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WORLD POPULATION HITS 7 BILLION

In Uncategorized on October 31, 2011 at 9:47 am

The U.N. estimates that the world’s population will pass the 7 billion mark
on Monday.

Much of that growth has happened in Asia — in India and China. Those two
countries have been among the world’s most populous for centuries. But a
demographic shift is taking place as the countries have modernized and lowered
their fertility rates. Now, the biggest growth is taking place in sub-Saharan
Africa.

Due in part to that region’s extreme poverty, infant mortality rates are high
and access to family planning is low. The result is high birth rates and a
booming population of 900 million — a number that could triple by the end of the
century. Population expert Joel Cohen points out that, in 1950, there were
nearly three times as many Europeans as sub-Saharan Africans. If U.N. estimates
are correct, there will be nearly five sub-Saharan Africans for every European
by 2100.

As NPR’s Adam Cole reports, it was just over two centuries ago that the
global population was 1 billion — in 1804. But better medicine and improved
agriculture resulted in higher life expectancy for children, dramatically
increasing the world population, especially in the West.

As higher standards of living and better health care are reaching more parts
of the world, the rates of fertility — and population growth — have started to
slow down, though the population will continue to grow for the foreseeable
future.

U.N. forecasts suggest the world population could hit a peak of 10.1 billion
by 2100 before beginning to decline. But exact numbers are hard to come by —
just small variations in fertility rates could mean a population of 15 billion
by the end of the century.

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