First of all, science is never truly settled. It's constantly evolving to provide the most reasonable conclusions based on present information.  That's a good thing.

Second, there is an overwhelming amount of evidence supporting climate change. You can argue about how involved the government should get, what moral obligations we have to try to affect it, and other matters of opinion, but simply denying it is ignorant. It's intellectually dishonest to cherry pick one metric that appears to counter consensus, in the face of a mountain of evidence that concurs with the consensus, and conclude it's a hoax.