Nothing about science is settled - it's constantly evolving.I have a reasonably sensible scientific background (and bits of University paper to prove it come to that) in physical sciences and engineering and I've been able to apply more than a little bit of critical thinking to the "settled science", it's very far from settled, not forgetting that some of the gospel truth published works and graphs have been debunked comprehensively.
Is the climate changing? Yes. Has it always been subject to fluctuations? Damn right it has. Not that many thousands of years back the whole of the UK down as far South as Oxford was under miles of ice. Do I think mankind producing CO2 has made any real difference? Not even close to being convinced.
The one thing for sure, a lot of those of island nations are slowly drowning.