21. World Population Growth Under Different Assumptions Concerning Fertility: 1970-2 Nixon, NSSM 200. Table 3. world population growth Under Different AssumptionsConcerning Fertility 19702075 http://www.population-security.org/ATABLE3.html

22. World Population Growth -- Data Snooping world population growth Data Snooping. In the first chapter welooked at two different kinds of change discrete change, or http://www.math.montana.edu/frankw/ccp/modeling/discrete/snooping/body.htm

World Population Growth Data Snooping In the first chapter we looked at two different kinds of change discrete change, or discrete dynamical systems and continuous change, or continuous dynamical systems. Discrete dynamical systems are very useful for three reasons. In many situations change really is discrete it occurs at well-defined time intervals. Examples of this kind of change include farm prices and the population growth of temperate zone insects. Continuous change can often be approximated very well by discrete change. Discrete change is often easier to work with and is conceptually more simple. Thus, even when a continuous model is better, a discrete model may work almost as well and may be more widely understood. Data is usually discrete rather than continuous. So even when the underlying model is continuous we may be forced to work with a discrete model because of the limitations of the available data. For these reasons we begin our systematic study of models with discrete dynamical systems. The graph at the left shows data obtained from the United States Census Bureau estimating world population in the middle of each year for the years 1950-1995.

23. World Population Growth -- Data Snooping http://www.math.montana.edu/frankw/ccp/modeling/discrete/snooping/learn.htm

24. World Population Growth world population growth © 1997 Ms Holly. In this world a majorityof many problems are caused by not having enough Not enough http://www.angelfire.com/fl/EeirensFaerieTales/WorldGrowth.html

World Population Growth 1997 Ms Holly In this world a majority of many problems are caused by not having enough...Not enough time, not enough space, not enough sleep, not enough food, not enough room, not enough of anything... If you have room for only two people to live in a small house and then they have six to seven children (as they do in poorer countries where they have extremes of poverty) often they do not have the ability to choose the number of children they will have - This country will end up being overpopulated. If there is only enough food for two people this means that those two people will have to share that food between themselves and six to seven children they bear....In these countries quite often the children starve, suffer greatly, and die....In these countries often there are great wars and plagues because there is not enough. What causes this is too many children are being born. The reason this is happening is people in these countries cannot afford to prevent all these children from being born, because they do not have the means or education to do so... We can go to bed every night with food, and shelter...because our system has provided for us to be able to choose how many children we want to have or not have. We have the things we have because we are able to choose how many children we have. But in poorer countries they cannot do that...for many do not have the benefits of good food, shelter, and and education which would help them to learn how to stop having so many children.

25. WORLD POPULATION GROWTH CHART world population growth CHART. In the year 1900 the Earth was hometo about 1.6 billion people. The total had grown by 600 million http://www.atmos.umd.edu/~owen/CHPI/IMAGES/pop.html

WORLD POPULATION GROWTH CHART In the year 1900 the Earth was home to about 1.6 billion people. The total had grown by 600 million in the 100 years since 1800, the year that the first billion was reached; but the change in the 19th century gave no hint of things to come. By the middle of the present century another billion had been added, in the remarkably short span of only 50 years. Moreover, and significantly, 80 percent of the growth had taken place in the world's poorer, or "developing," nations. In 1995, but 45 years later, world population had risen by an additional three billion, with most of the increase, as before, in Asia, Africa, and Latin America. The dramatic fashion in which new numbers have been added to the world's population since 1950 is shown in this figure. While it took the several million years of human history to reach the first billion, and 130 years to reach the second, today each new billion is added in but 11 years. It came as something of a surprise. The fact that world population would grow by billions in but a few decades was not anticipated by demographers in the initial postwar period. The earliest United Nations projections showed more concern with the possibility of devastating mortality striking the developing countries. As a result, U.N. projections made in 1951 predicted the 1980 population at anywhere from 3 to 3.6 billion, but the higher limit was considered optimistic and unlikely. The actual figure, as best we now know, proved to be about 4.4 billion: a large difference in a less than 30 year projection.

26. Forecasts Show Slowing World Population Growth Forecasts Show Slowing world population growth Population Change page 154. Whileworld population growth is continuing, it will slow in many countries. http://www.longman.com.au/atlas/compweb/bn/bn-2001-3/bn-grow.htm

Forecasts Show Slowing World Population Growth Population Change: page 154 Birth Rates: page 155 Death Rates: page 155 Forecasting the world's population for the next one hundred years is almost impossible because of things we can't be certain about. However, demographers have developed an approach that addresses some of the uncertainty. They now calculate the probability or chance of certain events or trends actually happening. Recent research by the International Institute for Applied Systems Analysis says that there is an 85 per cent chance that the world's population will reach a high of 9 billion people by 2070, and then will decline slowly by 2100. IIASA's estimates are: Table 1 A declining world population means a much older population. The proportion of people older than 60 years of age is likely to increase from: Table 2 The most extreme aging of the population by 2100 will occur in: Table 3 compared with regions such as: Table 4 where the population will be much younger. This doesn't mean that the world's population problems are over. Total world population numbers are only one aspect of the problem. In some of the world's poorest regions with the worst human problems population will continue to grow. For example: Table 5 The forecasts do indicate that efforts to slow population growth by reducing birth rates is starting to have an impact. For example, in China, the population in 2000 was 1.4 billion, and is anticipated to fall to 1.25 billion in 2100.

27. World Population Growth Conference In Zurich European Rotaract Information Center. WorldPopulation Growth Conference in Zurich. http://www.rotaract-eric.org/info/maintext.php3?ID=715

28. India, Africa Keys To World Population Growth - 6/8/2000 - ENN News - Environmen India, Africa keys to world population growth Thursday, June 8, 2000By Associated Press It has taken thousands of years for the http://www.enn.com/news/wire-stories/2000/06/06082000/ap_indiapop_13716.asp

Site Index: Home News ENN Earthnews Affiliates News In-Depth Topics Interact Online Quizzes Postcards Marketplace Advanced Search Advertise Join ENN e-mail Subscription Take our Survey Affiliate Tech Center Post Press Release Help About ENN Site Map India, Africa keys to world population growth Thursday, June 8, 2000 By Associated Press It has taken thousands of years for the population of India to swell to 1 billion. It may take just 100 years for India to add another billion. How successful the Indian government is in boosting literacy rates and sexual education among females in the next several decades will be critical in determining just how quickly the population there increases, the author of a new report on world population says. Currently, India is home to one-sixth of the world's 6 billion people. By mid-century, India's population could reach 1.6 billion people, helping to swell the world population to 9 billion, according to the report by the Population Reference Bureau scheduled for release Thursday. By 2050, India could surpass China as the country with the world's largest population, said Carl Haub, one of the report's authors. The bureau is a Washington-based private, nonprofit research group.

29. NSSM 200 World Population Growth Under Different Assumptions Table 2. world population growth Under DifferentAssumptions Concerning Fertility 19702075 http://www.africa2000.com/SNDX/TABLE2.html

30. World Population Growth World population has been growing geometrically or exponentially.Such growth, when graphed, yields a J shaped curve. Numbers http://www1.sru.edu/gge/faculty/hughes/100/100-3/d-3-2.htm

World population has been growing geometrically or exponentially. Such growth, when graphed, yields a "J" shaped curve. Numbers double and double again, soon yielding enormous totals. In 2000 the population of the world is just over 6 billion persons and growing. The Population Reference Bureau predicts a world population of 7 billion in 2013, 8 billion in 2028, and 9 billion by 2054. Note that total numbers continue to increase dramatically. This is in spite of a decrease in the percentage rate of increase. Numbers of additional people that are added to the world's population annually are also expected to decrease in the future. Go Back to List Go to SRU Main Page Send Comments Last Revised: May 19, 2000

31. World Population Growth Per Year World population has been growing geometrically or exponentially.Nevertheless, the absolute number of additional people added to http://www1.sru.edu/gge/faculty/hughes/100/100-3/d-3-2b.htm

World population has been growing geometrically or exponentially. Nevertheless, the absolute number of additional people added to the world's population each year has declined, and is expected to continue to do so in the future. Go Back to List Go to SRU Main Page Send Comments Last Revised: May 19, 2000

32. World Population Growth E11 World Population Links. US Census Bureau, International Programs Center.World population clock, updated continuously by US Census Bureau. http://patzek.berkeley.edu/E11/worldpopulation.htm

E11: World Population Links US Census Bureau, International Programs Center World population clock , updated continuously by US Census Bureau World Population Profile 1996 Contains links to many US Census Bureau reports in Adobe PDF form Historical Estimates of World Population World Population 1950-2050 Population Pyramids for all countries on Earth Making Population Projections Plots of World Population US Population , projections

33. The University Exchange - FOCUS: Global Intelligence world population growth. 0 THE WORLD POPULATION HAS DOUBLED IN THE PAST40 YEARS. Based on the present rate of population growth. One http://www.edu.ue-foundation.org/worldpop.html

WORLD POPULATION GROWTH AD 300 Millionen AD 300 Million 1,750 AD 800 Million (increasing @ 1/10 of 1% per annum) 1,800 AD 1. Billion 1,930 AD 2. Billion 1,960 AD 3. Billion (increasing at over 2% per annum) 1,974 AD 4. Billion 1.987 AD 5. Billion 2,000 AD 6. Billion (presently increasing by over 90 million per annum) THE WORLD POPULATION HAS DOUBLED IN THE PAST 40 YEARS. Based on the present rate of population growth. One could conservatively predict the population to be by the year: 2,050 AD 12 Milliarden ? 2,050 AD 12 Billion ? 2,100 AD 24 Billion ? 2,150 AD 48 Billion ? 2,200 AD 96 Billion ? 2,250 AD 192 Billion ? 2,300 AD 384 Billion ? PRESENT WORLD POPULATION As of the Date and Time shown above, increasing at 92 million plus per Annum At this rate the Total World Population of AD, is reached every 3 Years. In the last 200 years we have caused more damage and destruction on this planet than in the previous 7 thousand years. Countless species of animals and insects becoming extinct, thousands of species last year alone, and millions of hectors of rain-forests. If we continue at the present rate of destruction / consumption, the years 2100 and beyond look very bleak indeed. Even if we take the very optimistic view that the world population will stabilize at 12 billion within the next 100 years. The USA with under 300 million inhabitants out of a total of 6 billion, (about 5% presently), consumes 75% of the total annual world produce and energy and produces 20% of the world pollutants. This is 1/20 of the world population consuming 3/4 of the world output and producing 1/5 of the pollution. Developing countries in Asia such as China and Indonesia feel they have an equal right as humans, to live in the same manner as persons in the USA and are working very hard to achieve this goal. Within 20 years, India, Latin America, Eastern European, and African countries will no doubt follow them.

34. World Population Growth display created by Ed Stephan http://www.ac.wwu.edu/~stephan/webstuff/demographs/growth.html

display created by Ed Stephan

35. World Population Growth world population growth, 17502150. Source United Nations, World Population Prospects;The 1998 Revision; and estimates by the Population Reference Bureau. http://www.columbia.edu/~lbw52/world population.htm

World Population Growth, 1750-2150 Source: United Nations, World Population Prospects ; The 1998 Revision; and estimates by the Population Reference Bureau. Population Growth

36. Projected World Population Growth http://mars3.gps.caltech.edu/whichworld/tour/poptrends.html

37. Keyfitz, Nathan: World Population Growth And Aging Keyfitz, Nathan world population growth and Aging, university pressbooks, shopping cart, new release notification. http://www.press.uchicago.edu/cgi-bin/hfs.cgi/00/7127.ctl

Go to ... Full text search Excerpts Subject catalogs Subject index ... Shopping cart contents or Print an order form Keyfitz, Nathan and Wilhelm Flieger World Population Growth and Aging Demographic Trends in the Late Twentieth Century . viii, 608 p., 800 line drawings, graphs, and maps. 8-1/2 x 11 1990 LC: 90011015 Class: HA155 Cloth $83.00tx 0-226-43237-8 Fall 1990 Subjects: Sociology: Demography and Human Ecology Geography: Social and Political Geography Economics and Business: EconomicsInternational and Comparative Economics and Business: EconomicsDevelopment, Growth, Planning The University of Chicago Press You may purchase this title at these fine bookstores . Outside the USA, consult our international information page File last modified on 4/02/2003. Questions about this title? email sales@press.uchicago.edu Email questions about books or availability to sales@press.uchicago.edu or questions about order status to custserv@press.uchicago.edu . Click here here

38. World Population: 6 Billion. GRID-Arendal News. world population growth is one of the most important ecological problems facingthe planet today . Message from Klaus Toepfer, executive Director, UNEP. http://www.grida.no/inf/news/news99/news139.htm

Back to News 1999 UNEP News Release. For use as information only. Not an official record "World population growth is one of the most important ecological problems facing the planet today" Message from Klaus Toepfer, executive Director, UNEP NAIROBI, 14 October 1999 - "The birth of a baby in Sarajevo this week signalled a symbolically critical moment in human history. With the birth of this child, the world population touched the six billion mark. The world in which this child was born, like many other babies in other parts of the world born around the same time, is a world characterized by increasing stresses on the basis of our existence - our environment. Some of the most convincing proof of this is in the Global Environment Outlook report (GEO-2000), launched by the United Nations Environment Programme (UNEP) a few weeks ago. The report also delineates the linkages between population growth through its impact on the economy, the environment and safety and health, and the habitability of the world our children will inhabit. GEO-2000, shows that almost half of these six billion people will live in urban areas. And, although rates of urban growth are slowing down, we are still adding 60 million more people to cities every year. The effects of population growth can also be seen in the number of motor vehicles which have risen from 40 million to 680 million.

39. World Population Growth world population growth Simulation. Animation on the history of humangrowth Quick time movie version 1.0. The simulation begins http://www.meteor.iastate.edu/gccourse/issues/pop/growth.html

World Population Growth Simulation Animation on the history of human growth Quick time movie version 1.0 . The simulation begins at 7 A.D. and continues until 2050. Yellow dots on the world map represent 1,000,000 people. The movie will automatically begin and will continue to play until you close the window. (5.3 MB - This may take a little time to load.) Approximately 4:19 Other activities will be included as they are developed.

40. PAI: Resources: FactSheets: Why Population Matters To Natural Resources and services they need to put these ambitions into effect is all that can be done,and all that needs to be done, to end world population growth in the new http://www.populationaction.org/resources/factsheets/factsheet_13.htm

Resources Fact Sheets Current Publications Publications Library ... Links WHY POPULATION MATTERS TO NATURAL RESOURCES Despite humanity's success in feeding a growing world population, the natural resources on which life depends-fresh water, cropland, fisheries and forests-are increasingly depleted or strained. One hopeful sign for the new millennium is that population growth is slowing at a much faster rate than was previously predicted. While slowing, however, significant growth continues, meaning that more people will be sharing such finite resources as fresh water and cropland. Population and Environment Having reached nearly 6.1 billion in 2000, human population continues to grow. Water Currently, 434 million people face either water stress or scarcity. Cropland The number of people living in countries where cultivated land is critically scarce is projected to increase to between 600 million and 986 million in 2025. Despite the Green Revolution and other technological advances, agriculture experts continue to debate how long crop yields will keep up with population growth. The food that feeds the future will be raised mostly on today 's cropland. The soil on this land must remain fertile to keep food production secure. The minimum amount of land needed to supply a vegetarian diet for one person without any use of artificial chemical inputs or loss of soil and soil nutrients is .07 hectares, or slightly less than a quarter of an acre. An estimated 415 million people already live today in countries that have less than that per person. Easing world hunger could become unimaginably difficult if population growth resembles demographers 'higher projections.

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