Hayduke is right. Of course the climate varies naturally, no-one would dispute that. It's the rate of change that's the problem. For example, change that would have taken 1,000 years to occur naturally may now occur in 50-100 years because humans are speeding up the natural climatic variations. This gives us a lot less time to adapt to the changes, potentially leading to hardships for a great many people.
Personally I feel that there is very little that can be done about it. Human nature being what it is, not enough people will want to do anything about it until it's too late anyway. So we're pretty much along for the ride. If we're lucky, things won't turn out so bad and we'll mostly be alright. If we're unlucky then time to head for the bunkers and every man for himself!
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