I think overpopulation is a silly and simplistic explanation of the world’s problems, hysterical at best and damaging when it inspires public policy. I don’t deny that it can cause problems when we look at local areas: there can be too many people in a certain area compared to the locally available stocks of food and water. But the problems there aren’t caused by “overpopulation” but by inadequate distribution of goods, wasteful use of goods etc. But if you think all this is BS, do go and read my previous posts for a more thoughtful discussion of the issues.
How is overpopulation a human rights issue? Well, if you believe overpopulation is a problem, you will probably have some of the following reasons for your beliefs:
- Overpopulation may cause poverty, hunger and water shortages. And poverty, hunger and water are human rights issues.
- Overpopulation may cause violence and war. No need to argue the link with human rights I believe.
- Overpopulation may cause refugee flows. Immigration can cause a wide variety of human rights issues, going from xenophobia and discrimination to poverty and exclusion.
Personally, I think that all of those problems are real, but that they have other more important causes. Take food shortages for instance:
[F]ood availability can be significantly increased, at minimal cost, by simply reducing agricultural waste … As an engineer, I regularly travel to sort out post-harvest problems and I am convinced that there is little benefit to be gained from merely increasing farm production without making considerable improvements to post-harvest systems and facilities.
The majority of grain and vegetable stores in east Europe date back to the 1930s, in design if not in construction, and they are truly and hopelessly insufficient, amounting to losses of some 15m-25m tonnes of grain annually. India loses 40m tonnes of fruits and vegetables as well as 21m tonnes of wheat a year because of inadequate storage and distribution. To put that in perspective, India’s wheat wastage each year is almost equal to Australia’s entire production of wheat.
In South-East Asia 37% of rice is lost between field and table; in China the figure is up to 45% and in Vietnam it can be as high as 80%. This loss of 150m tonnes of rice each year represents a waste of resources on a truly massive and unsustainable scale.
In America and Britain the buying habits of the big supermarkets actually encourage waste. They impose draconian penalties on suppliers for failing to deliver agreed quantities of fresh fruits and vegetables during the year, which force farmers to grow a much bigger crop than they need as a form of insurance against poor weather and other factors that may reduce their yield.
Even worse, 30% of what is harvested never reaches the supermarket shelf owing to trimming, quality selection, etc. Of the food that does reach the supermarket, up to half is thrown away by the consumer. David Williams (source)
Overpopulation isn’t the cause of food shortages, and population control measures, such as sterilization, offspring limitation etc. aren’t the solutions. And if you don’t believe me, read the work of Amartya Sen on the link (or better the absence of a link) between food supplies, population and famines (see also here):
Amartya Sen convincingly refuted the claim that either food supply or population had anything to do with famine. Famines regularly occurred at times and places where food was plentiful, and in the most thinly populated places, like Darfur. Nick Cullather (source)