The world's population symbolically reached 7 billion today. (Not really, but the UN decided to use a birth today to commemorate what will come in the near future.)
"Seven billion is a number we should think about deeply," he said.
"We should really focus on the question of whether there will be food, clean water, shelter, education and a decent life for every child," he said. "If the answer is 'no,' it would be better for people to look at easing this population explosion."
I remember when we hit six billion; there was this same sentiment, the sentiment expressed by Paul Ehrlich in 1970. In response to this sentiment, I remember one commentator in 1999 making the important point that "It's not that we're multiplying like rabbits, it's that we're no longer dying off like flies."
So for those lamenting the growth in the world's population, whom do you propose killing off to reduce it? Between which two countries should we instigate a war to reign in the number of people on the planet?
But things have been slowing down.
But Poston said a combination of factors led to what may be the most significant demographic shift ever.
In the industrialized West, improved methods of birth control and greater opportunities for women in the workplace and in society meant the end of 5,000 years of women generally being considered society's baby-makers.
In China, there has been aggressive enforcement of a "one-child" policy, drastically reducing population growth rates.
Worldwide, urbanization has reduced the need for large families beneficial in rural agricultural areas.
Reasons for significant growth rate declines in places like Iran, where the rate has fallen from 7.0 in 1974 to 1.9, remain more of a mystery, but Poston said they probably could be traced to cultural changes that can be very difficult to reverse.
And from what did those changes derive? What about vast changes in economic growth around the world? The adoption of market capitalism in the West since the nineteenth century? In parts of the developing world like Brazil, India, and China over the past four decades? If the argument is that we should reduce the size of families, well the best solution for that is increased economic growth. And for that, we need what the West initiated two to three centuries ago. And where is that going now?
According to the United Nations Population Fund, the seven-billionth child is most likely to be a boy born in India or China, but the trend of fertility in the longer term is in a different direction, Dudley Poston, a professor of sociology and demographics at Texas A&M University, told Reuters.
For the first time ever, the human reproduction rate is slowing, in many places slowing significantly, and the slowing growth is not only happening in Europe and Japan, he said.
"Once your fertility rates drops below two, it is very very hard to get it to go back up again," Poston told Reuters.
"We now have 75 countries in the world where the fertility rate is below two," meaning the average woman is having fewer than two children.
It seems as if some of the world's leading economies are moving in the opposite direction. Let's hope the developing world adopts market capitalist policies more rapidly than the West rejects them.
Oh yeah, here's Robert Higgs explaining the cause of that decline. (HT: Don Boudreaux)