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By Bruce Barbour

Welcome to the Green Oversite info web.

There is general agreement within the scientific community that global warming is occurring and its cause is due in large part to human activities, predominantly the burning of fossil fuels. Even most politicians concede that it is occurring. With this general consensus you would think that putting policy and practices into place to address the issue would be uncontroversial. However this is not the case. There are a number of reasons for this:

  • powerful vested interests in maintaining the status quo for as long as possible;

  • the effects of climate change cannot readily be seen in your day to day life. You can't readily feel a 0.8 degree global warming in your day to day life, nor see the relatively small changes in sea level already occurred. I went for a bush walk the other day - beautiful blue sky, birds chirping etc. The environment does not appear on the surface to be in a state of disastrous decline. There are news stories of drought and increased storm frequency and intensity and of unseasonal melting of glaciers and ice sheets but if they are not happening to you and you can't see them directly it can seem a bit unreal. Yet the vast majority of the scientific community is saying that if allowed to go on disastrous decline is what we will get - we need to take their warnings seriously and act now. By the time the disaster is readily apparent it will be too late. There are a number of issues - there is a lag between the carbon pollution and the environmental effect - the Earth is a massive system and it takes years for changes to occur so while there is a 0.8 degree world wide temperature increase at present. even if we stopped all pollution now further warming would occur. The other problem is that the climate change may well be non linear - there may be "tipping points" beyond which larger scale change could occur which would increase warming significantly from what we have at present. If these tipping points are exceeded then run away climate change effects could be anticipated and short term recovery probably impossible. The other issue is that some of the claims of sea level change seem hard to believe. For example a seven meter sea rise if the Greenland ice sheet melts seem incredible - the world's oceans seems so large and while Greenland is large it is nowhere near the size of the oceans. And if the Antarctic ice shelf melt we will be looking at a 25m sea level rise or more. It all seems unbelievable until you realise that the ocean has been this high and higher in the past - if it has happened before (for different, non anthroprogenic, reasons) it can happen again;

  • in additional to this even though some might acknowledge that warming is occurring there may be a lack of concern about the severity of the consequences of global warming: Some may think "just a few degrees hotter, more storms, some islands flooded and refugees are a small price to pay for our way of life". This is a dreadful, even unethical, attitude - even a few degrees may have dire consequences. It could be a lot worse than "just a few degrees". Low lying areas of densely populated countries could flood, ecosystems disrupted leading to mass extinctions, and water availability and food production threatened. War is possible - people and governments are not going to starve in silence. To proceed along the route leading to global warming is playing dice with our life support system, the earth's environment, only worse. If we stuff it up we could be at a stage where we couldn't go back. In the life and death issues of our environment it is much better to adopt the precautionary principle;

  • the Australian and other democratic political process does not encourage the adoption of a long term view. Some required reform will hit the hip pocket or require lifestyle changes. The benefits may not be able to be seen for decades, if they can be seen at all. When a politician can only see to the next election, a few years away, there is not much incentive to implement what may in the short term be unpopular policies whose effects are decades away.

A lot of changes can and should be done in response to this crisis. It is a matter of priorities. When a politician says some environmental policy initiative is too expensive what they are really saying is that in their opinion there is some other action which they believe has higher priority and therefore deserves the funding more than the environmental initiative. If Australia decided that global warming was one of the highest, if not the highest priority, funding would be found. It is a matter of getting that decision made - the priority increased. It would not break Australia's economy - nowhere near - and even if it did it is a price we would have to bear.

The community needs understanding of the significance of the problems, from which will come the will to tackle this most significant issue of our time, global warming. If there is the will the resources necessary to carry out the required works and to make the necessary lifestyle changes will be made available. The cost may be significant but, I suggest, significantly less than the cost of doing nothing and accepting the consequences of global warming.

I hope you will enjoy reading the contents of this site where I make further commentary and suggest some partial solutions. Please access the pages off the side bar at the top of this page and elsewhere on this site.




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