Our politicians do not like to speak about overpopulation out of fear for the pious who believe that human beings ought to multiply. Left-wing ideologues argue that there is no such thing and that every apparent problem can be solved through a more equal distribution of resources. Enlightened progressivists are confident that there will be a technological fix. Economists tell us that we need continuous growth and hence more consumers. And the statisticians are confident that the growth of the human population will eventually slow down. We are, in reality, already bursting at the seams; numerous ecological problems are due to the fact that there are already so many of us. We need to think harder about the problem, something we find hard to do. We need to consider what the size of the human population should ideally be? And if we are already overloaded, we must also ask how we can reduce the size of the population in a humane way. We need to ask what obligations we have to coming generations.
Last June a United Nations report predicted that the world's population - now at 7.6 billion - was likely to increase to almost 10 billion by 2050 and to 11.2 billion by 2100. Now a Vienna based group of demographers have calculated that by 2070 the world's population will reach ONLY 9.5 billion. This has been hailed as good news.
There is much debate about climate change, but changes to our environment are nor limited to the weather.