Chapter 3: Population Key Issue 4: Why might the world face an overpopulation problem?
Why Might the World Face an Overpopulation Problem? C2S8.
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Transcript of Why Might the World Face an Overpopulation Problem? C2S8.
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Why Might the World Face an Overpopulation Problem?
C2S8
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Why does global population growth matter?
Starvation, War, Lower Quality of Life
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Malthus on Overpopulation
• English economist Thomas Malthus was first to argue rate of population increase outrunning food supplies.
• Population increases geometrically
• Food supply increases arithmetically
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Contemporary Neo-Malthusians
• Today: 1) poor countries have the fastest growth rate because diffusion of medical/ food but not wealth. Result = larger gap between population & resources
• 2) today: shortages expand beyond food but now energy/ water/ pollution/ etc
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Malthus’s Critics• Human & Environment are
“unfixed” (according to environmental determinist)
• VIEW 1: more population = more economic growth/ more jobs/ improved technology/ quality of life improves
• VIEW 2: no cause & effect btw pop growth & economic development. Poverty & hunger result from unjust social and economic institutions.
• What are your views on population & economic growth? (Write a personal statement)
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Malthus’s Theory & Reality
• Conditions today do not reflect Malthus’s theory.
• Food production increases at a faster rate than population. Why?
• Hunger that exsists has to do with capital, distribution, and access
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Declining Birth Rates
• Globally the CBR has been declining rapidly from 27 to 21. Why?
• Emphasis on economic development, women’s edu, & distribution of contraceptive
• Use of contraceptives in LCD’s (Subsahara Africa < 25%, Asia/Latin America > 70%
• High birth rates are influenced by economics, education, and religion. Which religion do you think is least opposed to promoting condoms?
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World Health Threats
• Epidemiology, branch of med science… concerned w/ the incidence, distribution, and control of diseases that are prevalent w/ pop.
• Epidemiologic Transition: focus on distinctive causes of death in each stage of Dem. Transition
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Epidemiologic Transition S1 S2
• STAGE 1) Stage of pestilence and famine, accidents, attacks by animals, and other humans (Black Plague) <30
• STAGE 2) receding pandemics (disease that occurs over a wide geographic area & affects high % of pop) 30-50
• Diseases rapidly spreads in urban area (London Cholera 1942 case)
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Epidemiologic Transition S3 & S4
• Stage 3: degenerative and human created diseases (cardiovascular and heart) 50-70
• Case of polio & measles• Stage 4: stage of
delayed degenerative diseases (extended medical advances, edu towards diet, tobacco, alcohol, exercise)>70
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Epidemiologic Transition Possible Stage 5
• Theory argues S5 is reemergence of infectious and parasitic diseases. Why?
• Evolution of microbes to resist drugs/ insecticides (malaria once eradicated)
• Poverty: inability to pay treatment
• Improved Travel makes it easier for diseases to spread like never before
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• Where is the World’s population distributed?• Where has the World’s population increased?• Why is population increasing at different
rates?• Why might the world face an over population
problem?
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THE END… QUIZ FOR C2K3K4 THURSDAY & FRIDAY