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Nobody will deny that we are only having a small effect at the moment, so your view is with the mainstream there.
The problem comes when we look at the future effects of continuing as we are. And this depends on models and projections which are notoriously inaccurate. But one thing that keeps cropping up from these models is that if we continue as we are, the rate of change will be faster than if Mother nature was left alone.
Now some of these models show our effect will continue to be negligible. Some show a dramatic effect, some are in between.
But they nearly all seem to show a positive effect from human activity. So, its a fair bet that we are having an effect and that effect will become more pronounced.
So, do we gamble on 'No effect' or 'slight effect' and save money and do nothing?
Economically that is the easy way. But if the bet is the wrong way?
If we do nothing and the effects are actually quite dramatic, humanity may well suffer disastrously. The bread baskets of the world become dust-bowls, movement of billions of people desperate to find food and security etc etc causing international 'security' issues. Dream up your own scenario.
So, perhaps the best bet it to start to do something now. Let's face it, we are going to have to address energy issues anyway. Peak Oil, the rise of eastern economies taking a bigger share of diminishing resources etc.
Changing climate (but not knowing how rapid the change is) will also have to be addressed. Prepare now, by developing higher yield food that use less water, and is more tolerant to a wide variety of climates etc etc. These all take time and will have to be done, one way or another.
Its like saving for retirement. Start early and you only have to put aside a relatively small amount each year. Leave it late and you will have years of much higher contributions that hurt more.
So with Climate Change. Start now and keep the costs negligible would appear to be the most sensible way. Well, to me anyway. |
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