welcome to the world of academia?
what a pretentious self indulgent thing to say, but then again that is pretty much the world of academia, or those that see such a world.
and no it is not common accepted knowledge, nor is common accepted knowledge necessarily the truth. remember once common accepted knowledge was that the world was flat?
Michael chrichton summed it up perfectly
Historically, the claim of consensus has been the first refuge of scoundrels; it is a way to avoid debate by claiming that the matter is already settled. Whenever you hear the consensus of scientists agrees on something or other, reach for your wallet, because you're being had.
As for if climate change exists, well only the most ignorant argue if it exists. Fossil record show us that the earths climate has changed over time, the debate is how much man influences the rate. If you have conclusive proof on that I'd love to see it, as all ive seen so far is evidence suggesting it likely.
smoking and cancer, well i have seen studies as well as understand why it is so. Luckily for us these studies were made before big business took control of scientific studies that can influence their bottom line.
your claim is one i have never seen or heard, and if there is as much evidence proving such why are you so recalcitrant in producing it?
That is how things work ( or should) in the world of science, if you make a claim you produce the evidence to back up your claim. Im assuming that is different to world of academia, where it seems you make a claim and then try to make out you are better than any one that questions what you say?