There is always such a thing as global climate change occuring. Sometimes it's more extreme than other times. We appear to be in a rather extreme period of climate change at present. The sun is also behaving in a rather unusual fashion, and the magnetic field of the planet Earth is declining quite noticeably, and the position of magnetic north is changing quite noticeably too. Could there be an overall connection between these various phenomena? Perhaps. If so, it is certainly not all caused by human activities, it couldn't be, but some of it (the changing climate) may be partially caused by human activities. After all, massive deforestation and heavy air pollution are quite likely to affect climate patterns wordwide.

The extremists and fanatics on either side...that is, the pro and anti-climate change zealots...will insist that either ALL of it is human-caused...or that NONE of it is. I think both sets of climate change fundamentalists are probably wrong in that respect. Such people usually are wrong, because their position is a faith-based one, not a reason-based one. It arises out of their emotions, and it has a specific emotional agenda...to identify and condemn someone else as being "evil". The "someone else", of course, is anyone who doesn't see it your way. In the eyes of a fanatic, he must therefore be either deeply stupid...or evil...or both.

And if so, well then, it's assumed to be okay to ridicule him, accuse him of all sorts of terrible motivations, show no respect for him, insult him, and so on.

And we see quite a bit of that at the two opposite extremes of the climate change debate, don't we? Quite a bit of it on this forum too.