One of the most interesting findings of the census of 2001 was that a million people were missing. Should we be happy that we have more space and less mouths to feed? I don’t know.

Overpopulation

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Overpopulation

by John Kuti (written in 2003)

I come from the south of England, in the most densely-populated corner of a small island, which, you might think, is full of people. (The UK as a whole has 2.4 people per hectare.) I have never gone hungry. The only time when I wish there were less people is on rush-hour trains. However, one of the most interesting findings of the census of 2001 was that a million people were missing. Or at least there were a million people less than the authorities expected. Should we be happy that we have more space and less mouths to feed? I don’t know.

As I start writing this article the world population (according to the Office of Population Research at Princeton University) stands at 6,315,850,431.

Doom, version 1

In 1798 Robert Malthus wrote an essay which got economics the name of the dismal science. It was called “The Principle of Population”. He said that it was impossible for the number of people to increase, and even worse, it was impossible for the standard of living to rise. The argument went like this:

1. population naturally increases geometrically: 2, 4, 8, 16…

2. food production increases arithmetically 2, 4, 6, 8…

3. so, population will be controlled by lack of food, the same as it is for animals. Some people will always be starving.

A lot of people disliked Malthus’ point of view. Often, because it seemed to go against the idea of progress, which was so important for other social theories of the time. Anyway, the experience of the next two centuries shows that something must be wrong with the theory. In the 19th century world population rose from 1 to 1.7 billion. In the 20th, it increased to about 6 billion.

Doom, version 2

In 1961, J.G. Ballard wrote a story called Billenium. It’s about a world where the population has gone on increasing at 3% a year to reach a figure of at least 20 billion, although the true number is kept secret. To make space for growing food, everyone lives in giant cities where the buildings are divided into little cubicles. A single person can have 4 square metres and a married couple six. Everyone has enough to eat, but life is certainly very inconvenient. People spend most of the time waiting in queues for the bathroom or anywhere else they want to go.

Reality

The real situation is not as bad as these alarming predictions. A very surprising and dramatic change is happening in the world, but it is not what Malthus or Ballard predicted. To understand the statistics, we need first to think about the two ways the number of people can go up.

The Fertility Rate

The most obvious way to increase population is for more babies to be born. If the population is exactly constant, the average woman has 2.1 children. This number is called the "replacement rate". These rates are going down very fast. The peak was in the period 1965-75 at 4.9, now the rate for the world as a whole is 2.8. However, there is still a big difference between the developed countries, where the rate is 1.6 and poor countries where it is 3. To quote some extreme examples, in Italy the figure is 1.2 and in Zambia 5.6.

Life expectancy

The other reason why there are more people now is that we live longer. This figure also shows a dramatic change. The people born in 1950 could expect, on average, to live 45 years. Now the world life expectancy at birth is 65, and the United Nations predicts this will increase to 76 in the next 50 years.

Predictions of doom

Malthus and Ballard were still right about some things. The dismal picture painted by Malthus is still true in poor countries where 18 million people starve every year, and more than a billion people don't have a supply of clean drinking water. Ballard is right about the trend towards city life. By the year 2006, the United Nations predicts that more than 50% of people will live in cities.

City life in the developed world

At least in the rich countries, the move into cities seems to be connected with falling fertility rates. It is more expensive to have a child in the city, and children are less useful as workers. Women receive a better education and are able to work – so they have more to lose by becoming mothers. City life seems to encourage individualism – people become more interested in getting an education and a career. They marry later in life, and divorce more often, so producing smaller families.

At the moment, it seems quite possible that the same pattern will be repeated everywhere. One UN forecast now foresees a world population of about 5 billion in 2100. But, the more time you spend looking at predictions the more you realise that the human race is a surprising phenomenon. It looks like we will have a clearer idea of what will happen in ten or twenty years time when the present generation of parents moves beyond child-bearing age.

Now there are 6,318,042,422 people.

Glossary

average (n.): the figure you get if you add together a set of numbers and divide that total out equally.

census (n.): the official procedure for counting all the people in a country.

constant (adj.): staying the same, not changing.

cubicle (n.): a very small closed off space, e.g. a shower cubicle.

densely-populated (adj.): with a lot of people living close together.

dismal (adj.): dark, sad and depressing.

encourage (v.): to make something happen or increase.

figure (n.): number.

foresee (v.): to predict, to see something that might happen in the future.

go on –ing (v.): continue.

hectare (n.): the size of a square 100 metres by 100 metres.

lack (v.): not having something.

peak (n.): the highest point.

predictions (n.): things people say about what they think will happen in the future.

starving (adj.): dying from lack of food.

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We have to be not worried about overpopulation a lot of technologies and sciences satisfied the human needs, our God guarantees us all population needs whether good or miserable until the end of earth life.
In the past time the man was very big and lives longer so he consumes a lot even the number was down……so we never be worried about overpopulation.

I'm Kocsis Evelin Viktória. The world's population: 7. 500. 000. 000. That's graw!

My country, Vietnam population is developing very quickly, if you go out the country around some years and when you come back you will be suprisely and give a question that why there are many people , a lot of cars and vehicles on the street. Whenthe country develop too quick, polluted environment is of course.

That was really a good article. Because it discussed the overpopulation phenomenon very well. If we looked at what the world is suffering now such as wars, illnesses, hunger, and etc. I think decreasing of population either in developed countries or in poor countries will not be a bad thing. At least with this the human nature will not go to a horrible disaster.

I come from Egypt one of  the most populated countries, and it is full of people especially the capital Cairo where I live. The time when I wish there were less people is all-time of the day especially on rush-hour. Nevertheless there were a million people more than the authorities expected. I think it is impossible for the number of people to decrease, and even worse it is impossible for the standard of living to rise I hope that population won’t be controlled by lack of food.

The fertility rate in the developped countrues is decreasing. It is true that women receive high educations and they marry later in life.  And some wome don't want babies , because they don't want  to loose their careers and their enjoyable life. But in Japan there is an obvious phenomenon. That is there are more  couples who don't have any babies eve if  they want. There are much radio waves around us and this may cause the infertility.

Your texts:

Bao Tan writes “Somebody says :" The world is getting small for us", and this is exactly what we are facing nowadays. In fact, there are more than 6 billion people living on earth and the figure is increasing rapidly year by year. An obvious consequence is we have not enough space for living if overpopulation keeps happening longer. As we know, overpopulation brings about poverty, pollution, diseases, bad health-care.... and many things as bad as them. China ranks first in largest number of population, where the figure is over 1,2 billion and expected to be higher in future. Vast attempts have been proposed to reduce the number of population. Birth-control methods, population education programs, family planning programs... are carried out as ways to keep the number standing still, but it seem like not enough, so we need new effective solutions for this matter.”

BuiDuyQuang writes “Nowadays overpopulation is the most important problem in the world. There are more than 6 billion people in the world. China has a population of more than 1 billion. If the population increases the environment will suffer more. The population depends on the babies that are born, the lack of food and finally the fact that people live longer. The last thing I want to say is that if we want to decrease the population we should try to keep the babies from being born."

buiduyquang thank you for your comment, it is very interested.