Chapter 1. Hard Facts.
L
ike many people, my experience of the effects of our growing population was for many years limited to my observations of the changes in my immediate neighborhood. From time to time some changes certainly raised questions regarding our future way of life, the ever increasing traffic, the continuous noise from the distant highway and the ever increasing property taxes as the population grew. But I became so used to the slow but continuing change that this rate of growth eventually became an expected part of everyday life. Over the last three decades in the name of "development" I have seen our villages turn into towns, I have seen the farmland disappear as it is sold for building lots, I have seen the highways become congested, with traffic lights now on almost every junction, and the country lanes have become lined with homes. Yet because I have been part of this growth, it has appeared to be the natural sequence of change, a slow and steady movement to a better life.Then for several years I worked overseas in some of the developing countries and the things that I saw and heard completely changed my understanding of the effects of population growth. Four episodes in particular stand out in my mind.
Back home I began to consider the effects of overpopulation much more seriously. Here in Putnam County, in the state New York, almost daily I read in the papers of the tighter regulations being developed to control building on the few remaining open spaces. Morning and evening, the traffic clogs up what had been country lanes, triggering the demand to convert them to four lane highways. On a very personal note my home sits on a lake that was once clean and a popular swimming place in the summer, but is now so polluted that few of the residents will use it and many of the reptiles and animals that used to be found there have long since
disappeared.
The effects of 20 years of run off from the roads.
This is understandable, as a few decades ago the hillsides that surround it were covered with forest and farmland and most of the water entered the lake via a large swamp that effectively filtered the rainfall. Now the slopes are covered with homes and roads and during a rainstorm the water rushes down the highways and drains through several culverts directly into the lake. I also began to consider more carefully the many articles that I constantly read in the local paper as being of "environmental concern". I see reports of action groups that are trying to conserve the few remaining acres of open land in our county.
There are frequent discussions on the development of land for shopping centers and office buildings. Nowhere in any of these discussions are the effects of population growth even mentioned, in fact it is a matter of some pride that the population growth in our town is the highest in the county. Most of our particular growth is from people who are moving out of New York as incoming immigrants, legal and illegal, take over sections of the city.
The continuously increasing population of this world is rapidly depleting our limited non-renewable resources. It is also jeopardizing the longevity of some resources that we generally consider renewable. At the same time it is drowning us in pollution, which further consumes our resources as we try to limit the effects of this on the health of our environment and our people. All of this is occurring at a speed that is increasing daily as the world’s population rockets out of control.
This book does not contain pages of statistics. These are readily available to anyone who wishes to investigate the problems more deeply and in a truly scientific manner. Rather it presents the facts that have brought us to this point in the history of the world; and it considers the possible scenarios for the future. It discusses the way our end may occur and suggests our ultimate fate if nothing is done to control this ever-growing population. If we look at all the known facts honestly and without prejudice or bias, it is not difficult to understand what is happening in the world. It may well be that we have already left it too late to take effective corrective actions, but certainly if we do not begin immediately, our children’s future is bleak and our end may occur many centuries before nature would otherwise terminate life on this planet and it will occur under extremely cruel conditions. Hopefully this book will at least stir up a general concern regarding overpopulation and encourage open public debate and action.
When Homo Sapiens first evolved on this world, nature made sure that the species would thrive. The act of procreation was simple, quick and generally provided pleasure to both parties. The female could be expected, under normal conditions, to give birth to at least one offspring every year during her fruitful lifetime and nature made sure that a male would always be ready and willing to play his part. This natural stimulus was necessary during the major part of the existence of our species as initially life expectancy was short. A high percentage of children never reached adulthood and a healthy birthrate was necessary to guarantee that a sufficient number of people would survive to maintain the race.
For thousands of years this system functioned very well and there was very little change in the conditions that determined the life span of "Homo Sapiens". Then during the last millennium we began, slowly at first, to develop the ability to control our environment and this dramatically changed the entire situation. These changes are still continuing, but at an ever-increasing rate and at a lightning speed, at least compared to the time scale of nature’s evolution. Over the past few centuries they have completely altered our way of life. As a consequence we have been able to dramatically increase our life span, and there is now no reason for a high birthrate to maintain the species.
Better nourishment from the development of farming, clean water supplies, improved housing and sanitation, and above all an ever increasing knowledge of medicine and the prevention of sickness have all played a part. During the past few centuries these advances have resulted in a dramatic increase in the number of people in the world. We have now reached the point where the present rate of growth of the world’s population is no longer required to guarantee the survival of mankind. Instead, population growth has now become the single factor that is most likely to guarantee the premature demise of our civilization.
Unfortunately overpopulation and the effects it has on our way of life are extremely unpopular subjects for general discussion. They attack so many traditional lifestyles and they affect so many political and religious affiliations that they are rarely discussed openly in any public forum. Only recently I heard a talk show host on the TV discussing an incident that caused the death of a child. He then said that as our population continues to grow so quickly there was a much greater probability of this happening again. But after going into the details of population growth and a brief comment on the effect on our lives, his final comment was "But there is nothing we can do about that". There are a few less well known organizations that are dedicated to the debate but generally they are not reported in the media. They make their arguments in a quiet, scientific manner, and are never given the publicity accorded to the more active environmental groups.
In total contrast the environmental protection lobby is strong and extremely militant in its demands for the elimination of anything that could be considered as damaging to our environment. However it then seems totally unwilling or unable to accept the very obvious fact that the fundamental cause of almost all of our environmental problems is our ever-increasing population. We read of protesters living in the redwoods to prevent them from being felled or from removing timber that might harm the spotted owl. We hear of the demands to eliminate atomic energy completely or to tear down the dams to allow the rivers to flow freely. We see and hear the outcry to save the rain forest, and preserve the homeland of the gorillas. These are all excellent subjects for discussion, but they all very deliberately avoid any debate on the very simple fact that none of this would be necessary if we controlled the world’s population. Some of our very well known environmental organizations flatly refuse to discuss the situation in any form because it is felt that some of the more aggressive members would use the argument to discredit the present leaders.
I have never seen or heard any report of our environmentalists demanding that some actions be taken to retard our population growth. When I asked one activist why this fundamental cause of most of our environmental problems is not given the importance it deserves, his response was that "This is not a popular subject". Another said, "We can do nothing about it, so we don’t bother". Unfortunately pretending that the overpopulation of this world does not exist and has no effect on our future will never eliminate the very real danger that civilization faces today.
It is extremely difficult to understand why we refuse to at least discuss publicly the inevitable fate that awaits us because of overpopulation. It is incredible that we are unwilling to even consider developing the actions that are necessary to prevent it. We dance around the subject of population growth as if it does not matter, as if it will eventually correct itself or that there was nothing we can do about it and as if we had all the time in the world to correct the situation. We try to pretend that the inevitable crisis will never happen although all the evidence is clearly visible to anyone with an unbiased eye. We spend a tremendous amount of time and effort in attempting to eliminate the very obvious environmental problems and the social and political signs that clearly indicate our eventual fate. We appear to be totally unable or unwilling to take any corrective action. For example there are continuing discussions on how to prevent global warming, and avoid polluting the rivers and oceans. These are all commendable concerns, but completely ignore the ever-growing population that is the cause of all these problems.
We are like the sailors on a sinking ship, who are trying to bale out the ocean with a teacup, while ignoring the gaping hole through which the sea is pouring in.
Recently I read of the international meeting to discuss new laws to limit the emission of gases that are believed to cause "global warming" and the tremendous cost that this would incur. From time to time we see concerned groups taking up arms to prevent the loss of acres of rain forest to agriculture or mining or similar projects. Ocean fishing that for years was completely unrestricted is now subject to control because the amount of fish available is steadily decreasing. All of these actions are commendable, but no one will even discuss the overpopulation that is the fundamental cause of all of these problems.
Overpopulation and the effect that it has on our lives and our future must be brought "out of the cupboard" and debated openly by us all. Until we accept the consequences we will never take action to correct the situation. This is not something that can be delayed for years. We either begin to take action now, or we must prepare for a global disaster way beyond anything we have seen to date. This will totally smash our civilization as we know it today. Those who are left may generate a new and very different society, but that will be generations away.
Hopefully this article will raise the degree of concern regarding the ever growing world population, initiate discussion and hopefully trigger some corrective action. It will also begin to show the complexity of the situation and that this problem affects almost every aspect of our lives. Merely stabilizing the population at its present level will affect our economy, the very way that we live, and our entire future. It we intend our civilization to continue into the future we will ultimately have to reduce the world’s population to that which we can support with our replaceable resources. When we consider this step, we will see that the results shake the very foundations of many of our beliefs and ideas. The results of taking no action however will be even more disastrous.
Chapter 2. How Did We Into This Mess?
For many centuries the normal life span of most adults would today be considered quite short. A hundred or so years ago a man of 45 was considered old. Newborns had a poor chance of surviving the first few years of life with many fatal childhood sicknesses that are today considered little more than a nuisance. From time to time outbreaks of contagious diseases such as the "Black Death" and the "Plague" decimated the citizens of various countries and even influenza caused many deaths every year. Added to these catastrophes many minor accidents that today are completely curable, such as a broken bone or a bad wound, were more likely to result in death. All of these factors tended to maintain the growth of the world’s population within acceptable limits. The overall increase was small and the additional people were readily welcomed into society.
Even three hundred years ago, the population of the world used very few of the world’s non-renewable resources. Their way of life was largely rural and primarily involved only renewable materials. The farmer tilled his land using animals as the primary source of power. He kept cattle and sheep to graze the fields that were then laid fallow to regain their fertility. The manure from the cattle, horses and other animals was spread over the fields prior to plowing, to fertilize the new crops. Transport was limited on the ground to the human being and the horse, and similar animals. On water the sailing ship or rowboat carried all of the loads. Goods produced in any neighborhood were generally used within that local area, and on the whole the necessities of life did not rely on transporting goods from a central manufacturing areas.
The major source of fuel was from renewable sources such as wood and in some countries dried animal dung. Small quantities of coal was used by those able to dig it out from nearby outcropping seams. Clay was used to make bricks, fired with wood from the forests. Mud and soil was used as the primary materials for adobe dwellings and together with timber, rock and stone provided all the necessary building materials. Some nonreplaceable materials, especially tin, copper and iron were mined to make tools, utensils and farm implements, but in very small quantities compared to the gigantic mines of today. Candles, made from animal fat, provided most of the illumination until lamps were eventually developed when oil became available, initially from the whaling industry. It was only towards the beginning of the 19th century that this overall picture began to change dramatically.
The use of iron, in particular for military weapons began the industrial revolution. The use of automation increased with the invention of the cotton and wool mills that were required to satisfy the growing demands for clothing from the increasing population. Even then power was still provided from natural renewable resources such as water wheels and windmills. The invention of the steam engine triggered off the growth in the demand for non-renewable resources and soon coal fired steamships and railways completely changed our way of life. Faster and cheaper transport opened up the country and eventually changed the nature of industry. Until this time it was slow, difficult and expensive to move goods and materials over more than a very short distance. As a consequence small plants had largely carried out manufacturing to supply a very limited area. Now large factories and mines could develop in centralized areas, as it became possible to easily ship products all over the world. They in turn generated a need for workers to operate the mines, the iron works and the factories. This triggered the steady move from the country villages to the urban and city areas, which continues today.
The demands for fuel for the newly invented internal combustion engine triggered off the drilling and refining of oil to provide gasoline and together with the demand for coal began the major drain on the world’s resources. Electricity became readily available and in turn triggered off many new products, as well as a greater use of coal and oil to generate the power. These things eventually changed our entire life style. In the past, people walked to the local store each day for their food, and also grew much of their own food in their gardens and fields. Now they began to drive to the supermarket once a week for their supplies. This required a motor car to transport their food and a refrigerator in which to store it. In turn this demanded the gasoline and electricity to run them. These, and many other inventions, which were initially considered luxuries, quickly became an essential part of life. They increased the rate at which we began to use up our nonrenewable resources and in turn they increased the rate of pollution of the environment. The fumes from the refinery for the gasoline, the exhaust from the car, the gasses and the cooling water from the power station, not to mention the factories that make the materials for all of these products and employ the people who buy them.
Today each individual in the major industrial countries consumes many times more of the world’s resources than did our ancestors of a hundred years ago. This consumption is increasing faster than the number of people and so we have two interrelated factors. Not only is the world’s population increasing at an alarming rate, but the consumption of the world’s resources is increasing at an even faster rate, which in turn contributes to the increasing pollution. Consider the effect on the cost and availability of gasoline and the increase in pollution when the automobile becomes available to the masses of the peoples of China or India. We express our concern when the price of gasoline is increased by a few cents a gallon, but in a competitive society, it is only natural to expect the cost of a product that is in limited supply to steadily grow as the available supply diminishes. It is inevitable that we will continue to pay more and more for the fuel to operate our automobiles, until the world’s supply of oil is completely depleted.
Our economic system has also indirectly encouraged overpopulation. We have developed a competitive, capitalistic system that is solely based on profit. This has worked extremely well over the past two or three decades, but it has also, in the long term, only made the situation worse. A profit based system demands growth if it is to continue to operate efficiently. The investor is seeking growth in his investment, and this in turn demands that more and more people buy the services or products concerned. This very obviously cannot continue, without a growing population. For our long-term existence we will have to develop a "steady state" economic system to serve a "steady state" population. It is difficult to see how this will function. Attempts to develop alternative economic systems such as the socialist example have not proved totally successful. But when resources are limited, and the customer base is static, business cannot operate solely through competition and a free market. This may well become one of the more difficult problems to overcome when our population is stabilized.
The growth in scientific knowledge has certainly contributed both directly and indirectly to population growth. The increasing ability to cure many of the diseases that in the past caused thousands of deaths has been a very obvious factor. Smallpox, Malaria, Influenza and so on, that killed so many people every year, are now considered little more than a controllable nuisance. On the other side the increasing ability to control and limit conception has the potential of solving many of our population problems. Unfortunately in many countries birth control is socially unacceptable for a variety of reasons. Some religions will not accept the need to control our population, and among many races there is total ignorance and a lack of understanding of the seriousness of the situation.
Tradition and history materially affect this problem. For many years when individuals reached the age when they were unable to work, their very life depended on having a family around them to look after them, to provide food and lodging and the many other services necessary if they were to survive. From this requirement developed the need for large families to assure the survival into of at least a few members. In one of the third world countries a young friend I was visiting had limited his family to two children because he wanted to provide them with a sound education. He told me that his mother had called a family meeting a few weeks earlier at which she demanded "How dare you deprive me of the pleasure of having many grandchildren?" and from then on he was totally ostracized. This was a comparatively wealthy and well-educated family but the attitude is understandable as in that country there is no social security, and if the family is not there to look after the old people the only alternative is begging in the street.
We have reached this position in the history of the world because the human race developed it’s knowledge of science and technology so very much faster than nature expected, and has exceeded the ability of evolution to compensate for the subsequent increasing fertility. If nature could in some way reduce the ability of mankind to reproduce, to two children in the lifetime of every woman there would be no need to become concerned about our future. If nature cannot do this, then for the sake of the present population and those of the near future, man has to take over this task.
Nature may still have a trick or two to play on us. We have seen in the past few years the outbreak of HIV that has contributed to the deaths of millions of people We have also seen the effects of the Ebola virus and the growing concern over the West Nile virus. With the masses crowded together in many of our cities another such disease could involve many more millions of people. There is always the possibility of some major catastrophe that could dramatically change the future of mankind, be it an asteroid striking the earth, or some other major disaster, but in all honesty this is unlikely to occur.
Mankind is left with two options. We can ignore the ever-increasing population growth and hope that in some unknown manner it will eventually correct itself. We can accept the inevitable consequences if it does not, and they may well be disastrous. Or we can begin to take all possible measures now, attempt to limit the population growth and make our ultimate end controlled, dignified and as far into the future as possible.
Chapter 3. Signs of the Future?
T
he shortage of some basic raw materials and the pollution of our environment are the first practical signs of the effects of overpopulation. They are of course in many respects interrelated, and in this age are becoming highly visible. This is not a new idea. In the late 1700’s Daniel Malthus suggested that the population could outstrip the available food supply, and that there would always be a struggle between the demands of a constantly growing number of people and the food that nature made available. However in those days, when the world’s population was much smaller it was easier to ignore these facts. Now we see signs every day that the world’s population is quickly outgrowing the resources nature has provided. Man is valiantly trying to boost the efforts of nature, but inevitably there is a limit to what can be achieved. A lack of clean water may well be the first shortage that will have a major impact on our civilization. We are using more and more water while there is a growing pollution of many traditional water supplies.Fifty years ago the very idea of buying bottled water for drinking would never have been thought possible, as then most traditional water sources could be used safely. I remember as a boy playing in the fields and drinking from any of the streams and rivers in our rural community. Now New York City is considering building a massive filtration plant to purify the drinking water for their residents. Until recent years, the water from the many upstate reservoirs has been exceptionally clean and is currently piped directly to the consumers in the City with little or no pre-treatment. Indeed it has been the proud boast of New York City that their drinking water was some of the purest in the country.
However with the influx of people many of the areas surrounding the upstate reservoirs are changing dramatically. The once pristine wilderness of the entire area is quickly developing into suburbia. This dramatic growth in the population has resulted in an ever-increasing pollution of the water supply. Tighter zoning laws have been put into force that limit how and where buildings can be erected near the reservoirs, but increasing contaminants come from cars, businesses and industry, as well as domestic housing. They are all contributing to the overall pollution problem. The new filtration plant will cost many millions of dollars to erect and will increase the cost of water. In turn it will also consume a considerable amount of electricity, which will then add to the demand for more generating plants in the state. These in turn inevitably generate more pollution. So it is obvious that shortages of water and pollution levels are very closely related.
This is but one comparatively small example of the growing problems for our rivers, steams, and lakes. While great steps are being taken to control the pollution of our water supplies, more and more actions are required as more and more people produce more and more pollution. The growing population and the desire for clean water in our streams and rivers are constantly at odds with each other.
In the western states, some environmental groups are demanding that many of the dams that provide the water for hydroelectric plants are demolished to preserve the environment for the fish population. These plants not only produce much of the electricity for the western states, but also control the water that is essential for many of the major cities especially those in California. The reasons given for removing the dams not only include saving the fish populations but also to improve the flow of water in the rivers, and other environmental reasons. But power and water are two very closely interrelated items both of which are absolutely essential if our society is to continue. As the population of the western states continues to grow, it seems unlikely that we will be able to maintain the necessary supply of water. There have already been suggestions that it may be necessary to buy water from Canada, and questions as to whether it is practically possible to pipe the water all the way South to the major Californian cities.
In some of the central and southern states the water table has dropped dramatically as the supply has been tapped for irrigation of the fields. What was basically desert with occasional areas of green where the water naturally reached the surface, has now been transformed into rolling farmland and pastures. Watching the irrigation systems rolling slowly across the fields spraying water onto the crops it is easy to understand where the millions of gallons of water are being used. Unfortunately the ground water that took thousands of years to accumulate is being used very much faster than it can be replaced and inevitably the ground will once again revert to desert. It is already being forecast that this will reduce the area of land available to grow our food, at a time when the demand will be increasing because of the growing population.
The effects of population growth on the water supply are much more easily understood by observing the changes at a local level. Twenty years ago the lake on which I live was crystal clear and full of life. Although at a superficial glance nothing much appears to have changed, unfortunately much of the wild life has disappeared. Ten years ago in the summer evenings I could sit on my deck and listen to the croaking of the many frogs that lived in the lake and the surrounding swamp. Today there is not a single frog to be seen, and many of the other animals that were once common visitors to our garden have long since disappeared. The water is brownish and after a rainstorm often has a strong smell of sewage for a day or two. After the last analysis, the chemist was asked if it was OK to swim in the lake. "Only if you must", was the reply "Don’t let the water get into your nose or ears, and then have a good hot shower when you come out". Some of the residents have suffered from infections after swimming in the lake and no longer venture forth and those who do, follow the chemist’s advice and take a good hot shower when they get out.
It is easy to see where this pollution has come from. For many years all the water that drained from the surrounding hills came into the lake via a large swamp that very effectively filtered the water. Then the shores of the lake became a popular place for summer cottages which later became permanent residences each with its own septic system. The surrounding hills quickly became developed and roads built. What was pristine woodland and farms now has acres of homes, roads and paved areas all of which drain into several enormous culverts that eventually take the water directly into the lake. Our lake is only a very tiny part of the pollution problem, but multiply it by the many areas of population growth and it is easy to see how it can quickly grow to unmanageable proportions. It is of course now far too difficult and costly to install the pumped sewage and drainage system that would be required to totally eliminate this contamination of the lake. In addition the solution would consume electrical power that would in turn generate more contaminants.
Every home in the area has it’s own well and septic system, and for years the question of water supply and purity was never even considered. Now we frequently hear of neighbors having to deepen their well because the supply of water has failed. From time to time people complain of a smell from their water and testing shows the presence of bacterial contamination. The well then has to be disinfected, pumped out and deepened because the water has become contaminated to the point where it is a danger to health. This situation has steadily become worse over the past few years and will only continue to worsen as the population grows. Our school district has recently had to install chlorination systems into most of the wells that supply the schools. They have provided pure drinking water ever since the schools were built but now contamination has become so severe that it is a danger to health and bottled water is now provided for drinking.
Another of the more imminent shortages will doubtless be gasoline. This will have a very dramatic effect on all our lives. We have already been affected by the increasing cost of gasoline and although it will doubtless vary with changes in the economy, it is unlikely that it will ever return to the prices of a few years ago. It is estimated that the world resources of oil are sufficient for the next 30 to 40 years, and to date there are no effective plans to produce a substitute in sufficient quantity and at an acceptable cost. We have heard of alcohol and ethanol being produced from grain and vegetation. We have seen the odd unit designed to provide power from sunlight. We frequently hear of the potential use of fuel cells, but to date we have seen nothing that can effectively take over from the internal combustion engine and no practical substitute for gasoline. This infers that the cost of gasoline will steadily increase until it will eventually be out of the range of all but the very wealthy. Likewise even if a substitute can be developed it will inevitably be much more expensive than even the present cost of gasoline
The high cost will reduce the demand and may extend the life of the world’s oil supply for a few more years. It will also provide an opportunity for society to get used to living without the motor car. There is no major combined effort to develop an alternative mode of personal transport and it seems totally unlikely that any other form of portable power will become available. The very idea of powered personal transport may well become part of history. This will have a dramatic impact on the way we live. During the past few decades our entire way of life has centered on the automobile. Our towns and villages have been designed around the motor car, we have become used to "driving to the mall". The layout of our shopping centers has been developed to provide acres of parking. What will we do when gas costs $20 per gallon and then later when it is totally unavailable?
It seems likely that we will have to revert to a way of life that is in many ways similar to that of the villages of the 1800’s, where every necessity of life is within walking distance. The available fuel will have to be conserved for the public transport of people, food and other goods, not for private travel. This will demand a complete change in the way we consider property development and will totally alter our social and business philosophies.
As the supply of oil is diminished it will inevitably impact our supply of electricity. Much of the power generated in this country uses oil or natural gas as the fuel and therefore the cost will rise. There are still some power stations fueled by coal and it may well be that we will have to revert to this again temporarily until it too is used up in the more distant future. That is if we can develop some effective way of removing the contaminating smoke and gasses from the generating system. The only alternative at the present time is atomic power and in spite of the many objections from the environmentalists, this appears to be the only reliable long-term power source of the future. The question then becomes "How do we get rid of the spent fuel?" This may well be the environmental problem of the next century or until we can develop other generating systems using atomic fusion or replaceable resources.
Electrical power will, with clean water and oil, be among the first shortages that will affect our overall way of life, indeed we have already seen this occurring with the "rolling blackouts" in California. Our nation is terribly wasteful of electricity. One has only to look out of the window of any airplane flying over our country at night to note the abuse of electrical power. Millions of kilowatts advertise goods and services. Street lighting runs from dusk to dawn on many mostly empty streets. Totally empty playing fields are flood lit all night, and many other similar wasteful examples of the use of power are readily visible. In our homes we are equally wasteful: rooms are lit when no one is present, outside lights are run solely for appearances or as protection against marauders, many pieces of equipment use power continuously to eliminate the inconvenience of having to switch them on or off.
The "rolling blackouts" that are currently affecting California are a prime symptom of the effect of overpopulation. Their basic cause is simple to understand; there is insufficient power being generated. However during the past few years there has been considerable opposition to building more power stations. Atomic power has been shouted down because no one wants the power stations in their neighborhood, largely because of totally inaccurate publicity regarding the potential dangers from this source. Waterpower from the many dams is criticized because it "imprisons the rivers", oil and natural gas is turned down because of the possibility of adding to the pollution of the area. In other words the "Not in my backyard" syndrome is the popular attitude, but does not offer any solution to the problem. If no additional generation is contemplated then all the users, both private and business must immediately start conserving electricity and it may well be necessary to consider rationing supplies. Perhaps this power shortage is one of the most immediate signs of the effect of overpopulation and indicates what will happen in the next few years in many of our states. A reduction in the population would reduce the need for additional power generation and provide a longer time frame in which to plan for the future of mankind.
The future then has to be seen as a totally new way of living. The only readily available power will be electricity from atomic power stations, with the additional but lesser sources of hydropower; coal fired generator systems, possibly electricity from wind and perhaps some from tidal systems, geo thermal and solar devices. It is unlikely that electricity will ever be as readily available as it is today. In the near future we will have to learn to use it much more economically. We will have to make the difficult choices between maintaining environmental sanctity and providing adequate power and water. Several dams that provide power and water for both drinking and irrigation now corral the Colorado River that ran so proudly through the Grand Canyon. As a result it no longer discharges into the sea but ends up as a dismal dribble that eventually disappears into the desert. This may well be the future for many of our rivers, and raise the difficult question as to which is more important, electrical power or a free running river?
There are other signs of shortages of the world’s resources of which the general public are largely unaware. For example fish is now generally expensive, and a delicacy whereas fifty years ago it was very cheap and the food of the poor man. "Fish and chips" wrapped in a newspaper and eaten with the fingers while walking home from the movies was the favorite of many English families in the 40’s and 50’s. The Arctic was literally swarming with fish after WW2 during which time few if any trawlers ventured into that ocean. The author was at that time designing "fish finding" sonar systems and remembers one trip to the arctic on a deep sea trawler where the catch was so great that the contents of one haul of the net took almost 24 hours to process. Now the fishing at the best is poor, and some countries are banning fishing at various times in an attempt to allow the fish to re stock the seas. The fast growing population of the world has far outweighed the ability of nature and the oceans to keep up with the demand for fish.
Only recently the newspapers reported on the dramatic reduction of the lobster catch in recent years in the waters of the East Coast of the USA in the New England region. The reason given was the increase in pollution levels of the sea water in this area, from the high levels of smog, the contaminants from the sewage systems that drain into the sea and the general effects from the high level of population in the area. It is fascinating to note that of all the proposals for reducing this effect, not one suggests that we just have too many people jammed into one small area of the country. In the same paper was an article describing a recent report stating that the contamination of the environment from automobile exhaust emissions causes more deaths from breathing problems that are caused by accidents. However because they are seldom seen as being directly connected to the environment, these deaths are rarely linked to this source of pollution.
There was also a long report noting that the Midwest region was heading towards a water shortage that would affect not only the drinking water supplies, but of even more universal importance, the water required to irrigate the crops. In almost every edition of our local paper there are smaller but equally significant reports of local water problems, ranging from failing wells to pollution of the supplies in certain areas. The signs are all around us and so easy to see. It is totally incomprehensible to understand why they are not recognized as the warning that our entire society is on the brink of a major catastrophe.
In the area of non-renewable resources there are other present shortages. For political and environmental reasons the electronics industry has been asked to eliminate lead from it’s solders. While working a few years ago on the development of "lead-free" solders, it soon became evident that some alloys were impractical because there was insufficient world supplies of certain metals. This triggered off a review of the known world resources, and it was surprising just how many will be exhausted in the not too distant future. Even our renewable resources can be permanently damaged if they are not used wisely, for example the forests of England and Scotland were being quickly cut down in the Middle Ages to provide timber for the new British Fleet and the charcoal required for the smelting of iron and steel. They were completely decimated and have never recovered.
When we look more closely there are many other signs that indicate what lies in store for mankind because of overpopulation. Although some are not so clearly obvious, every day the newspapers are full of clues. New anti-pollution laws are probably the clearest indication, and show that the levels of contaminants are bound to increase as the population grows. Other signs are the travel problems that range from peak hour traffic jams in almost all our cities to an ever-growing lack of on-time service at our airports. We see the proposal to limit the number of people who can visit certain National Parks, at any one time and strict controls on the use of travel vehicles to protect the vegetation. In our towns and cities more and more construction rules are added every year to control building. On almost every page of every newspaper there are articles defining a problem that can be directly or indirectly attributed to our growing world population. While we can often find a solution to any one particular problem we know that this is only a palliative or will move the problem elsewhere. The only permanent answer is to first halt our ever growing population and then reduce it to a level that can be maintained using nothing but our renewable resources.
Chapter 4. What is Our Future?
If no previous disaster occurs, our world will inevitably be incinerated when the dying Sun explodes. All the scientific evidence currently available suggests that this will be the end of the world as we know it. Mankind will almost certainly have died out many centuries before this happens, if only from the violent weather changes that will develop as the Sun dies. However if the present rate of growth in our population is not brought under control, civilization as we know it will end very much earlier as our people struggle with nature and each other for the necessities of life.
The destruction of our planet will have very little effect on the remainder of the universe. One writer eloquently described the ultimate fate of our world in these words. "On a distant planet an astronomer may casually mention to a colleague. ‘I saw an exploding star last night’". That is all the end of this world will mean to our neighbors, if any neighbors exist. We have searched for other intelligence in our universe for many years using a variety of scientific methods, but to date nothing has been detected. Certainly it is unlikely that any other civilization will be concerned at our demise, or attempt to prevent it from occurring. In earlier times the world was believed to be the center of the known universe and the human race has developed an unbelievable sense of self-importance. We seem totally unable to accept the fact, unpalatable though it may be that we are nothing but an insignificant speck in the grandeur of space.
From the beginning of recorded history there have always been the myths of religion that there is a continuation of life after death in some unidentifiable place where we will live for eternity in peace and plenty. Similarly the end of the world has been portrayed as the beginning of a new era, and following some unidentified period of struggle and suffering we will arrive at a new civilization with complete freedom from the ills that we suffer today. While these myths still continue to fuel the emotions of many people, starting at the beginning of the last century we have slowly turned our hopes for our future to science.
We have harbored the belief that science will be capable of devising ways of prolonging society by super human methods that at present are totally unknown. In more recent years the flood of pseudo scientific movies and TV programs has supported these ideas. These have ranged from moving all of society to a new and younger planet that at this time we have not yet discovered, to building new cities in space to house all our people. It has been suggested that we will be able to transfer our civilization to Mars or the Moon or at least mine these planets for the essential materials that we will have exhausted in our own world. Perhaps some intelligent beings from another planet will come in their flying saucers and solve all our problems.
The idea has even been suggested that we will be able, by some method that is at present unknown, to travel through time and space with relative ease, and transport people and materials by ways at present not understood. These all make delightful stories and present some intangible hope for the future. However if we are honest with ourselves we know that none of these dreams are likely to be realized. Just consider the energy, the time and the cost expended in our current space program, and the technologies that had to be developed just to put up a few men into space. Also recognize that to maintain the three or four people on the space station we have to use the efforts of hundreds of people here on earth.
Unless we can develop totally new technologies, which at present we do not posses or even understand, it seems totally unlikely that we will be able to move more than a very few individuals to another planet. In any case, to date we have not found a single planet that will support life, as we know it, in spite of the efforts that have been used on this project. It would be pointless to set out on this long and perilous journey if we do not know where we are going. In addition our present technologies are totally incapable of moving this mass of people and materials using the world’s available resources.
Similar comments apply to building cities in space. To support life on the moon would require a tremendous number of support staff here on earth. It is impossible for our world’s population to find permanent and self-reliant habitation on that airless and desolate planet. This is not to suggest that all work towards these objectives should be halted, but rather that it seems unlikely that we will develop these capabilities in the foreseeable future. In addition we are fast consuming our limited non replaceable resources in this search. The option of moving to another planet or building a new home in space does not presently exist and it is unlikely that any method of making this happen will become available in the foreseeable future.
Whether there is a heaven or hell or some other dimension where our souls will continue for eternity is more a matter of faith than reality. We have to be honest with ourselves and admit that much as we would like to see our civilization sail on into eternity, it will inevitably cease. The eventual end of civilization is certain, so therefore does it matter if the world population continues to grow? The answer lies in the timing of the extinction of the world’s population and the way that this will occur.
If we allow our population to grow unhindered, then the end of our civilization will occur comparatively quickly. It will be the most ghastly and cruel event that the world has ever known. It will begin within the lifetime of some of the children alive today; indeed some signs of the future are already with us. We see the constant attack on our borders by people seeking to improve their lot, people who are so desperate that they will risk life and limb to come here and perform the most menial tasks. Consider what will happen during the next twenty years when these same countries that they are escaping from become even further over burdened with people. If we control our own population growth then our civilization can continue for many more centuries into the future and we can plan for the end of our civilization in a calm and ordered manner. However this will demand that we tightly control our borders and turn back the millions of illegal immigrants that now flood into our country. This however is not a popular concept and we will be termed "racist" or lacking in concern for others. However this then gives us much more time to attempt to develop technologies that may prolong our way of life. This is the choice we must make. We cannot make up for the lack of population control in the rest of the world. Here is the basis for the first choice open to us.
We have seen how the numbers of an animal species dwindles and dies when they exceed the ability of the food chain to sustain them. Our knowledge of science and technology can help us in this matter by enabling us to grow more food than ever dreamed possible but cannot eliminate the ultimate results. Even worse is the possibility of decimating our current renewable resources by placing an unacceptable demand on their ability to renew themselves. Only a century ago with few artificial fertilizers, the farmers had to leave their fields fallow every now and then just to retain their ability to produce crops. If we continue to demand more and more crops we may turn some regions into desert, as is already occurring in some parts of Africa. We fished the oceans for many years but now we have over fished them to the point where some species are no longer available and the fishing has to be limited. If we take no action of any kind to limit population growth we will eventually face disaster as the peoples of this world fight for a share of the declining food, water and other items necessary for life. With citizens dying from starvation because the population has exceeded the limit of food supplies, with no electrical power because of a lack of oil, with many drinking water supplies polluted, war will seem a small price to pay to assure the continuation of a nation.
We have already seen this occur in some measure in nature, for example where a particular species has died out because man has ruthlessly hunted or fished a particular area. We have also seen examples where this is occurring because man has altered the habitat of a particular species such as the great apes. We are already seeing human examples of this in some of the African countries, where starvation has initiated discontent and interracial conflict. Millions have already died but the world has largely ignored the problem because these are little known small "third world" countries. We are dramatically altering man’s habitat and the changes will continue and accelerate as the world’s population grows.
No matter what we do, depending on how quickly we can take action and just how effective this is, we face a very different life style than we live today. The past century has seen tremendous changes because of the growth of science and technology, and these changes will continue. However we will see an ever increasing and dramatic change in the direction of our new development, that will inevitably grow quickly as our non replaceable resources become depleted. This will involve the changes to our lifestyle that will be necessary for life to continue without these resources and the development of other ways of providing the services that will be coming to an end as the various materials are consumed.
For example one major concern will be finding a method of transporting goods when the oil supply is totally consumed in 40 to 45 years time. Will we have to go back to the sailing ship and the canal barge towed by horses? If the world population continues to grow then perhaps that will be the only method available to us. If the growth in the world population can be checked we may be able to produce some fuel from replaceable resources.
No matter how we adapt practically to the more limited resources, it is inevitable that we will have to accept a very different social structure. We have become accustomed to our system of capitalistic freedom that has stood us well during the past few centuries and has overcome the thrust of communism and the more dictatorial systems. We have come to believe that here we have developed a society that surpasses all others. With a growing population this is certainly the case, but when we have limited resources it is unlikely that we can continue to operate in this manner. If we do not limit our population then we will eventually have to exert more controls such as rationing to assure that all our citizens receive an equal measure of what is available, and perhaps we may eventually have to define who can live where.
If we ultimately manage to control our population, then we will also see a very different social structure. With a stable population we will have a stable market place. We will no longer be able to look to growth as providing quick economic success; instead we will have to concentrate on improving our share of the fixed overall profits by very slow growth developed from better products and services. Some of the traditional methods of achieving wealth will disappear. With a stable population, real estate and property development will not provide the ability to quickly make a fortune.
By exerting some measure of self-control, by looking at all the facts, as we know them, we can dramatically prolong our civilization. We can provide many more fruitful years during which time, although it seems unlikely, a solution to our eventual demise may be developed. We can in the interim avoid pain and suffering for many of the people of this world.
Chapter 5. What Has Been Done?
At the present time there is no overall plan to limit the growth of the world’s population. The future of our civilization is relying on the philosophy that briefly states "As the standard of living and the degree of education in the various countries improves, the birthrate will automatically slow down". Perhaps this may eventually occur, and certainly at the present time it seems to be the only voluntary system that has any chance of success.
However this philosophy is largely unproven, and the predicted figure for the peak of the world’s population varies so much from one authority to another that it can be taken as nothing more than a "best guess". One study suggests that the population will peak at 9 billion in about another 70 years and will not start to decline until the 22nd century. Another study suggests that it may stop growing in the next century. However another expert comments that "You can’t predict the future" and this appears to be the situation.
In the last 50 years the world’s population almost doubled to just over 6 billion people. The United Nations gave an assessment in 1998 that the world’s population would increase by a further 3 billion in the next 50 years. An expert from one of our most prestigious universities predicts that the world population will reach 12 billion before it begins to decline. He predicts that this eventual reduction in the world’s population will occur only because of shortages of food, fuel and other essential resources that will cause widespread deaths from famine.
Because of various religious and political pressures, the expected reduction from social changes may indeed never occur. For these very same reasons, in some countries, an improved standard of living may trigger off even larger families. Even if an increasing standard of living causing a reduction in the birth rate, by the time that the world’s population has stabilized it may have increased by at least a further 50%. The present level of population may well have already exceeded the total number of people that the world can support without permanently depleting some of our replaceable resources. We have to ask ourselves how we are going to support a further 3 billion or more people. As one Third World official told me, "We are heading for the worst famine the world has ever seen and there is nothing that we can do about it".
China is the only nation in the world that has taken any truly effective steps to hold their population in check. Their action caused an outcry from many other nations, but the Chinese authorities should have been applauded for recognizing the danger that was facing their country and taking appropriate action. Certainly they have at times used draconian methods to limit the number of children per family, but it is not easy to see what else they could have done. When visiting China I have never seen the hordes of sickly, hungry children that are so obvious in some of the neighboring countries. The children of China appeared healthy, educated and well cared for. In addition they were obviously loved and treasured as the caretakers of the country’s traditions and way of life. India has tried a more voluntary approach, offering men the equivalent of one year’s wages if they will submit to sterilization. I have been told that this has made very little difference to the overall birthrate, largely because of traditional and religious reasons.
Many other countries have made some attempts to hold their population in check, but to date they have had only limited and temporary success. There are so many practical and physiological reasons why large families can be desirable, and even more reasons for failing to take the necessary precautions to prevent conception. Efforts to date have been piecemeal and without an overall world plan. This has resulted in reductions in some areas that have been negated by an inrush of people from those areas where the population continues to increase unabated. This movement is inevitable as people struggle to improve their quality of life, but will almost certainly eventually trigger off antagonism and even physical violence as residents of a particular area experience a lowering of their standard of living because of the incoming flood of newcomers. We have already seen signs of such a conflict on the Mexican/USA border, where Mexican citizens risk their lives to illegally enter the United States and then work for minimal wages often under miserable conditions that are however much better than they could find in Mexico. Similar conditions apply to India and Pakistan, and their peoples can be found in menial jobs throughout the Middle East.
There has been no coordinated world effort to hold down population growth; indeed in some countries the people have been encouraged to produce large families, largely to provide support for a particular religious or political group or policy. It was recently reported that one African country was proposing that polygamy should be made legal so as to increase the number of births and thus the population. The Roman Catholic Church actively discourages birth control except by somewhat ineffective so called "natural" means. Without worldwide planning and agreement it is unlikely that we will ever achieve any permanent control of the world’s population. It will certainly never be realized until the consequences of overpopulation are described in plain terms and given the publicity that will take the message to all peoples everywhere.
Unfortunately the cause and effects of population growth involves such matters as birth control, sexuality, and other subjects that are generally not discussed openly. Religion and personal beliefs also color this entire matter and consequently it becomes difficult to review the subject objectively. One individual explained to me that the philosophy promoted by his religion is that a large family is perfectly natural and should be encouraged. He told me that "There is no need to be concerned, God will provide". Unfortunately as a visit to any of the third world countries will show, the only things that have been provided are hunger, sickness and misery.
Politics inevitably enter into the matter, as some leaders struggle for power and look to the support of the people through adopting the more popular beliefs. The final and in many respects the strongest opposition to controlling the world’s population comes indirectly from business and industry.
The current life style in most of the major industrial countries depends on capitalism, competition and a growing demand for the many products and services that we produce. For some years in the future this demand can be sustained by steadily improving the economy in many of the less advanced countries. However to maintain this growth eventually demands a constantly increasing number of consumers. This in turn will require a growing population. This then infers an increasing consumption of the world’s resources, and a subsequent increase in pollution. We are already seeing many signs that demand is outgrowing resources, and in spite of all of the efforts to control pollution it is a growing matter of concern in many of our major industrial and urban areas. With a greater understanding of the effects of pollution on our environment this is also fast becoming a rural problem. We can see clearly the immediate effects of pollution but the long term effects are not truly understood and may not be discovered until years into the future, when it may be too late to correct the resulting situation.
Competition has in the past proved an excellent method of allowing the best to survive, forcing business and industry to seek the most efficient methods of producing the products that their customers demand. However, as the raw materials that industry uses become scarcer, this system will not work. We are already seeing this in the oil industry, where the OPEC organization now controls the price of oil simply because their members own the major part of the world’s supplies. This form of monopolistic control will continue to grow, as the sources of other raw materials become scarcer. This is currently being accepted with respect to oil, but what happens as the supply becomes reduced still further and the price rises to $10 or even $20 per gallon. What happens when there is a similar shortage of food or clean water? Will the suppliers be permitted to charge whatever the market place will accept, even when people are starving?
When we consider all of these factors, it starts to become obvious that taking truly effective corrective actions to reduce or even control the world’s population will involve a total change in many of our cherished beliefs. Depending on the ultimate level at which the population can be stabilized, we may well see erosion of our freedom to live as we wish. When we see shortages of essential materials pushing prices beyond that which the ordinary family can afford, there will inevitably be a demand for rationing. This in turn will require very tight control of the storage and distributions of the materials in short supply. Inevitably this will bring about controls on how and where we can live and the curtailment of many other freedoms to which we have become accustomed. Many older people have seen examples of this happening during World War 2..
Who would have believed fifty years ago that we would be limited as to the fertilizer we are allowed to use on our lawns, the composition of the paints we use on our houses or the color of the bags in which we place our garbage? Twenty years ago I could burn the brush in my garden whenever the weather was suitable. Now I have to obtain a permit and call the local police before and after burning. Slowly our freedom to live as we wish is being eroded, to assure that we do not harm our neighbors or the environment. As the population of the world increases and more people are packed closer together these things are inevitable. We are steadily becoming enmeshed in a web of laws that are primarily intended to nurture and protect us, but inevitable take away our freedom to live as we wish.
So in summary we have done very little or nothing to even attempt to control the growing population of our world. Indeed we have pushed the subject aside as if it did not exist, or was of no concern. It is rarely if ever considered in our political deliberations or even mentioned in the press or on our TV programs. Certainly it can be an embarrassing and touchy subject as it strikes at the very heart of our society. The suggestion that families should restrict the number of their children runs contrary to many generally held views. It can also be damaging politically as it attacks so many popular emotions. However none of this will change until the facts are laid out in a simple and unbiased manner for open discussion.
We have refrained from taking action because of social, religious and political attitudes, and also because our present economic system is based on a growing consumption. Depending on the way we approach this problem in the future, we can look forward to a chaotic and cruel end to society, as we know it, or a longer and more tranquil, though more controlled existence. If we look at all the facts objectively and without prejudice or bias, it becomes obvious that disaster looms very close, and even if we take immediate action we may be too late to eliminate many of the dangers that await our civilization.
Even if we begin immediately to control the world’s population this will only be the beginning of several long and at times difficult tasks. First to calculate just how many people the world can maintain over the long term. This will demand that we consider the eventual life style that we will accept, and even more difficult, we will have to ask ourselves if we are "Our brother’s keeper". Are we prepared to lower our standard of living and ration our food so that other peoples can avoid starvation? Are we prepared to give up our personal transport so that food and other necessities can be delivered to the masses in other countries? These are not simple questions and the answers are even more complex. However these are questions that will eventually have to be answered. The need for all the peoples of this world to work together in harmony towards a common goal is without any doubt the most difficult aspect of the entire situation.
We must quickly and honestly meet together without nationalistic or other personal prejudice and agree on a plan to first halt the world’s population growth. Then we must work to reduce the number of people in the world to a level that can be sustained for the long term. If we cannot do this, then the alternative is too horrible to consider.
Chapter 6 Resources.
If we want to maintain our civilization on this planet for the longest possible time, the world will ultimately have to rely solely on our renewable resources as it is inevitable that our non-renewable resources will eventually be totally consumed. For example oil and natural gas will probably be two of the first sources of energy to become totally depleted. Currently the reserves of oil are estimated to last for about 40 years, although this figure is steadily being reduced by the oil companies as their exploration for new sources fails to meet their forecasts. Coal and natural gas are expected to last considerably longer, although in the past year the estimate of the life of natural gas resources has also been revised downwards.. By the year 2050 therefore, it is unlikely that we will be able to rely on oil and gas as our primary source of energy. We will still have coal, which currently is estimated to be able to provide fuel for another 200 years. However this will require considerable work to eliminate the contamination and greenhouse gases that are an inevitable result of burning coal. Some gas and such renewable sources as solar energy, hydro-power, geothermal, wind power and so on will be available and no doubt will become more widely used as the oil supply becomes more and more expensive. Using current technology however these sources cannot replace the oil supply and atomic power will almost certainly become our major source of energy. In spite of the many negative reports that are publicized regarding this form of generating electricity it will almost certainly continue to provide most of our electrical power until some other source of energy such as atomic fusion can be developed into a practical system.
Our renewable resources will also become depleted if we use them faster than they can be regenerated. Therefore because they are inherently limited by the rate at which they can renew themselves, some form of rationing may well be required. Developing the plans for defining who will use these resources and when they will be used will inevitably generate disputes and it will demand considerable wisdom and understanding to control the conflicts that will occur. For example should our rivers be allowed to run free or should they be dammed to provide electric power? Do we allow the forests to remain in their natural state or will they be developed to grow timber for homes and fuel? We have to face hard facts and they are that this can only be decided once we have agreed on a world wide level of population.
We will have to decide how much land will be put aside for food and other renewable resources and where this will be located. We will have to take into account that we may not have the resources to easily and quickly transport goods over long distances once the oil supplies are exhausted. Without the oil fields as a source of synthetic rubber, we will have to revert back to the use of natural rubber and this will require that we return some of the jungle back to rubber plantations. This in turn will compete with the development of plantations for palm oil, which will become a necessity when there is little or no oil from ground sources. There are many other examples where the use of natural renewable resources for one particular purpose will conflict with other uses. Hundreds of square miles of desert may have to be covered with solar cells to provide power and this will inevitably damage the natural habitat of many animals and birds. Similarly the use of the wind to generate power will line the plains and hills with rows of windmills and will take away ground that could otherwise be used for food producing purposes as well as endangering the birds that fly into these propellers. A speaker was recently discussing alternative energy sources and claimed that wind power could supply all our electricity needs. It would cover so many thousands of acres of land he said, but throughout his talk he never mentioned the effects of the rising population, the increasing standard of living, or even the population figures he used to make his calculations. All of these must be determined and used when making these forecasts.
We generally define a particular resource as renewable or non-renewable. Non-renewable resources refer to those materials that are in limited supply and will not be replaced during the estimated lifetime of our civilization. We are primarily considering those items that were slowly produced as the world has evolved, such as the metal ores, and oil. Renewable resources on the other hand are those materials that will become renewed as a result of the natural evolution of life on this earth. Here we are considering such things as plants and trees, wind and geo-thermal power, sunshine and rain.
In many cases it will be extremely difficult to estimate just how long a particular non-renewable resource will be available. First of all we generally have to assume that its use remains the same as today and this of course will not necessarily be the case. For example consider how the development of the jet engine increased the demand for alloys that would function at high temperatures. Then supersonic aircraft initially required titanium for their skins, to be replaced with carbon fiber composites as they developed further. All of these changes involved the use of non-replaceable materials that could not have been foreseen a decade earlier. On the other hand there was recently a TV program showing that a new development showed plastics that had previously been made solely from oil that were now being made from vegetation.
Consider the increasing use of steel framing in the building industry in place of the traditional timber, as wood has become scarcer and its cost increased. Although at present it appears that there is an almost limitless supply of iron ore, we are in fact digging into our non-replaceable supplies. We are using up our timber faster than nature can replace it. On the other hand using metal in our homes and offices is not merely eating into our very plentiful supply of iron ore, it is also digging into our current non-replaceable energy supply which is being used for the smelting and processing of the metal. This is a prime example of too great a demand on our replaceable resources, our forests, forcing us to dig deeper into our non-replaceable alternative materials, iron ore. Our forests may well be some of the more important natural resources that are necessary to maintain life on this planet. We have to determine exactly how great a world population can be supplied from them, without endangering their ultimate existence.
We have to consider just how the use of our non-replaceable resources will vary as the changes in our society and technology develop. Attitudes will also have to change. Just as now we have to seek approval before we can install any process that could possibly cause pollution, in the near future we may have to seek permission before we dig deeper into any of our resources. Obviously we will have to consider every new demand on our resources and revise their estimated life with every change to the world’s population. No matter how variable is our estimates and how inaccurate, it is essential that we develop an understanding of the lifetimes of these resources and update them as necessary.
We must understand not only their lifetime but also the factors that can change this figure or it will become impossible to effectively plan for their replacements. It is a fairly simple matter to move towards using steel framing for our houses, as wood becomes scarcer. It will be much more difficult to arrive at alternative fuels to replace gasoline when the supply of oil runs out. Indeed there may be no substitute and we will then have to develop a totally different society that can operate without personal transport. By understanding the remaining lifetime of our non-replaceable resources, we can see more clearly which will run out the soonest and therefore where we need to direct our efforts to compensate for their loss.
Until the present time we have used the world’s resources as they have been discovered without any concern for the total amount available. This was understandable with the world population of a century ago, but as the number of people in our world has dramatically increased we can no longer operate in this way. We have only to look back in history to find cases where a particular resource has been totally "cleaned out", such as the tin mines in Cornwell, England. These mines had been in existence since Roman times but with the adoption of the steam engine to pump the mines clear of water, and provide traction in the pits they were much more aggressively mined. With the increasing demand for the metal, the mines were soon exhausted and the supplies from the Far East soon became the prime source of tin. Steam power became practical through the development of the coal fields, another non replaceable resource, in the Northern areas of England and the border country with Scotland. The railways that enabled the coal to be easily transported were also of prime importance in developing this form of energy. In considering the supply life of any particular resource therefore we also have to recognize the other materials may be involved and recognize the effect on those particular resources.
Some resources are difficult to categorize as renewable or non-renewable, for example water. At first glance it appears ridiculous to define water as a non-renewable resource, we have all seen the rain that brings new life to the soil and fills our streams and rivers. However when we consider the deep water far below the surface of the land, it is obvious that we are pumping out this aquifer much faster than the water can be replaced. In many places where irrigation has to be used to maintain the productivity of the fields, we have seen a dramatic drop in the water table level. These supplies cannot be quickly replaced and the calculation of the time to replenish them must be part of the overall facts and figures. We are here looking at times of many years and not something that can be replaced by one or two rainstorms. So in the short term water in many areas has to be considered as a non-replaceable resource and the way that we use it carefully controlled.
When we come to calculate the life expectancy of non-renewable resources, we also must consider the materials and energy that may be required to make the final product from the raw materials. For example iron ore is of itself almost useless; it is only after the expenditure of fuel to smelt the ore that useable metallic iron becomes available. We also have to consider the amount of pollution this will produce as well as the materials, both renewable and non-renewable that are involved in controlling this pollution. For example, when we consider the automobile, it is quite easy to calculate the amount of gasoline that any car will use in its daily use. What is more difficult is to calculate the amount of energy used in its manufacture whether derived from gas, electricity or oil. Finally we have to calculate how much energy and materials have been expended in controlling contaminating emissions during the production of the raw materials and the manufacture and operation of the vehicle. In addition there are the materials used to build roads, bridges and similar facilities. All of these factors affect the use of non-renewable resources, and will increase the amount used beyond the simple measure of gasoline pumped into the tank.
We must consider our non-replaceable materials as the tools we have been given by nature to assist in developing our society, our technology and our overall way of life, in preparation for the time when these resources will no longer be available. The calculated life of these materials tells us just how long we have to complete these changes. By the time each non-renewable material has been totally consumed we must have made the necessary adjustments to compensate for its loss. In many cases the change will not be too difficult, for example to use natural rubber from trees in place of the synthetic material derived from oil. In some cases the change will be very complicated and may require a complete change in our life style. For example the changes to our transport system resulting from the end of our oil supply and the lack of plastics from this source will not be quickly developed.
It is easier to see the effects of mankind on our renewable resources if we look at some of the lands where civilization has grown fastest. In the Middle Ages timber was the only available material for building ships, and the sturdy oak trees of Great Britain were soon in demand for building the British Navy. "Hearts of oak are our ships" goes the old song that records those days. As the navies of Spain and Britain faced each other the number of trees that were cut down increased until there were insufficient to supply the required amount of timber and wood had to be obtained from other countries. In addition charcoal was then being used for the smelting of iron ore, which only further depleted the available timber. The forests were decimated and have never recovered. Here was a fine example of permanently damaging a renewable resource by removing too much, too quickly.
When a particular resource is freely available, it is very easy to assume that the supply is limitless and oil is probably the best example. Not only is it the most widely used form of energy, but many industries have been developed around the supply of oil. Plastics, chemicals, synthetic rubber, dyes and some pharmaceuticals are all largely derived from the oil.. To date there appears to be little effort to develop alternative resources that will replace oil in these fields when the supply is eventually exhausted. This is in spite of the fact that the best estimates state that this will occur in about 40 years time. The world has been very well explored for this valuable commodity, and even if further oil fields are discovered it does not seem likely that this figure will increase by more than 10 or 15%
The first step that must be taken is to estimate how many people the world’s renewable resources can maintain, depending on their rate of self-renewal. This will require very careful research and planning, as each particular resource will show completely different figures. For example we may find that we have enough fresh water to maintain quite a large population compared to the number of people that can be permanently supplied with timber from our forests. Here again the number may vary depending on the building methods that are to be used. A timber-framed house will demand much more wood than a brick building, but brick requires fuel for the firing of the clay and in the manufacture of the cement used to bond the bricks.. Similarly the figures will be affected by the degree of pollution that will become acceptable based on the agreed upon population figures. Burning wood to heat our homes uses only renewable resources, but if the subsequent pollution is to be kept within limits then smoke control will be required which may involve the use of exotic metals.
None the less, even though the answers will be difficult to estimate we have to develop them. They will give us a start in defining our ultimate world population target, and when we will have to achieve this figure. If our estimate is overly optimistic then we will soon find shortages that we will be unable to fill. We may also find that we have taken more than nature can replace and effectively wiped out a renewable resource. We have already decimated some species through our uncontrolled development. This is a case where caution is absolutely necessary. Tied up with this estimated final population figure is the need to determine exactly what life style we intend to provide for our future generations.
If we are to be content to provide each family with a one roomed apartment with only the essential facilities, we can support more people than if we provide each a home with all the facilities that today we consider necessary. So here is the other factor that has to be entered into the equation. We have to try and visualize the type of life that will exist in the future and the options we can offer our citizens. Similarly once we calculate how much food is required, we have to consider where this is to be grown, how much fertile land is necessary and how the food is to be harvested, stored and transported. Once the oil supply is depleted we have to know how we will supply energy to the farmer to prepare and harvest his crops. Depending on our ability to supply electricity, we may find that refrigeration and long term storage of some foods will not be possible, and this may demand that food production be set up close to the centers of population. Without fuel for the internal combustion engine, or oil for the boilers of our ships, the transport of large volumes of foods from overseas may be difficult or even impossible. This in turn will limit the number of people that can be supported in some of the more remote places with a less favorable climate.
The change over to our ultimate way of life will have to be carefully planned, and will occur in stages as the supply of non-renewable resources begins to impact our current civilization. For example when copper comes into short supply, this will dramatically impact our ability to provide electrical power, and transmit it over long distances. It may eventually be possible to develop other conducting materials from renewable sources but at present this does not appear likely. It is however a possibility that must not be totally forgotten and is an important research for the future
All of the above assumes that non renewable supplies of such raw materials as iron, copper and similar commonly used materials will be available for the foreseeable future. It also assumes that sound recycling becomes part of our normal way of life to prolong the availability of these resources. Unfortunately for many years, when nonrenewable resources were plentiful, recycling was rarely considered a necessity and thousands of tons of scrap materials were buried in waste sites. It may well be that in the future we will see some of these scrap materials being recovered as valuable resources.
It can be seen that this is far from a simple subject, indeed what at first appears to be a simple exercise in statistics quickly evolves into a complex decision making responsibility that will affect the lives of everyone on this planet. It demands very close cooperation between the various countries, which may ultimately be the single most difficult thing to achieve. It cannot be effective unless there is complete and universal agreement.