The young nations and the aging nations

world baby boom

Click to enlarge.

crudebirthrate

Click to enlarge.

I think the leveling off of population growth is a good thing.  There is a limit to how many people the earth can support.  I don’t claim to know what that limit is, but it will be passed at some point unless population growth is leveling off.

demographic transitionThe good news is that this is starting to happen.  The problem is that it is not happening in every nation at once.

Some nations have low birth rates and an aging population that is growing in relation to the working-age population.  Other nations have high birth rates and a young population who can’t all find jobs.

Should there be more immigration from the growing young nations to the static older nations?

What happens to the world balance of power when the population of some nations is static and the population of others grows?  If present trends continue, India will have a larger population than China.  Mexico could become a more populous nation than the USA.  What then?

Bertrand Russell years ago wrote that in order to achieve world peace, nations needed to limit their populations as well as limit their armies and armaments.  Is that possible?

Demographers say that a nation’s population growth starts to level off when women are emancipated enough to be able to decide whether or not to have children, and when a nation reaches a level of prosperity such that parents think their security in old age is better with a few well-educated and well-off children than with many poor children.

I hope this comes true for the whole world.  Expressing this hope is as close as I can come to answering the questions I asked.

What do you think?

LINKS

These maps show where the world’s youngest and oldest people live by Simran Khosla for Global Post.  This article is the source of the top map.  It breaks out separate maps for the world’s regions.

Demographic Indicators: Education Crisis in Developing Countries by Pearson Education Inc.  This article is the source of the bottom map and the chart.  I assume the estimated birth rates come from the United Nations or the CIA World Factbook.

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