Why Climate Change Denial Is Like the O.J. Trial is an interesting article. The essence is that the climate denialists are using the same techniques as the OJ defense team: Find anything resembling a needle in a vast haystack of data, then claim that the presence of the needle casts doubt on the character of the haystack itself.
Because there is an overwhelming pile of evidence in support of anthropogenic global warming, there are bound to be occasional pieces of data that can appear to contradict the mass of affirmative information. The pile is overwhelming, especially to non-scientists. Therefore few have the patience to understand the whole thing.
Those who want to spin the counter argument claim that, because the two sides are both represented, therefore the issue is in doubt. And, as in the OJ trial, if there is cause for doubt then no action is to be taken.