MCDB 150 - Global Problems of Population Growth

Lecture 12 - Human and Environmental Impacts. Until recently, the world population has been growing faster than exponentially. Although the growth rate has slowed somewhat, there are about 80 million more people each year and about 3 billion more will be added by 2050 (a 50% increase). Population will probably increase more beyond that. Such growth is unprecedented and we cannot predict its long-term effects. The environmental impact of this population increase is bound to be astronomic. Large populations engender two problems: over-consumption in the rich countries which leads to environmental misery, and under-consumption in the poor countries which leads to human misery. People living in abject poverty ($1 per day) don't limit their fertility. Factory jobs in poor countries pay double that, approximately $2 per day. For population to stabilize, income must rise. If population is to increase by 50%, income needs to double - we are looking at a tripling of the world economy. The environment is currently overstressed. Can it survive a tripling of the economy? (from

Lecture 12 - Human and Environmental Impacts

Time Lecture Chapters
[00:00:00] 1. Introduction
[00:13:47] 2. Population Explosion
[00:28:44] 3. Population and Over Consumption
[00:38:58] 4. Population and Poverty in the Developing World
[00:51:25] 5. Changes in Poverty Levels
[01:06:02] 6. Conclusion

Lecture 12 - Human and Environmental Impacts
Instructor: Robert Wyman. Resources: Notes - Lecture 12 [pdf]. Transcript [html]. Audio [mp3]. Download Video [mov].

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Lecture 01 - Evolution of Sex and Reproductive Strategies
Lecture 02 - Sex and Violence Among the Apes
Lecture 03 - From Ape to Human
Lecture 04 - When Humans Were Scarce
Lecture 05 - Why Is Africa Different?
Lecture 06 - Malthusian Times
Lecture 07 - Demographic Transition in Europe; Mortality Decline
Lecture 08 - Demographic Transition in Europe; Fertility Decline
Lecture 09 - Demographic Transition in Europe
Lecture 10 - Quantitative Aspects
Lecture 11 - Low Fertility in Developed Countries
Lecture 12 - Human and Environmental Impacts
Lecture 13 - Fertility Attitudes and Practices
Lecture 14 - Demographic Transition in Developing Countries
Lecture 15 - Female Disadvantage
Lecture 16 - Population in Traditional China
Lecture 17 - Population in Modern China
Lecture 18 - Economic Impact of Population Growth
Lecture 19 - Economic Motivations for Fertility
Lecture 20 - Teen Sexuality and Teen Pregnancy
Lecture 21 - Global Demography of Abortion
Lecture 22 - Media and the Fertility Transition in Developing Countries
Lecture 23 - Biology and History of Abortion
Lecture 24 - Population and the Environment