The debate I was trying to establish is that they control the data collection and how it's presented. Most people think along similar lines, especially under peer pressure. This makes it easy to get the masses to think a certain way, even if it's false.
Apply Occam's Razor. Which makes more sense: that the vast majority of reputable scientists (often with competing interests) have reached the same conclusion (which is in no way beneficial to them personally beyond the joy of discovery, as it directly challenges aspects of our societal structure) based on the available data; or that the scientific community is somehow managing to cooperate to fabricate a massive consipiracy for... what, exactly?
Note that the idea that scientists do resarch purely out of their need to satisfy "joy of discovery" is extremaly naive. A scientist who wants to do some research, applies for a funding grant to the organisation responsiple for the distribution of research funds, and hopes that some anonymous commitee(at least it's anonymous around here) decides to accept the application. Else no money for you. It is in each applicant's interest to put forward a proposition that is likely to be accepted, since the funds are limited and the competition is strong.
The people opposing the man-made global warming "craze"(well, some of them at least), argue that the scientific hypothesis in question, despite being, like many other scientific hypotheses, a work in progress, has gained a political and/or cultural acceptance to a degree that direct opposition to it is automatically discarded in the same way that a direct opposition to Newton's Laws of Motion would. They argue that the acceptance is undeserved, and serves only to cloud and polarise the proper scientific discussion, creating the situation that we're in now, where you can either "know" that the man-made global warming is real or you're a nutjob, basically.
I'm a layman, with only cursory knowledge of the matter, and as such am only entitled to having opinions on the subject that are closer to educated guesses than facts. On the sliding scale of probability, personally I find MMGW quite convincing, yet I do think that had the discussion remained less tainted by social pressures and concerns, it'd have been closer to proper science than it is now.
edit: fixed tags