Inspired by the sad plight of the people of Niger, letters today in two major U.S. newspapers — the New York Times  and the Christian Science Monitor  — repeat the age-old myth that poverty is caused by over-population.
Let’s look at just a few facts.
Niger’s population density is 9 people per square kilometer. Compare this figure to the population densities of much more prosperous countries:
France: 110 people per sq. km.
Czech Republic: 133
United Kingdom: 250
South Korea: 493
Hong Kong: 6641
Now let’s cheat big-time in favor of the overpopulation hypothesis by counting as relevant only Niger’s arable land. If all Nigeriens lived only on Niger’s arable land, the population density of this land would be 260 persons per square kilometer — much denser than 9 persons per sq. km., but nowhere close to the population density (counting all the square kilometers, arable or not) of the likes of the Netherlands, South Korea, and Hong Kong.
(All facts reported above are calculated from data available at the CIA’s World Factbook  site.)
Where’s the evidence for the apparently indestructible belief that over-population is a fundamental ’cause’ of poverty?
The world needs more scholars of the likes of Julian Simon .