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Why Might the World Face an Overpopulation Problem?

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Presentation on theme: "Why Might the World Face an Overpopulation Problem?"— Presentation transcript:

1 Why Might the World Face an Overpopulation Problem?

2 * Thomas Malthus claimed the population was growing faster than the food supply * Malthus wrote An Essay on the Principle of Population

3 * Contemporary geographers believe Malthus’ theory is more frightening than first suspected. * More countries have entered Stage 2 of demographic transition – high birth rates * There has not been an increase in wealth in these countries making some countries worse off today * Growing population will put a strain on other resources beyond food. * What problems could arise from resource scarcity?

4 * New technology can offset scarcity of minerals and land by increasing efficiency * A larger population could stimulate economic growth and therefore production of more food * Marxists believe that population growth is not the root of poverty, hunger and social welfare problems, economic inequality is

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6 * Economic development – women who are able to attend school and remain in school longer are more likely to gain economic control over their lives * Distribution of contraceptives

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8 * Epidemiological transistion * Epidemiology – branch of medical science concerned with the incidence, distribution and control of diseases that affect large numbers of people

9 * Stage 1 – infiectious and parasitic diseases were the principal causes of deaths * Also called the stage of pestilence and famine * The Black Plague * Stage 2 – improved sanitation, nutrition and medicine spread during the Industrial Revolution and reduced the spread of infectious disease * Also called the stage of receding pandemics * Cholera

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11 * Stage 3 – characterized by a decrease in deaths from infectious disease, but an increase in chronic disorders * Known as the stage of degenerative and human created diseases * Cardiovascular disease and certain forms of cancer * Stage 4 – characterized by people living longer with degenerative diseases due to medical advancements * Known as the stage of delayed degenerative diseases

12 * Reemergence of infectious and parasitic disease * This can be attributed to three possible factors * Evolution of disease microbes * Malaria * Poverty * Tuberculosis * Improved travel * Avian flu

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