The Royal Society has announced that it is launching a major study into human population growth and how it may affect social and economic development in coming decades. It commenced on World Population Day and concludes sometime in early 2012.
http://www.bbc.co.uk/news/10578484
http://www.newscientist.com/article/...on-growth.html
When it eventually comes out it will be interesting to see how they pitch the tone of the report, as this is a very contentious issue. On the one hand being able to procreate, however much you do so, is seen as an inalienable right and yet on the other doing so impinges on the rights of others as your “gene stock” consumes disproportionately more resources. There is also the economic question as “growth” ultimately relies on an increasing population, set against which are environmental issues such as deforestation, pollution and dwindling resources.
To me, and a growing number of naturalists and scientists, the answer is blindingly obvious; if we carry on as we are then all that awaits us is disaster, probably in the form of the apocryphal four horsemen.
Using 2050 as a reference point as it features in the latest predictions, the world’s population will reach a staggering 8 Billion people. To put this in perspective the equivalent amount for 1930 was 2 Billion, and not long after that we had the Second World War which put a significant dent in this figure. Therefore in 120 years we will add three times the amount of people to the world that it previously took over 5000 years to achieve. So, if you will excuse the pun, how on earth can we believe that this is good for our species in the long run?
If you look at the figures for the UK then our total population is predicted to increase to around the 70 million mark. Now our infrastructure and society is already creaking under the weight of 60 million, so how are we going to integrate another 10 million? The cost of services such as the NHS will increase markedly in response to this rise in population, as economy of scale ceases to be effective beyond a certain point. Then there is the issue of housing, as we are already building on land which is either unsuitable (flood plains) or we should be preserving as farmland or natural habitats. More critically however we are predicted to have energy and water shortfalls in the future at our current population, let alone for this higher level.
Scarily the last report I read relating to a “sustainable” UK population level put the estimate at 20-30 Million, and although commissioned by Friends of the Earth it was rather generous in some of its predictions regarding the availability of renewable energy and other factors. More tellingly it is entirely possible that without some significant advances in the science of sustainable agriculture, specifically replacements for fertilisers and pesticides, in the long term this figure could be nearer 8-10 million. So rather than letting our population increase we should be finding ways to slowly reduce it over time, in order to ensure that future generations also enjoy a reasonable standard of living.
The problem is that we don’t really have any idea about the scale of the challenge, only that at some point we will have to find away to only consume resources at a rate at which they can be replaced, or they will run out. Obviously the amount of resources required will be dependant on the size of the population, but without an accurate idea of how well we will be able to replenish them it is difficult to then calculate an upper limit. In addition, until we stop using them at a faster rate than they are renewed then we will have no idea of the final amount of resources we will have at our disposal. About the only thing we do know is that until we find replacements for fossil fuels, especially oil, our entire civilisation is on borrowed time.
Now some of you may be thinking that there is nothing to worry about and that we will be able to use technology to dig ourselves out of this hole. However, the longer it takes us to start tackling the associated problems, and at the moment there is minimal effort being made to solve them, the greater the likelihood that change will be foisted upon us in a rather unpleasant fashion. Yes there are significant efforts around energy production and alternatives to petroleum for transport, but what about everything else? If you look at the number of products dependant on oil it is pretty much ubiquitous, affecting every facet of our lives. Even just a cursory examination gives a list http://www.anwr.org/features/oiluses.htm that should give pause for thought. Ultimately though it is food which is the biggest global concern as modern farming, food manufacture and distribution currently could not function without it. But even this is a minor worry for some areas compared to the more pressing issue of water. I believe it is Mexico City where despite being in the top 10 richest cities in the world, upwards of 10% of the population in permanent housing, i.e. not shanty towns, are on rationed water delivered by trucks. There is also the inevitable fact that no matter what we do the amount of non-organic resources available to us are finite, and thus are not something we can ultimately rely on.
Despite this my main concern doesn’t actually relate to the issue itself, but moreover the fact that at present people are becoming increasing cynical about anything which has a negative impact on their quality of life. You only have to look at the response to the various forms of carbon taxation to realise that we see such things as just another way for those in power to siphon off our hard earned cash. I also think that the man made climate change lobby are actually doing more harm than good to the cause of continuing human survival. In reality it doesn’t matter whether it is our fault or not, as the climate changes with or without our help, and has done so more dramatically in the past. We as a species just have to learn to adapt the changes and live more in tune with our natural surroundings rather than trying to bend it to our will. The far bigger issue is that if we just continue to consume resources at an increasing rate we will fast find ourselves without any, and will be far less able to adapt to climate changes. In addition, the larger our population the harder it becomes to relocate people into habitable regions.
However, as we have to consume increasing amounts of resources in order to have economic growth, and as it is our new “deity” it will take something drastic to shake us out of our torpor and wake us up to the reality of our situation. Personally I don’t think that we will change until it is far too late, and millions if not billions of people are dying through war, famine and pestilence. We as a species learn from our mistakes rather than being smart enough to avoid them in the first place. Admittedly there is an argument to say that the best course of action is for us to just “live fast and die young” as the quicker our society collapses back to a pastoral level of existence the less the total amount of damage we will do to the planet. But that is easy for us to say as we won’t be the ones that have to deal with the consequences…
So the question remains, how do we solve the problem of overpopulation? In addition, how on earth do we create a unified global approach to it as quite a number of countries will refuse to co-operate for one reason or another.