A
great presentation, though perhaps over-optimistic, by Prof. Hans
Rosling: https://www.youtube.com/watch?v=FACK2knC08E
an
opposing view:
Overpopulation?
– current world population on 18 November 2019 is estimated at
between 7.60 and 7.4 billion and continues to rise.
http://www.census.gov/popclock/
It
reached 6 billion only 20 years ago in October 1999 and 7 billion in
October 2011 according to the United Nations Population Fund.
http://en.wikipedia.org/wiki/World_population
Today's
world population is more than double the population in1970.
http://www.worldometers.info/world-population/world-population-by-year/
World
population is estimated to rise to 9.8 billion by 2050 and 11.2
billion by 2100 when it should peak and level off. See the video with
Hans Rosling above.
In
1900 the world’s population was only 1.6 billion, a little more
than a fifth of today’s total.
http://geography.about.com/od/obtainpopulationdata/a/worldpopulation.htm
1. China
|
1,389,618,778
|
6.
Brazil |
210,301,591
|
2. India
|
1,311,559,204
|
7.
Nigeria |
208,679,114
|
3. United
States
|
331,883,986
|
8.
Bangladesh |
161,062,905
|
4. Indonesia
|
264,935,824
|
9.
Russia |
141,944,641
|
5. Pakistan
|
210,797,836
|
10.
Mexico |
127,318,112
|
For
a list of the countries with the fastest population growth rates see:
Are
there now too many human beings?
The
scientific
consensus
is that the current population
expansion
and accompanying increase in our use of the world’s resources is
linked to threats to the ecosystem.
The InterAcademy
Panel Statement on Population Growth,
which was ratified by 58 member national
academies
in 1994, called the growth in human numbers "unprecedented",
and stated that
many environmental problems, such as rising levels of atmospheric
carbon dioxide,
global
warming,
and pollution,
were aggravated by the population expansion.
At the time, the world population stood at 5.5 billion, and
optimistic scenarios predicted a peak of 7.8 billion by 2050, a
number that current estimates show will be reached in a couple of
years. The rapid growth in global population thus has dramatic
direct consequences for the number of people in the developing world
(particularly in poor countries in Asia and Africa) who already face
or may soon face starvation, hunger or malnutrition as well as
serious consequences for sustainable global development (given the
ultimately finite nature of fossil fuel reserves and raw materials
such as minerals, chemicals and rare metals) and a range of
environmental issues. Though the percentage of people living in
extreme poverty has fallen, the percentage living in relative poverty
has risen. Moreover, a vast number of people live just above the
poverty threshold and are therefore at risk in the event of
environmental or natural disasters and price variations.
https://www.un.org/development/desa/dpad/publication/world-economic-situation-and-prospects-october-2019-briefing-no-131/
https://en.wikipedia.org/wiki/Human_overpopulation
https://en.wikipedia.org/wiki/Human_overpopulation
The FAO
Food Price Index*
(FFPI) averaged nearly 170 points in September 2019, unchanged from
August but 3.3 percent higher than in the corresponding period last
year. While in September sugar prices fell sharply, the decline was
almost entirely offset by higher prices of vegetable oils and meat.
The Dairy index was down only marginally, whereas that of cereals
remained steady.
http://www.fao.org/worldfoodsituation/foodpricesindex/en/
Food
security, SDGs and children
The
number of hungry people in the world is no longer falling and stood
at 820 million in 2019.
https://www.vaticannews.va/en/vatican-city/news/2019-07/holy-see-un-hunger-report-2019-arellano.html
climate
change
climate
change also affects farming:
Although
global food prices are only slightly higher in 2019 than in 2018,
when differences in income are taken into account, estimates reveal
that food prices in sub-Saharan Africa are 30% to 40% higher than
prices in the rest of the world at comparable levels of GDP per
capita.
So
in the worst case scenario, if the global economy were again to face
real difficulty and if this were to combine with climate change and
poor harvests this could mean falling incomes, rising population and
rising food prices. This could significantly worsen the situation for
the world’s 820 million people already suffering from
undernourishment, i.e.
those facing chronic food deprivation,
in 2019 (and put at risk the additional 2 billion people expected to
be added to global population by 2050). More people would be pushed
into poverty and extreme poverty as defined by the UN and face long
term food insecurity. So despite significant long term progress on
reducing poverty and hunger (SDG1) there remains much to be done and
current trends are worrying.
https://www.worldbank.org/en/research/brief/poverty-and-shared-prosperity-2018-piecing-together-the-poverty-puzzle-frequently-asked-questions
http://www.worldhunger.org/
In
December 2018 the World Resources Institute estimates that the world
must sustainably produce 56% more food by 2050.
Thus,
many experts argue that given current population growth forecasts for
the developing world we will need another leap forward in terms of
innovation in farming technology and practices, like the Green
Revolution of the 1960s, simply in order to avoid widespread famine.
http://en.wikipedia.org/wiki/Green_Revolution
(also includes criticisms)
http://en.wikipedia.org/wiki/Norman_Borlaug
(often credited with saving over a billion people worldwide from
starvation).
However,
there are fears because increased food production has come at the
price of limited crop variety and biodiversity and has involved an
increased use of pesticides and more pollution. The growing use of
agricultural mono-cultures may not be sustainable in the long term.
food
scarcity, loss and redistribution
water
security
http://www.worldbank.org/en/news/press-release/2017/08/29/sustainable-path-to-water-security-urgent-priority-for-arab-world
Meanwhile
a different trend is affecting many parts of the developed world, low
fertility rates and an ageing population.
http://en.wikipedia.org/wiki/Population_ageing
http://en.wikipedia.org/wiki/Ageing_of_Europe
http://en.wikipedia.org/wiki/Demographics_of_Japan
http://en.wikipedia.org/wiki/Ageing_of_Europe
http://en.wikipedia.org/wiki/Demographics_of_Japan
The
economic effects of an ageing population are varied and there may be
some benefits for economies which are expanding. For example, older
people often have higher accumulated savings per head than younger
people, but may spend less on
consumer
goods.
Depending on the age ranges at which the changes occur, an ageing
population may thus result in lower interest
rates
and the economic benefits of lower inflation. Moreover, if the
population falls and GDP remains constant or grows at a very low
rate, (e.g. 0.2 % a year) per capita income actually increases in the
short term. Some economists, mainly in Japan, see further advantages
in such changes, notably the opportunity for progress in automation
and technological development without causing unemployment. They
emphasize a need for a shift from concern about GDP growth to the
idea of personal well-being.
However, given the recent economic slowdown in many developed economies none of this is positive or likely to help economies already characterized by low inflation, low levels of spending and low interest rates. Moreover, population ageing also increases some categories of expenditure, including some of those met from public finances. The largest area of expenditure in many countries is now health care, the cost of which is likely to increase dramatically as the population ages. This would present governments with hard choices between higher taxes, including a possible shift from taxes on earnings to taxes on consumption, and a reduced government role in providing health care.
The second largest expenditure of most governments is education and these expenses will tend to fall with an ageing population (there will be fewer people in school), especially if the economy begins to grow, as fewer young people would probably continue into higher education as they would be in immediate demand as part of the work force. However, with many countries facing high youth unemployment the numbers in higher education may grow.
Social security systems have also begun to experience problems. Predefined benefit pension systems are experiencing sustainability problems due to increased longevity. The extension of the pension period by people living longer has not been matched by a rise in pension contributions and has only been partly matched by an extension of the active labor period (a raise in the retirement age), resulting in a decline of replacement ratios. In recent years, many countries have adopted policies to strengthen the financial sustainability of pension systems, although the challenges regarding pension adequacy remain. One solution in favour of social soidarity might be a flat-rate pension (or nearly flat-rate) for all, regardless of (or with little regard for) the level of pension contributions made. Another is simply to raise the age at which one receives a pension on people born later. e.g. This is what is happening in many Europan countries. Those who prefer the free market may argue for the gradual abolition of public pension schemes in favour of the private sector, thus reducing the burden to the state.
However, given the recent economic slowdown in many developed economies none of this is positive or likely to help economies already characterized by low inflation, low levels of spending and low interest rates. Moreover, population ageing also increases some categories of expenditure, including some of those met from public finances. The largest area of expenditure in many countries is now health care, the cost of which is likely to increase dramatically as the population ages. This would present governments with hard choices between higher taxes, including a possible shift from taxes on earnings to taxes on consumption, and a reduced government role in providing health care.
The second largest expenditure of most governments is education and these expenses will tend to fall with an ageing population (there will be fewer people in school), especially if the economy begins to grow, as fewer young people would probably continue into higher education as they would be in immediate demand as part of the work force. However, with many countries facing high youth unemployment the numbers in higher education may grow.
Social security systems have also begun to experience problems. Predefined benefit pension systems are experiencing sustainability problems due to increased longevity. The extension of the pension period by people living longer has not been matched by a rise in pension contributions and has only been partly matched by an extension of the active labor period (a raise in the retirement age), resulting in a decline of replacement ratios. In recent years, many countries have adopted policies to strengthen the financial sustainability of pension systems, although the challenges regarding pension adequacy remain. One solution in favour of social soidarity might be a flat-rate pension (or nearly flat-rate) for all, regardless of (or with little regard for) the level of pension contributions made. Another is simply to raise the age at which one receives a pension on people born later. e.g. This is what is happening in many Europan countries. Those who prefer the free market may argue for the gradual abolition of public pension schemes in favour of the private sector, thus reducing the burden to the state.
Population
growth in developing countries also increases migration flows,
pressure on the allocation of scarce resources and the loss of
biodiversity. See:
http://www.population-growth-migration.info/
http://en.wikipedia.org/wiki/Immigration
http://en.wikipedia.org/wiki/Islam_in_Europe
http://en.wikipedia.org/wiki/Water_resources
http://en.wikipedia.org/wiki/Water_resources
http://dieoff.org/page57.htm
http://en.wikipedia.org/wiki/Sustainability https://www.wilsoncenter.org/event/hotspots-population-growth-areas-high-biodiversity
http://en.wikipedia.org/wiki/Immigration
http://en.wikipedia.org/wiki/Islam_in_Europe
http://en.wikipedia.org/wiki/Water_resources
http://en.wikipedia.org/wiki/Water_resources
http://dieoff.org/page57.htm
http://en.wikipedia.org/wiki/Sustainability https://www.wilsoncenter.org/event/hotspots-population-growth-areas-high-biodiversity
See
also the notes on this blog regarding the EU and migration. Though
many migrants are refugees seeking political asylum, others are
economic migrants moving to escape poverty, the threat of starvation
or simply to find better opportunities.
See
also:
The
New Population Bomb, Jack A. Goldstone, Foreign Affairs Volume 89,
No.1, Jan/Feb 2010
or
Against
The Grain, C. F. Runge and C. P. Runge, Foreign Affairs Volume 89,
No.1, Jan/Feb 2010
http://relooney.com/NS4053/0_NS4053_825.pdf
The
Demographic Future, Nicholas Eberstadt, Foreign Affairs Volume 89,
No.6, Nov/Dec 2010
http://www.demographic-challenge.com/files/downloads/68690e7b35d02ba894dda06bcdf415dc/dc_the_demographic_future_eberstadt_foreignaffairs_novdez_2010.pdf
Baby
Gap, Stephen Philip Kramer, Foreign Affairs Volume 91, No.3, May/June
2012
Some
ideas for an essay:
Size
of current world population and forecasts for the future / rate of
growth, current trends and the predicted slow-down in rate of growth
but only stabilizing in 2100 / statistics on number of starving and
suffering from malnutrition, and number of people now at risk of
starvation or malnutrition in the near future.
Growing
pressure on world’s resources and environment / food / water /
shelter / medical care / finite reserves of fossil fuels and raw
materials / the need for recycling on a much larger scale /
deforestation / desertification / land, air and sea pollution /
urbanization / destruction of rural habitat / endangered wildlife and
reduced biodiversity / an increase in carbon and other emissions
/climate change / examples and statistics ? / the difficulty of
asking poor countries to make sacrifices in terms of greener policies
Problems
for poor countries with high population growth rate / look at all the
above-mentioned factors but at a local level by focusing on the
statistics and information for one country or area in Africa or Asia
e.g. the Horn of Africa / also gender issues, e.g.
At
the moment we produce enough food globally to feed the world’s
population. The problem is the unequal distribution in the production
of food resources between rich and poor countries and the lack of
infrastructure in developing countries to allow the effective
delivery of food from other regions in normal times, or from outside
the country in terms of emergency aid at a time of crisis.
/
unemployment and underemployment (difficult of creating jobs as
quickly as the population grows) / poor distribution of wealth
leading to political unrest (and often repression by authoritarian
regimes) with bad, stagnant or worsening living conditions and
political instability / examples and statistics for any of these,
e.g. North Africa?
An
increase in migration from / the country to the city / poor,
overpopulated countries to other slightly less poor, more stable
countries / to wealthier ones e.g. to Saudi Arabia and the Gulf
states / to North America / to Europe / remittances sent back home /
examples and data for all of these
A
greater likelihood of the spread of epidemic diseases and the danger
of a pandemic as more people and goods circulate
Problems
for rich countries / aging populations / so without migrants or
raising retirement ages further there will be a reduction in the
workforce, and without continuous technological development and
greater automation there will be a fall in GDP / growing pressure on
welfare system, in particular on the health care system, the
education system and the social security and pension system / burden
carried by those in work / countries with declining population levels
and low growth rates may see a similar decline in their influence on
world affairs / immigration and cultural diversity can lead to social
conflict instead of harmony and cultural enrichment / problems of
acceptance and integration / security / terrorism
The
real and wider problem for the international community is the need
for coordinated cooperation strategies in which all states agree to
take part (and to honor their commitments) in order to overcome a
series of long-term challenges which now seem to be interrelated (as
set out in the UN's SDGs):
1) Dealing
effectively with environmental degradation and pollution, protecting
wildlife and biodiversity (any successful examples?)
2) Regulating
carbon emissions (and other shorter-lived atmospheric pollutants)
and slowing climate change ( describe current situation), reducing
pollution due to plastics
3) Avoiding
competition for scarce resources like clean water and food and
agreeing a more equitable distribution / avoiding wasting these
resources / examples, the water of the Nile and the countries of
North-East Africa / avoiding competition for fossil fuel reserves and
scarce raw materials
4) Regulating
migration, protecting the rights of migrants and fostering
integration, while enhancing security and counter-terrorism
5) Rapidly
developing alternative, greener, cleaner and renewable sources of
energy (preferably not bio-mass sources like ethanol which may reduce
the food supply) and reducing waste by using our resources more
intelligently.
6)
Increasing and diversifying food production. In 2019 the US
produces 32% of the world’s corn and 29% of its soybeans (critics
also argue that too much US corn is now used for bio-fuels), while 30
low-income countries are food deficit countries. In 2009 the FAO said
global food production needed to increase by 70% (and production
needed to double in developing countries) to support a global
population expected to reach 9.7 billion by 2050 and 11.2 billion by
2100. http://www.fao.org/news/story/en/item/35571/icode/
How
is this to be achieved? Would better redistribution of resources be
enough or do we need some kind of agicultural/technological
revolution?
/
the debate on GM (genetically modified) food and the need for another
Green Revolution or something similar but fears about agricultural
monocultures. Better information could be made available to
small-scale farmers through the
Global
Open Data for Agriculture and Nutrition
IT project.
7) Encouraging sex
education and voluntary birth control, although this is controversial
for some countries and cultures. Point out the dangers of China’s
one-child policy (female infanticide), now abandoned in favor of a
two-child policy (Oct. 2015) and India’s 1970s’ voluntary
sterilization policy (the poor are more likely to volunteer if there
are cash incentives and this is a form of discrimination).
8) More
importantly, we should promote and support female primary, secondary
school and higher education and their entrance into the work force in
countries with a rapidly rising population, since the biggest single
factors in reducing fertility rates seem to be education and the
empowerment of women.
In
the absence of successful diplomacy leading to an agreed
international approach to these problems, one could expect to see
growing competition for limited resources, conflicts resulting
directly from such competition, mass migrations and policies
regarding global challenges decided on an inadequate, ad hoc, nation
by nation basis. In such a scenario we may all end up as losers, but
those most at risk in terms of food, health and economic security and
basic living conditions will be the first victims.
https://www.eea.europa.eu/soer-2015/global/competition
https://www.theguardian.com/theguardian/2006/sep/01/guardianweekly.guardianweekly1
As
Sustainable Development Goal 17 makes clear, in order to deal with
the problems caused or made worse by population trends a global
partnership will be necessary.
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