Quote:
Originally Posted by William Djubin
The Admin Davis suggested that I should share this video regarding
"How it Ends", the risk management factors associated with Global Climate Change.
http://www.youtube.com/v/mF_anaVcCXg
I think this video should be shown to students and CEO's the like.
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This is sound thinking.
You don't need to be certain that it is the greenhouse effect that is warming the world. (Although, it is known that the greenhouse effect does warm the world, and it is known that greenhouse gas concentrations are increasing because of human activity, so you have to be somewhat mentally entrenched to not at least acknowledge the probability). There are high cost, high casualty consequences in the pipe line, and so we need to avoid them with the same intelligence that we buy house insurance, before being sure it will burn down, or take a child to the doctor before being sure that their sickness is life threatening.
There is another problem that the risks are very much understated by the IPCC because of the influence of government delegations on the final reports. And governments don't like worried people, and they don't like spending money to ameliorate a problem that a later administration would have to deal with.
The loss of the northern summer sea ice was a dangerous tipping point that was one of the most looming dangers. The IPCC said that it may be gone by 2080.
Last year saw a drop by 23% more than the previous low. And then they said, Crikey, it might be gone by 2040.
And this year is melting faster than last, with scientist saying that it is about 50-50 that the pole be free of pack ice this summer.
If the second dangerous tipping point, the loss of the Greenland ice sheet collapses at a similar magnitude faster than predictions, then we will see a 7 metre sea level rise in our time, and it could be that action is already too late to stop this.
But we may save the West Antarctic Ice Sheet and the Boreal forest. Of course it will be harder without the northern summer sea ice and the Greenland ice sheet, because the large loss of albedo around the north pole must also be compensated for with further greenhouse gas reductions.