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Hi,
I am far more suspicious of industry funded "research" than I am of some scientific/UN cabal. The facts are the facts: 150 years ago -- before the beginning of the Industrial Revolution when we started burning coal and oil and gas -- was ~280ppm.
The best current estimates are that 350ppm is a threshold/tipping point that puts us into a self-accelerating cycle.
Now it is ~387ppm and rising fast -- so we are past that point already. The best case scenario is that we double the 280ppm; so 560ppm by 2100, and the worst case is we get to 560ppm by 2045.
That is a virtually instantaneous change (in geological terms) and it is the RAPIDITY of the change that makes it so ominous, and it is the best evidence we can have that we humans have caused it. If we had not also caused so much smog in the earlier part of this time, we would have had more rapid warming. Now that we have improved the particulate/opaque part of our pollution, we need to move to change the greenhouse gasses much more rapidly than we are.
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