For the record your honour, my position is not one of denial. I can understand the reason for your false assumption though ;-)
My position is thus: I accept that mankind has probably contributed in part to the temperature of your planet. However, my opinion, as a visitor to your planet, is that it doesn't matter in the general scheme of things. In other words, humans will either adapt to the change in temperature or they won't and another more adaptable species will come along and take your place. "Survival of the fittest" I believe one of your kind once called it.
That's what I mean by "this is pretty much how the planet has evolved over the last 12 million years or so"
So, to recap, there are three opinions up for discussion here:
(a) it's happening and it matters
(b) it's not happening
© it's happening but it doesn't matter in the general scheme of things
The sooner you humans accept you are part of nature and not external to nature the better IMHO.