Br Cornelius, on 17 November 2012 - 08:56 AM, said:
We are currently undergoing the 7th great extinction. This is the first anthropogenic extinction. Once a species goes extinct - it never comes back and will take millions of years to be replaced through evolution. Most of the damage is occuring in the poor countries where population is still growing, but even in the developed world biodiversity has declined by 40% in the last 30years. We depend on biodiversity for our air, water and soil. We cannot ignore the consequences of population and it would take centuries/millenia to drop back to sustainable levels of population.
Br Cornelius
Why do you think this? The earth's population could be reduced by half in two generations, if current falls in fertility rates continue. If every woman has only one child, then the next generation will be half the numbers of its parent's generation, and the next generation will be only a quarter of its grandparents. That figure is already being approached in parts of the world.
Given present trends and numbers, once fertility levels fall below replacement levels, it will only take two generations for numbers to fall very dramatically, once the older generation dies off. So, by the end of this century, the worlds pop could well be less than it is now and in rapid decline.
However, it is not about the numbers but about the resource use and ecological footprint of individuals. I 'consume", or require for my sustenance as an australian, 2 and a half hectares of the earth's surface. In the third world it is a few square metres per person. It is this inequality which is unsustainable. We can't afford the throw away, wasteful, consumer society of the west.
Humans have the technological abilty to restore both biodiversity and habitat to the earth, once we control population and consumption to sustainable levels. However, while we could reintroduce wooly mamoths dodos and tasmanian tigers to the earth, I am not sure that would be a wise move. Probably halting decline in, and mimimallly improving, the biodiversity might be safer and more feasible, at least to begin with.
Edited by Mr Walker, 17 November 2012 - 10:35 AM.
You are a child of the universe, no less than the trees and the stars; you have a right to be here. And whether or not it is clear to you, no doubt the universe is unfolding as it should.
Therefore be at peace with God, whatever you conceive Him to be, and whatever your labors and aspirations, in the noisy confusion of life keep peace with your soul.
With all its sham, drudgery and broken dreams, it is still a beautiful world..
Be cheerful.
Strive to be happy.