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In the millions upon millions of years of the history of our planet, climate has fluctuated between extremes we cannot even begin to imagine. Asteroids, comets and volcanoes have wiped out large ecosystems, and in a few cases, altered the ecology of the entire globe.
Words like "crisis" and "catastrophe" have very limited application, and only with respect to some particular frame of reference. For example, the asteroid impact of 65 million years ago was clearly a catastrophe from the point of view of the dinosaurs, but was far from catastrophic for the mammals that followed. What is a crisis for the polar bear now might be a boon to several other species in the near future.
In the long run, earth, and the life forms upon it, adjust and adapt to whatever ecological "crisis" or "catastrophe" comes along. Whatever else we may accomplish, the human race will never destroy planet earth. Any crisis or catastrophe that might come about as a result of global warming, will be considered a "crisis", or "catastrophe" primarily from the viewpoint of the human race. From the viewpoint of the planet itself, and the global ecosystem as a whole, the extinction of the human race would be barely noticeable, and certainly not catastrophic.
Since the human race is sowing the seeds of its own destruction, the most likely outcome is for conditions favoring the demise human civilization to become even more pronounced. The only way the globe can become more hospitable to humans is if humans stop poisoning the planet. We know the planet itself will not die, so the only possible outcome is for the human race either to die outright, or the be reduced in number and capabilities to the extent that the few remaining humans are no longer able to go on damaging the biosphere. The alternative which sees humans suddenly changing their ways and becoming enlightened stewards of the planet are a pleasing fantasy, but given the political and intellectual realities (i.e., that humans are short-sighted and too poorly educated to make wise decisions), this outcome is so unlikely that it can be safely ignored.
The global warming "crisis", then, is not really a crisis at all, except from the narrow point of view of the human race, and doesn’t really need to be fixed, since the global ecosystem is self-correcting already. The offending infectious organism that is causing this fever, mankind, will be expelled from the ecosystem, or at least global antibodies will fight back the infection far enough that it is no longer strong enough to damage the earth as a whole. Then the earth as a whole will find a new balance, one less hospitable to the parasite called man, and balance and harmony will once again reign in nature.
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