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Population 101

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Pop 101 2.1 Kids: A Stable Population From the time of the cave men all the way until today humanity continues to exist because each generation of people has produced another generation to replace itself. Scientists have figured out how many people need to be born each generation to replace the generation before. That number is one person per person. All things being equal, this creates perfect demographic balance. Since women are the only ones who can have children, replacing every person on earth means each woman needs to have 2 children; one to replace her, and the other to replace the man, who can not have children. The total fertility rate is the average number of children each woman in a society is having. This number shows us if a society is growing or shrinking. In developed countries, the replacement rate birthrate is 2.1 children per woman. This will keep the population stable, but even that is assuming that every woman has children, and that there are no wars, famines or disease. In the real world disasters happen all the time, and, sadly, not all children reach adulthood, especially in poor countries. This pushes their replacement rate up to 3.3 children per woman. Since not every woman wants to have children, in order to keep the population stable, some women need to have more than 2.1 children, to balance the birthrate with the women who are only having 1, or no children at all. Maintaining this balance is of the utmost importance. If society does not atleast replace itself every generation, human numbers begin to fall exponentially. Economic and social problems appear, as elderly people retiring begin to outnumber young people entering the work place. This is already happening all over the developed world. Many of the world's nations are only barely replacing themselves, while a growing majority have birthrates below replacement, some as low as 1.8 or even 1.2 babies per women. Many societies are facing a very real danger: Extinction Think about it. Overpopulation is a Get the facts. Spread the word. Population Research Institute Putting people first

Video Details

Duration: 2 minutes and 11 seconds
Country: United States
Language: English
Producer: Population Research Institute, Front Royal, VA
Views: 82
Posted by: kbrekken on Sep 19, 2011

Posted by axis4peace3 on youtube:!

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