentialin the world, ignoring shistosomiasis, sedimentation, anadromous fish and simple economics, the total potential is about 13 TW. A reasonable number is almost certainly closer to one TW. |
Wind | There is lots of energy in the wind -- 1,000 to 2,000 TW. After all, it transports the entire hydrological cycle. But harnessable wind at good locations is probably more like 1 to 2 TW -- the same order of magnitude as hydropower. |
Fusion | You tell me. The first generation deuterium-tritium reactors have many of the same problems as conventional light water reactors, and are likely to run into the same opposition. It is hard to imagine a scenario under which advanced nuclear fusion cycles would contribute significantly to a 30 TW world energy demand by 2050. |
Sunlight | We chose to ignore the sun earlier. However, in 2050 commercial solar energy will almost certainly be our brightest energy source. We receive 88,000 TW at the Earth's surface, of which 26,000 falls on land. If we convert insolation striking 1/2 of one percent of land area at 20 percent efficiency, we can harness 26 TW -- about enough to meet our optimistic projections. (Those projections already assume, but don't "count" as a source, enormous investments in passive building design, daylighting, etc. Here I'm talking about 26 TW as "accountable industrial fuels" like electricity and hydrogen -- things that can be measured and sold.) If we harness the sunlight striking one percent of all land -- ambitious, but not crazy -- it will yield 50 TW. |
This is not Dunkink without the boats. But it is Dunkirk with no
surplus boats at all.
America led the world into the petroleum era.
America led the world into the nuclear cul dr sac.
America should lead the world out again, into an efficient, renewable
era.
Prospects Today, I sence the beginnings of what could be a profound cultural
change. For decades, the fundamental drive and the principal
accomplishment of the industrial world has been material abundance. The
goal is shared from the far left to the far right. When asked, 50 years
ago, what unions want, Samuel Gompers simply answered, "More!" But
more, like tomorrow never comes. As we get more, we want still
more, and we measure ourselves against our peers on the basis of how much
we've got.
Somehow, it has not proven satisfying. Study after study has shown that,
once a population has escaped utter poverty, the correlation between
affluence and happiness is almost random. Other things are more
important.
With each passing year, we have seen a more profound unease, a deeper
disquiet in the soul of our nation. In its most stark form, when our
prison population doubles in a single decade without making a dent in
crime; when more African Americans are murdered by other African Americans
every year than have been lynched in the nation's history; there is
something fundamentally wrong.
Collectively, as we work to achive an American peristroika,we must be
guided by a vision of what we hope to build -- a vision of prosperity and
sustainability that must be more lofty than unconstrained economic
growth.
The recent explosion of interest in sustainable development acknowledges
that all investments are not created equal. Some bestow their fruit only
on the privileged; others advance social justice. Some are centralized and
require authoritarian means of control; others promote decentralization
and resilience. Some investments anchor us to the past; others embrace
the future.
All investments will increase the GNP, but that by itself is not enough.
For a political leader to maximize GNP as his vision for the country is
like Beethoven trying to maximize the number of notes in a symphony.
Quality -- not just quantity -- is what makes a symphony,or a nation,
something special.
If our species hasafuture, it will mean that we have enough wisdom
"hard-wired" in our collective consciousness to recognize this simple
truth. It means that we will redefine prosperity in a way that brings
meaning to our own lives, and that constitutes a realistic model that
others can follow.
No place on earth is more suited - by culture, politics, resources, and
infrastructure -- to pioneer this change than the Pacific Northwest. If
not us --the people in this room -- who?
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