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Here's another way to look at the situation:
It may be uncertain how much Global Warming has been caused by Man's activities (and this, of course, is the major argument people bring against Gore's statements). What is not in doubt, however, is the demonstrable results, which have already begun to eradicate farmable land, decimate foodstock from the land and seas, raise sea levels with the eventual result that billions of people will lose their homes, and damage the atmosphere to the point of losing needed UV protection.
We should continue to debate what caused it, or who's at fault... that knowledge will help us to slow or halt the process... but that's not what we need to be concentrating on right now. We need to be dedicating ourselves to reversing the process, using the tools we've developed by studying the problem, before this world cannot sustain the 6.5 billion people on it.
Or, we can do nothing, and let the planet deal with our overpopulation problem in its own way. As George Carlin once pointed out: "The planet is fine. It's the people that are f***ed!"
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