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There been some great programming on this topic lately on Discovery. SOMETHING is happening out there, evidenced in particular in the areas of the North and South Pole. Life is changing there.
The cause? Certainly open to debate (sort of), but as a rule I always look for the most obvious answer, and that would be human influence. It's possible the Earth is gettting warmer from natural causes as well, but my money is on us, or a combination of the two. The risks are too high to bet against it.
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Hybrid Mode
