What's the difference if it's caused by man or not? The question is: What the fuk are we going to do about it?
Because, man-caused or not, man is royally SCREWED if we let global climate change follow its current course.
So if there are things man can do to shift the climate toward man's desired direction, he had better do so.
Of course, if there's anything man can do about shifting it, that in itself is evidence that man's already had a hand in shifting it so far. Whether man is going along with a trend-in-progress or not is hardly important. If our activities can "help" the climate, they can hurt it.
We'd better hope they can help it. (if you want to deny they have hurt it, enjoy your righteousness.)
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