Having read a lot recently about the climate change (on which I'm a skeptic) it all comes down to one thing. Modelling. The current models predict X.
Which worked really well with the dataset you have, because it was built from that dataset. But when used to predict the future, it works ok now and again, but misses some significant fundamentals, with potentially catastrophic consequences.
However, as soon as you put your neck out to say this, you're called a denier, put in the same basket as every other nasty denier in history, and want to kill the planet for profit. Nobel prize laureates praising and reaping the benefits off their own research, haven't we been here before?